chore: support specifying skipping index in pipeline (#5635)

* chore: support setting skipping index in pipeline

* chore: fix typo key

* chore: add test

* chore: fix typo

src/common/grpc-expr/src/error.rs

@@ -111,9 +111,9 @@ pub enum Error {
     },
 
     #[snafu(display(
-        "Fulltext index only supports string type, column: {column_name}, unexpected type: {column_type:?}"
+        "Fulltext or Skipping index only supports string type, column: {column_name}, unexpected type: {column_type:?}"
     ))]
-    InvalidFulltextColumnType {
+    InvalidStringIndexColumnType {
         column_name: String,
         column_type: ColumnDataType,
         #[snafu(implicit)]
@@ -173,7 +173,7 @@ impl ErrorExt for Error {
                 StatusCode::InvalidArguments
             }
 
-            Error::UnknownColumnDataType { .. } | Error::InvalidFulltextColumnType { .. } => {
+            Error::UnknownColumnDataType { .. } | Error::InvalidStringIndexColumnType { .. } => {
                 StatusCode::InvalidArguments
             }
             Error::InvalidSetTableOptionRequest { .. }

src/common/grpc-expr/src/util.rs

@@ -15,7 +15,7 @@
 use std::collections::HashSet;
 
 use api::v1::column_data_type_extension::TypeExt;
-use api::v1::column_def::contains_fulltext;
+use api::v1::column_def::{contains_fulltext, contains_skipping};
 use api::v1::{
     AddColumn, AddColumns, Column, ColumnDataType, ColumnDataTypeExtension, ColumnDef,
     ColumnOptions, ColumnSchema, CreateTableExpr, JsonTypeExtension, SemanticType,
@@ -27,7 +27,7 @@ use table::table_reference::TableReference;
 
 use crate::error::{
     self, DuplicatedColumnNameSnafu, DuplicatedTimestampColumnSnafu,
-    InvalidFulltextColumnTypeSnafu, MissingTimestampColumnSnafu, Result,
+    InvalidStringIndexColumnTypeSnafu, MissingTimestampColumnSnafu, Result,
     UnknownColumnDataTypeSnafu,
 };
 pub struct ColumnExpr<'a> {
@@ -152,8 +152,9 @@ pub fn build_create_table_expr(
         let column_type = infer_column_datatype(datatype, datatype_extension)?;
 
         ensure!(
-            !contains_fulltext(options) || column_type == ColumnDataType::String,
-            InvalidFulltextColumnTypeSnafu {
+            (!contains_fulltext(options) && !contains_skipping(options))
+                || column_type == ColumnDataType::String,
+            InvalidStringIndexColumnTypeSnafu {
                 column_name,
                 column_type,
             }