Aleksandr Efimov has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24268 )

Change subject: IMPALA-14910: Calcite planner: support expressions in limit 
clause
......................................................................


Patch Set 3:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/24268/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/rules/ImpalaSortSimplifyRule.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/rules/ImpalaSortSimplifyRule.java:

http://gerrit.cloudera.org:8080/#/c/24268/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/rules/ImpalaSortSimplifyRule.java@50
PS3, Line 50:     if (sort.fetch instanceof RexLiteral && sort.offset 
instanceof RexLiteral) {
> Done
Checked on PS5 - the early exit now covers the plain "limit 10" shape, and 
somethingChanged is used. Thanks.


http://gerrit.cloudera.org:8080/#/c/24268/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/service/ImpalaSqlValidatorImpl.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/service/ImpalaSqlValidatorImpl.java:

http://gerrit.cloudera.org:8080/#/c/24268/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/service/ImpalaSqlValidatorImpl.java@193
PS3, Line 193:       // Offset and limit expressions will always have a BIGINT 
type.
> Moved the logic into CoerceNodes. At that point, we can see if the RexLiter
CoerceNodes is a better place for it, and it answers the non-integer question 
too: "limit 1 + 0.5" reports "LIMIT expression must be an integer type" on PS5 
rather than silently truncating.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic01a0144671485156654e7685d0d5816fa743f9d
Gerrit-Change-Number: 24268
Gerrit-PatchSet: 3
Gerrit-Owner: Steve Carlin <[email protected]>
Gerrit-Reviewer: Aleksandr Efimov <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Tue, 25 Aug 2026 16:31:28 +0000
Gerrit-HasComments: Yes

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