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fix: append table stats (#4561)

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* fix: append table stats

* fix: clippy
This commit is contained in:
Lei, HUANG
2024-08-14 17:01:42 +08:00
committed by GitHub
parent 0f85037024
commit c1b1be47ba
3 changed files with 56 additions and 0 deletions
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1
src/table/src/table/scan.rs
View File

@@ -168,6 +168,7 @@ impl ExecutionPlan for RegionScanExec {
.iter()
.map(|_| ColumnStatistics {
distinct_count: Precision::Exact(self.total_rows),
null_count: Precision::Exact(0), // all null rows are counted for append-only table
..Default::default()
})
.collect();

34
tests/cases/distributed/explain/analyze_append_table_count.result Normal file
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@@ -0,0 +1,34 @@
CREATE TABLE IF NOT EXISTS `test_table` (
`bytes` BIGINT NULL,
`http_version` STRING NULL,
`ip` STRING NULL,
`method` STRING NULL,
`path` STRING NULL,
`status` SMALLINT UNSIGNED NULL,
`user` STRING NULL,
`timestamp` TIMESTAMP(3) NOT NULL,
TIME INDEX (`timestamp`),
PRIMARY KEY (`user`, `path`, `status`)
)
ENGINE=mito
WITH(
append_mode = 'true'
);
Affected Rows: 0
-- SQLNESS REPLACE (metrics.*) REDACTED
-- SQLNESS REPLACE (peers.*) REDACTED
EXPLAIN ANALYZE SELECT count(*) FROM test_table;
+-------+------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| stage | node | plan |
+-------+------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 0 | 0 | MergeScanExec: REDACTED
| | | |
| 1 | 0 | ProjectionExec: expr=[0 as COUNT(test_table.timestamp)] REDACTED
| | | common_recordbatch::adapter::MetricCollector REDACTED
| | | |
| | | Total rows: 1 |
+-------+------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

21
tests/cases/distributed/explain/analyze_append_table_count.sql Normal file
View File

@@ -0,0 +1,21 @@
CREATE TABLE IF NOT EXISTS `test_table` (
`bytes` BIGINT NULL,
`http_version` STRING NULL,
`ip` STRING NULL,
`method` STRING NULL,
`path` STRING NULL,
`status` SMALLINT UNSIGNED NULL,
`user` STRING NULL,
`timestamp` TIMESTAMP(3) NOT NULL,
TIME INDEX (`timestamp`),
PRIMARY KEY (`user`, `path`, `status`)
)
ENGINE=mito
WITH(
append_mode = 'true'
);
-- SQLNESS REPLACE (metrics.*) REDACTED
-- SQLNESS REPLACE (peers.*) REDACTED
EXPLAIN ANALYZE SELECT count(*) FROM test_table;