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new 14f2bae208c [SPARK-37527][SQL][FOLLOWUP] Cannot compile COVAR_POP,
COVAR_SAMP and CORR in `H2Dialect` if them with `DISTINCT`
14f2bae208c is described below
commit 14f2bae208c093dea58e3f947fb660e8345fb256
Author: Jiaan Geng <belie...@163.com>
AuthorDate: Thu Jul 7 09:55:45 2022 +0800
[SPARK-37527][SQL][FOLLOWUP] Cannot compile COVAR_POP, COVAR_SAMP and CORR
in `H2Dialect` if them with `DISTINCT`
### What changes were proposed in this pull request?
https://github.com/apache/spark/pull/35145 compile COVAR_POP, COVAR_SAMP
and CORR in H2Dialect.
Because H2 does't support COVAR_POP, COVAR_SAMP and CORR works with
DISTINCT.
So https://github.com/apache/spark/pull/35145 introduces a bug that compile
COVAR_POP, COVAR_SAMP and CORR if these aggregate functions with DISTINCT.
### Why are the changes needed?
Fix bug that compile COVAR_POP, COVAR_SAMP and CORR if these aggregate
functions with DISTINCT.
### Does this PR introduce _any_ user-facing change?
'Yes'.
Bug will be fix.
### How was this patch tested?
New test cases.
Closes #37090 from beliefer/SPARK-37527_followup2.
Authored-by: Jiaan Geng <belie...@163.com>
Signed-off-by: Wenchen Fan <wenc...@databricks.com>
---
.../org/apache/spark/sql/jdbc/H2Dialect.scala | 15 ++++------
.../org/apache/spark/sql/jdbc/JDBCV2Suite.scala | 34 +++++++++++++++-------
2 files changed, 30 insertions(+), 19 deletions(-)
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
b/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
index 124cb001b5c..5dfc64d7b6c 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
@@ -62,18 +62,15 @@ private[sql] object H2Dialect extends JdbcDialect {
assert(f.children().length == 1)
val distinct = if (f.isDistinct) "DISTINCT " else ""
Some(s"STDDEV_SAMP($distinct${f.children().head})")
- case f: GeneralAggregateFunc if f.name() == "COVAR_POP" =>
+ case f: GeneralAggregateFunc if f.name() == "COVAR_POP" &&
!f.isDistinct =>
assert(f.children().length == 2)
- val distinct = if (f.isDistinct) "DISTINCT " else ""
- Some(s"COVAR_POP($distinct${f.children().head},
${f.children().last})")
- case f: GeneralAggregateFunc if f.name() == "COVAR_SAMP" =>
+ Some(s"COVAR_POP(${f.children().head}, ${f.children().last})")
+ case f: GeneralAggregateFunc if f.name() == "COVAR_SAMP" &&
!f.isDistinct =>
assert(f.children().length == 2)
- val distinct = if (f.isDistinct) "DISTINCT " else ""
- Some(s"COVAR_SAMP($distinct${f.children().head},
${f.children().last})")
- case f: GeneralAggregateFunc if f.name() == "CORR" =>
+ Some(s"COVAR_SAMP(${f.children().head}, ${f.children().last})")
+ case f: GeneralAggregateFunc if f.name() == "CORR" && !f.isDistinct =>
assert(f.children().length == 2)
- val distinct = if (f.isDistinct) "DISTINCT " else ""
- Some(s"CORR($distinct${f.children().head}, ${f.children().last})")
+ Some(s"CORR(${f.children().head}, ${f.children().last})")
case _ => None
}
)
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
index 108348fbcd3..0a713bdb76c 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
@@ -1652,23 +1652,37 @@ class JDBCV2Suite extends QueryTest with
SharedSparkSession with ExplainSuiteHel
}
test("scan with aggregate push-down: COVAR_POP COVAR_SAMP with filter and
group by") {
- val df = sql("SELECT COVAR_POP(bonus, bonus), COVAR_SAMP(bonus, bonus)" +
+ val df1 = sql("SELECT COVAR_POP(bonus, bonus), COVAR_SAMP(bonus, bonus)" +
" FROM h2.test.employee WHERE dept > 0 GROUP BY DePt")
- checkFiltersRemoved(df)
- checkAggregateRemoved(df)
- checkPushedInfo(df, "PushedAggregates: [COVAR_POP(BONUS, BONUS),
COVAR_SAMP(BONUS, BONUS)], " +
+ checkFiltersRemoved(df1)
+ checkAggregateRemoved(df1)
+ checkPushedInfo(df1, "PushedAggregates: [COVAR_POP(BONUS, BONUS),
COVAR_SAMP(BONUS, BONUS)], " +
"PushedFilters: [DEPT IS NOT NULL, DEPT > 0], PushedGroupByExpressions:
[DEPT]")
- checkAnswer(df, Seq(Row(10000d, 20000d), Row(2500d, 5000d), Row(0d, null)))
+ checkAnswer(df1, Seq(Row(10000d, 20000d), Row(2500d, 5000d), Row(0d,
null)))
+
+ val df2 = sql("SELECT COVAR_POP(DISTINCT bonus, bonus),
COVAR_SAMP(DISTINCT bonus, bonus)" +
+ " FROM h2.test.employee WHERE dept > 0 GROUP BY DePt")
+ checkFiltersRemoved(df2)
+ checkAggregateRemoved(df2, false)
+ checkPushedInfo(df2, "PushedFilters: [DEPT IS NOT NULL, DEPT > 0]")
+ checkAnswer(df2, Seq(Row(10000d, 20000d), Row(2500d, 5000d), Row(0d,
null)))
}
test("scan with aggregate push-down: CORR with filter and group by") {
- val df = sql("SELECT CORR(bonus, bonus) FROM h2.test.employee WHERE dept >
0" +
+ val df1 = sql("SELECT CORR(bonus, bonus) FROM h2.test.employee WHERE dept
> 0" +
" GROUP BY DePt")
- checkFiltersRemoved(df)
- checkAggregateRemoved(df)
- checkPushedInfo(df, "PushedAggregates: [CORR(BONUS, BONUS)], " +
+ checkFiltersRemoved(df1)
+ checkAggregateRemoved(df1)
+ checkPushedInfo(df1, "PushedAggregates: [CORR(BONUS, BONUS)], " +
"PushedFilters: [DEPT IS NOT NULL, DEPT > 0], PushedGroupByExpressions:
[DEPT]")
- checkAnswer(df, Seq(Row(1d), Row(1d), Row(null)))
+ checkAnswer(df1, Seq(Row(1d), Row(1d), Row(null)))
+
+ val df2 = sql("SELECT CORR(DISTINCT bonus, bonus) FROM h2.test.employee
WHERE dept > 0" +
+ " GROUP BY DePt")
+ checkFiltersRemoved(df2)
+ checkAggregateRemoved(df2, false)
+ checkPushedInfo(df2, "PushedFilters: [DEPT IS NOT NULL, DEPT > 0]")
+ checkAnswer(df2, Seq(Row(1d), Row(1d), Row(null)))
}
test("scan with aggregate push-down: aggregate over alias push down") {
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