Thomas Tauber-Marshall has uploaded a new patch set (#4). Change subject: IMPALA-1861: Simplify conditionals with constant conditions ......................................................................
IMPALA-1861: Simplify conditionals with constant conditions When there are conditionals with constant values of TRUE or FALSE we can simplify them during analysis using the ExprRewriter. This patch introduces the SimplifyConditionalsRule with covers IF, OR, AND, CASE, and DECODE. It also introduces NormalizeExprsRule which normalizes AND and OR such that if either child is a BoolLiteral, then the left child is a BoolLiteral. Testing: - Added unit tests to ExprRewriteRulesTest. - Ran FE planner tests and BE expr-test. Change-Id: Id70aaf9fd99f64bd98175b7e2dbba28f350e7d3b --- M fe/src/main/java/org/apache/impala/analysis/AnalysisContext.java M fe/src/main/java/org/apache/impala/analysis/CaseWhenClause.java A fe/src/main/java/org/apache/impala/rewrite/NormalizeExprsRule.java A fe/src/main/java/org/apache/impala/rewrite/SimplifyConditionalsRule.java M fe/src/test/java/org/apache/impala/analysis/ExprRewriteRulesTest.java 5 files changed, 367 insertions(+), 12 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/85/5585/4 -- To view, visit http://gerrit.cloudera.org:8080/5585 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: Id70aaf9fd99f64bd98175b7e2dbba28f350e7d3b Gerrit-PatchSet: 4 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Thomas Tauber-Marshall <[email protected]> Gerrit-Reviewer: Alex Behm <[email protected]> Gerrit-Reviewer: Marcel Kornacker <[email protected]> Gerrit-Reviewer: Thomas Tauber-Marshall <[email protected]>
