mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-01-03 20:02:54 +00:00
feat: add information_schema.key_column_usage (#3057)
* feat: add information_schema.key_column_usage * fix: follow #3057 review comments * fix: add sql test for `key_column_usage` table * fix: fix spell typo * fix: resolve conflict in sql test result
This commit is contained in:
dimbtp
GitHub
@@ -13,6 +13,7 @@
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// limitations under the License.
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mod columns;
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mod key_column_usage;
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mod memory_table;
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mod schemata;
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mod table_names;
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@@ -41,6 +42,7 @@ pub use table_names::*;
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use self::columns::InformationSchemaColumns;
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use crate::error::Result;
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use crate::information_schema::key_column_usage::InformationSchemaKeyColumnUsage;
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use crate::information_schema::memory_table::{get_schema_columns, MemoryTable};
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use crate::information_schema::schemata::InformationSchemaSchemata;
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use crate::information_schema::tables::InformationSchemaTables;
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@@ -131,6 +133,10 @@ impl InformationSchemaProvider {
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tables.insert(TABLES.to_string(), self.build_table(TABLES).unwrap());
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tables.insert(SCHEMATA.to_string(), self.build_table(SCHEMATA).unwrap());
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tables.insert(COLUMNS.to_string(), self.build_table(COLUMNS).unwrap());
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tables.insert(
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KEY_COLUMN_USAGE.to_string(),
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self.build_table(KEY_COLUMN_USAGE).unwrap(),
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);
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// Add memory tables
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for name in MEMORY_TABLES.iter() {
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@@ -173,6 +179,10 @@ impl InformationSchemaProvider {
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CHECK_CONSTRAINTS => setup_memory_table!(CHECK_CONSTRAINTS),
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EVENTS => setup_memory_table!(EVENTS),
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FILES => setup_memory_table!(FILES),
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KEY_COLUMN_USAGE => Some(Arc::new(InformationSchemaKeyColumnUsage::new(
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self.catalog_name.clone(),
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self.catalog_manager.clone(),
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)) as _),
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SCHEMATA => Some(Arc::new(InformationSchemaSchemata::new(
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self.catalog_name.clone(),
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self.catalog_manager.clone(),
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338
src/catalog/src/information_schema/key_column_usage.rs
Normal file
338
src/catalog/src/information_schema/key_column_usage.rs
Normal file
@@ -0,0 +1,338 @@
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// Copyright 2023 Greptime Team
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use std::sync::{Arc, Weak};
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use arrow_schema::SchemaRef as ArrowSchemaRef;
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use common_catalog::consts::INFORMATION_SCHEMA_KEY_COLUMN_USAGE_TABLE_ID;
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use common_error::ext::BoxedError;
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use common_query::physical_plan::TaskContext;
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use common_recordbatch::adapter::RecordBatchStreamAdapter;
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use common_recordbatch::{RecordBatch, SendableRecordBatchStream};
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use datafusion::physical_plan::stream::RecordBatchStreamAdapter as DfRecordBatchStreamAdapter;
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use datafusion::physical_plan::streaming::PartitionStream as DfPartitionStream;
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use datafusion::physical_plan::SendableRecordBatchStream as DfSendableRecordBatchStream;
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use datatypes::prelude::{ConcreteDataType, ScalarVectorBuilder, VectorRef};
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use datatypes::schema::{ColumnSchema, Schema, SchemaRef};
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use datatypes::vectors::{StringVectorBuilder, UInt32VectorBuilder};
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use snafu::{OptionExt, ResultExt};
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use store_api::storage::TableId;
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use super::KEY_COLUMN_USAGE;
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use crate::error::{
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CreateRecordBatchSnafu, InternalSnafu, Result, UpgradeWeakCatalogManagerRefSnafu,
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};
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use crate::information_schema::InformationTable;
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use crate::CatalogManager;
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/// The virtual table implementation for `information_schema.KEY_COLUMN_USAGE`.
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pub(super) struct InformationSchemaKeyColumnUsage {
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schema: SchemaRef,
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catalog_name: String,
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catalog_manager: Weak<dyn CatalogManager>,
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}
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impl InformationSchemaKeyColumnUsage {
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pub(super) fn new(catalog_name: String, catalog_manager: Weak<dyn CatalogManager>) -> Self {
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Self {
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schema: Self::schema(),
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catalog_name,
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catalog_manager,
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}
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}
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pub(crate) fn schema() -> SchemaRef {
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Arc::new(Schema::new(vec![
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ColumnSchema::new(
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"constraint_catalog",
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ConcreteDataType::string_datatype(),
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false,
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),
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ColumnSchema::new(
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"constraint_schema",
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ConcreteDataType::string_datatype(),
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false,
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),
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ColumnSchema::new(
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"constraint_name",
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ConcreteDataType::string_datatype(),
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false,
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),
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ColumnSchema::new("table_catalog", ConcreteDataType::string_datatype(), false),
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ColumnSchema::new("table_schema", ConcreteDataType::string_datatype(), false),
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ColumnSchema::new("table_name", ConcreteDataType::string_datatype(), false),
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ColumnSchema::new("column_name", ConcreteDataType::string_datatype(), false),
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ColumnSchema::new(
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"ordinal_position",
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ConcreteDataType::uint32_datatype(),
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false,
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),
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ColumnSchema::new(
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"position_in_unique_constraint",
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ConcreteDataType::uint32_datatype(),
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true,
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),
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ColumnSchema::new(
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"referenced_table_schema",
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ConcreteDataType::string_datatype(),
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true,
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),
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ColumnSchema::new(
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"referenced_table_name",
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ConcreteDataType::string_datatype(),
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true,
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),
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ColumnSchema::new(
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"referenced_column_name",
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ConcreteDataType::string_datatype(),
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true,
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),
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]))
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}
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fn builder(&self) -> InformationSchemaKeyColumnUsageBuilder {
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InformationSchemaKeyColumnUsageBuilder::new(
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self.schema.clone(),
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self.catalog_name.clone(),
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self.catalog_manager.clone(),
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)
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}
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}
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impl InformationTable for InformationSchemaKeyColumnUsage {
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fn table_id(&self) -> TableId {
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INFORMATION_SCHEMA_KEY_COLUMN_USAGE_TABLE_ID
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}
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fn table_name(&self) -> &'static str {
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KEY_COLUMN_USAGE
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}
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fn schema(&self) -> SchemaRef {
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self.schema.clone()
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}
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fn to_stream(&self) -> Result<SendableRecordBatchStream> {
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let schema = self.schema.arrow_schema().clone();
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let mut builder = self.builder();
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let stream = Box::pin(DfRecordBatchStreamAdapter::new(
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schema,
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futures::stream::once(async move {
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builder
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.make_key_column_usage()
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.await
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.map(|x| x.into_df_record_batch())
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.map_err(Into::into)
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}),
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));
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Ok(Box::pin(
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RecordBatchStreamAdapter::try_new(stream)
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.map_err(BoxedError::new)
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.context(InternalSnafu)?,
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))
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}
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}
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/// Builds the `information_schema.KEY_COLUMN_USAGE` table row by row
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///
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/// Columns are based on <https://dev.mysql.com/doc/refman/8.2/en/information-schema-key-column-usage-table.html>
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struct InformationSchemaKeyColumnUsageBuilder {
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schema: SchemaRef,
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catalog_name: String,
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catalog_manager: Weak<dyn CatalogManager>,
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constraint_catalog: StringVectorBuilder,
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constraint_schema: StringVectorBuilder,
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constraint_name: StringVectorBuilder,
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table_catalog: StringVectorBuilder,
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table_schema: StringVectorBuilder,
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table_name: StringVectorBuilder,
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column_name: StringVectorBuilder,
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ordinal_position: UInt32VectorBuilder,
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position_in_unique_constraint: UInt32VectorBuilder,
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referenced_table_schema: StringVectorBuilder,
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referenced_table_name: StringVectorBuilder,
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referenced_column_name: StringVectorBuilder,
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}
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impl InformationSchemaKeyColumnUsageBuilder {
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fn new(
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schema: SchemaRef,
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catalog_name: String,
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catalog_manager: Weak<dyn CatalogManager>,
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) -> Self {
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Self {
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schema,
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catalog_name,
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catalog_manager,
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constraint_catalog: StringVectorBuilder::with_capacity(42),
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constraint_schema: StringVectorBuilder::with_capacity(42),
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constraint_name: StringVectorBuilder::with_capacity(42),
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table_catalog: StringVectorBuilder::with_capacity(42),
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table_schema: StringVectorBuilder::with_capacity(42),
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table_name: StringVectorBuilder::with_capacity(42),
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column_name: StringVectorBuilder::with_capacity(42),
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ordinal_position: UInt32VectorBuilder::with_capacity(42),
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position_in_unique_constraint: UInt32VectorBuilder::with_capacity(42),
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referenced_table_schema: StringVectorBuilder::with_capacity(42),
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referenced_table_name: StringVectorBuilder::with_capacity(42),
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referenced_column_name: StringVectorBuilder::with_capacity(42),
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}
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}
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/// Construct the `information_schema.KEY_COLUMN_USAGE` virtual table
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async fn make_key_column_usage(&mut self) -> Result<RecordBatch> {
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let catalog_name = self.catalog_name.clone();
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let catalog_manager = self
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.catalog_manager
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.upgrade()
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.context(UpgradeWeakCatalogManagerRefSnafu)?;
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let mut time_index_constraints = vec![];
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let mut primary_constraints = vec![];
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for schema_name in catalog_manager.schema_names(&catalog_name).await? {
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if !catalog_manager
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.schema_exists(&catalog_name, &schema_name)
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.await?
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{
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continue;
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}
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for table_name in catalog_manager
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.table_names(&catalog_name, &schema_name)
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.await?
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{
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if let Some(table) = catalog_manager
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.table(&catalog_name, &schema_name, &table_name)
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.await?
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{
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let keys = &table.table_info().meta.primary_key_indices;
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let schema = table.schema();
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for (idx, column) in schema.column_schemas().iter().enumerate() {
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if column.is_time_index() {
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time_index_constraints.push((
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schema_name.clone(),
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table_name.clone(),
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column.name.clone(),
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));
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}
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if keys.contains(&idx) {
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primary_constraints.push((
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schema_name.clone(),
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table_name.clone(),
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column.name.clone(),
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));
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}
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// TODO(dimbtp): foreign key constraint not supported yet
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}
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} else {
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unreachable!();
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}
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}
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}
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for (i, (schema_name, table_name, column_name)) in
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time_index_constraints.into_iter().enumerate()
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{
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self.add_key_column_usage(
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&schema_name,
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"TIME INDEX",
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&schema_name,
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&table_name,
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&column_name,
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i as u32 + 1,
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);
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}
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for (i, (schema_name, table_name, column_name)) in
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primary_constraints.into_iter().enumerate()
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{
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self.add_key_column_usage(
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&schema_name,
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"PRIMARY",
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&schema_name,
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&table_name,
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&column_name,
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i as u32 + 1,
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);
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}
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self.finish()
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}
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// TODO(dimbtp): Foreign key constraint has not `None` value for last 4
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// fields, but it is not supported yet.
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fn add_key_column_usage(
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&mut self,
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constraint_schema: &str,
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constraint_name: &str,
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table_schema: &str,
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table_name: &str,
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column_name: &str,
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ordinal_position: u32,
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) {
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self.constraint_catalog.push(Some("def"));
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self.constraint_schema.push(Some(constraint_schema));
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self.constraint_name.push(Some(constraint_name));
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self.table_catalog.push(Some("def"));
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self.table_schema.push(Some(table_schema));
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self.table_name.push(Some(table_name));
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self.column_name.push(Some(column_name));
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self.ordinal_position.push(Some(ordinal_position));
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self.position_in_unique_constraint.push(None);
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self.referenced_table_schema.push(None);
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self.referenced_table_name.push(None);
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self.referenced_column_name.push(None);
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}
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fn finish(&mut self) -> Result<RecordBatch> {
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let columns: Vec<VectorRef> = vec![
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Arc::new(self.constraint_catalog.finish()),
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Arc::new(self.constraint_schema.finish()),
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Arc::new(self.constraint_name.finish()),
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Arc::new(self.table_catalog.finish()),
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Arc::new(self.table_schema.finish()),
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Arc::new(self.table_name.finish()),
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Arc::new(self.column_name.finish()),
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Arc::new(self.ordinal_position.finish()),
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Arc::new(self.position_in_unique_constraint.finish()),
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Arc::new(self.referenced_table_schema.finish()),
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Arc::new(self.referenced_table_name.finish()),
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Arc::new(self.referenced_column_name.finish()),
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];
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RecordBatch::new(self.schema.clone(), columns).context(CreateRecordBatchSnafu)
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}
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}
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impl DfPartitionStream for InformationSchemaKeyColumnUsage {
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fn schema(&self) -> &ArrowSchemaRef {
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self.schema.arrow_schema()
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}
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fn execute(&self, _: Arc<TaskContext>) -> DfSendableRecordBatchStream {
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let schema = self.schema.arrow_schema().clone();
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let mut builder = self.builder();
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Box::pin(DfRecordBatchStreamAdapter::new(
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schema,
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futures::stream::once(async move {
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builder
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.make_key_column_usage()
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.await
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.map(|x| x.into_df_record_batch())
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.map_err(Into::into)
|
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}),
|
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))
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}
|
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}
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@@ -25,5 +25,6 @@ pub const COLLATIONS: &str = "collations";
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pub const COLLATION_CHARACTER_SET_APPLICABILITY: &str = "collation_character_set_applicability";
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pub const CHECK_CONSTRAINTS: &str = "check_constraints";
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pub const EVENTS: &str = "events";
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pub const KEY_COLUMN_USAGE: &str = "key_column_usage";
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pub const FILES: &str = "files";
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pub const SCHEMATA: &str = "schemata";
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@@ -58,6 +58,8 @@ pub const INFORMATION_SCHEMA_EVENTS_TABLE_ID: u32 = 13;
|
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pub const INFORMATION_SCHEMA_FILES_TABLE_ID: u32 = 14;
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/// id for information_schema.SCHEMATA
|
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pub const INFORMATION_SCHEMA_SCHEMATA_TABLE_ID: u32 = 15;
|
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/// id for information_schema.KEY_COLUMN_USAGE
|
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pub const INFORMATION_SCHEMA_KEY_COLUMN_USAGE_TABLE_ID: u32 = 16;
|
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/// ----- End of information_schema tables -----
|
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|
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pub const MITO_ENGINE: &str = "mito";
|
||||
|
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@@ -31,6 +31,7 @@ show tables;
|
||||
| engines |
|
||||
| events |
|
||||
| files |
|
||||
| key_column_usage |
|
||||
| schemata |
|
||||
| tables |
|
||||
+---------------------------------------+
|
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|
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@@ -23,6 +23,7 @@ order by table_schema, table_name;
|
||||
| greptime | information_schema | engines | LOCAL TEMPORARY | 5 | |
|
||||
| greptime | information_schema | events | LOCAL TEMPORARY | 13 | |
|
||||
| greptime | information_schema | files | LOCAL TEMPORARY | 14 | |
|
||||
| greptime | information_schema | key_column_usage | LOCAL TEMPORARY | 16 | |
|
||||
| greptime | information_schema | schemata | LOCAL TEMPORARY | 15 | |
|
||||
| greptime | information_schema | tables | LOCAL TEMPORARY | 3 | |
|
||||
| greptime | public | numbers | LOCAL TEMPORARY | 2 | test_engine |
|
||||
@@ -30,132 +31,144 @@ order by table_schema, table_name;
|
||||
|
||||
select * from information_schema.columns order by table_schema, table_name;
|
||||
|
||||
+---------------+--------------------+---------------------------------------+----------------------------+-----------+---------------+----------------+-------------+-------------+----------------+
|
||||
| table_catalog | table_schema | table_name | column_name | data_type | semantic_type | column_default | is_nullable | column_type | column_comment |
|
||||
+---------------+--------------------+---------------------------------------+----------------------------+-----------+---------------+----------------+-------------+-------------+----------------+
|
||||
| greptime | information_schema | build_info | git_branch | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | git_commit | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | git_commit_short | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | git_dirty | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | pkg_version | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | default_collate_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | maxlen | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | character_sets | description | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | check_clause | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | constraint_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | constraint_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | constraint_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collation_character_set_applicability | character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collation_character_set_applicability | collation_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | collation_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | sortlen | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | collations | character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | id | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | collations | is_default | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | is_compiled | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | grantee | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | privilege_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | is_grantable | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | histogram | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | schema_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_comment | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | columns | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | is_nullable | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_default | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | columns | semantic_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | data_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | savepoints | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | xa | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | transactions | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | comment | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | support | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | engine | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_definition | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | last_executed | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | database_collation | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | collation_connection | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | character_set_client | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | originator | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | events | event_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | definer | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | time_zone | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_body | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_comment | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | execute_at | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | interval_value | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | events | interval_field | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | sql_mode | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | starts | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | ends | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | status | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | on_completion | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | created | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | last_altered | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | logfile_group_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | data_free | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | extra | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | status | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | checksum | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | check_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | file_id | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | file_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | file_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | tablespace_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | update_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | logfile_group_number | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | engine | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | fulltext_keys | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | deleted_rows | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | update_count | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | free_extents | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | total_extents | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | extent_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | initial_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | maximum_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | autoextend_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | creation_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | last_update_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | last_access_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | recover_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | transaction_counter | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | version | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | row_format | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_rows | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | avg_row_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | data_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | max_data_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | index_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | create_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | schemata | catalog_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | schema_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | default_character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | default_collation_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | sql_path | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | tables | engine | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | tables | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_id | UInt32 | FIELD | | Yes | UInt32 | |
|
||||
| greptime | information_schema | tables | table_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | public | numbers | number | UInt32 | TAG | | No | UInt32 | |
|
||||
+---------------+--------------------+---------------------------------------+----------------------------+-----------+---------------+----------------+-------------+-------------+----------------+
|
||||
+---------------+--------------------+---------------------------------------+-------------------------------+-----------+---------------+----------------+-------------+-------------+----------------+
|
||||
| table_catalog | table_schema | table_name | column_name | data_type | semantic_type | column_default | is_nullable | column_type | column_comment |
|
||||
+---------------+--------------------+---------------------------------------+-------------------------------+-----------+---------------+----------------+-------------+-------------+----------------+
|
||||
| greptime | information_schema | build_info | git_branch | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | git_commit | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | git_commit_short | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | git_dirty | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | build_info | pkg_version | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | description | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | default_collate_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | character_sets | maxlen | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | check_constraints | check_clause | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | constraint_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | constraint_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | check_constraints | constraint_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collation_character_set_applicability | character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collation_character_set_applicability | collation_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | collation_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | id | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | collations | is_default | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | is_compiled | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | collations | sortlen | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | column_privileges | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | grantee | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | privilege_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_privileges | is_grantable | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | histogram | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | schema_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | column_statistics | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_comment | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | columns | is_nullable | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_default | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | columns | semantic_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | data_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | columns | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | xa | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | transactions | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | comment | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | support | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | engine | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | engines | savepoints | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | starts | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | event_comment | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | database_collation | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | collation_connection | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | character_set_client | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | originator | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | events | event_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | definer | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | time_zone | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_body | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_definition | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | event_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | execute_at | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | interval_value | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | events | interval_field | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | sql_mode | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | ends | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | status | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | on_completion | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | events | created | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | last_altered | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | events | last_executed | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | free_extents | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | row_format | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | extra | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | status | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | checksum | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | check_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | file_id | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | file_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | file_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | tablespace_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | logfile_group_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | logfile_group_number | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | engine | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | fulltext_keys | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | deleted_rows | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | update_count | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | update_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | total_extents | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | extent_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | initial_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | maximum_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | autoextend_size | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | creation_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | last_update_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | last_access_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | recover_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | transaction_counter | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | version | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | files | create_time | DateTime | FIELD | | No | DateTime | |
|
||||
| greptime | information_schema | files | table_rows | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | avg_row_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | data_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | max_data_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | index_length | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | files | data_free | Int64 | FIELD | | No | Int64 | |
|
||||
| greptime | information_schema | key_column_usage | ordinal_position | UInt32 | FIELD | | No | UInt32 | |
|
||||
| greptime | information_schema | key_column_usage | constraint_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | key_column_usage | referenced_column_name | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | key_column_usage | referenced_table_name | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | key_column_usage | referenced_table_schema | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | key_column_usage | position_in_unique_constraint | UInt32 | FIELD | | Yes | UInt32 | |
|
||||
| greptime | information_schema | key_column_usage | constraint_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | key_column_usage | column_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | key_column_usage | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | key_column_usage | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | key_column_usage | constraint_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | key_column_usage | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | catalog_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | default_collation_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | default_character_set_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | schemata | sql_path | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | schemata | schema_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_schema | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_catalog | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | engine | String | FIELD | | Yes | String | |
|
||||
| greptime | information_schema | tables | table_name | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_type | String | FIELD | | No | String | |
|
||||
| greptime | information_schema | tables | table_id | UInt32 | FIELD | | Yes | UInt32 | |
|
||||
| greptime | public | numbers | number | UInt32 | TAG | | No | UInt32 | |
|
||||
+---------------+--------------------+---------------------------------------+-------------------------------+-----------+---------------+----------------+-------------+-------------+----------------+
|
||||
|
||||
create
|
||||
database my_db;
|
||||
@@ -277,6 +290,34 @@ select count(*) from build_info;
|
||||
| 1 |
|
||||
+----------+
|
||||
|
||||
desc table key_column_usage;
|
||||
|
||||
+-------------------------------+--------+-----+------+---------+---------------+
|
||||
| Column | Type | Key | Null | Default | Semantic Type |
|
||||
+-------------------------------+--------+-----+------+---------+---------------+
|
||||
| constraint_catalog | String | | NO | | FIELD |
|
||||
| constraint_schema | String | | NO | | FIELD |
|
||||
| constraint_name | String | | NO | | FIELD |
|
||||
| table_catalog | String | | NO | | FIELD |
|
||||
| table_schema | String | | NO | | FIELD |
|
||||
| table_name | String | | NO | | FIELD |
|
||||
| column_name | String | | NO | | FIELD |
|
||||
| ordinal_position | UInt32 | | NO | | FIELD |
|
||||
| position_in_unique_constraint | UInt32 | | YES | | FIELD |
|
||||
| referenced_table_schema | String | | YES | | FIELD |
|
||||
| referenced_table_name | String | | YES | | FIELD |
|
||||
| referenced_column_name | String | | YES | | FIELD |
|
||||
+-------------------------------+--------+-----+------+---------+---------------+
|
||||
|
||||
select * from key_column_usage;
|
||||
|
||||
+--------------------+-------------------+-----------------+---------------+--------------+------------+-------------+------------------+-------------------------------+-------------------------+-----------------------+------------------------+
|
||||
| constraint_catalog | constraint_schema | constraint_name | table_catalog | table_schema | table_name | column_name | ordinal_position | position_in_unique_constraint | referenced_table_schema | referenced_table_name | referenced_column_name |
|
||||
+--------------------+-------------------+-----------------+---------------+--------------+------------+-------------+------------------+-------------------------------+-------------------------+-----------------------+------------------------+
|
||||
| def | my_db | TIME INDEX | def | my_db | foo | ts | 1 | | | | |
|
||||
| def | public | PRIMARY | def | public | numbers | number | 1 | | | | |
|
||||
+--------------------+-------------------+-----------------+---------------+--------------+------------+-------------+------------------+-------------------------------+-------------------------+-----------------------+------------------------+
|
||||
|
||||
-- tables not implemented
|
||||
desc table COLUMN_PRIVILEGES;
|
||||
|
||||
|
||||
@@ -57,6 +57,10 @@ desc table build_info;
|
||||
|
||||
select count(*) from build_info;
|
||||
|
||||
desc table key_column_usage;
|
||||
|
||||
select * from key_column_usage;
|
||||
|
||||
-- tables not implemented
|
||||
desc table COLUMN_PRIVILEGES;
|
||||
|
||||
|
||||
Reference in New Issue
Block a user