Steve Carlin has uploaded a new patch set (#7). ( 
http://gerrit.cloudera.org:8080/23124 )

Change subject: IMPALA-14126: Calcite planner: Fixed issues with character types
......................................................................

IMPALA-14126: Calcite planner: Fixed issues with character types

There were a couple of issues with character types (char, varchar,
string) that needed fixing:

- count(varchar()) was not being cast correctly to string. The fix for this
is in CoerceNodes.areSqlTypesEqual which now makes sure varchar is not the
same sql type as string.

- case did not have a proper signature for varchar.  There is a weird quirk
in function resolving for case where it always returns the "case(boolean)"
signature. This seems like a more intrusive change to fix, so the Calcite
planner now uses the same boolean signature and changes the return type
in the Expr object, as done by the original planner.

- varchar to char casts are now handled correctly

Change-Id: I82d25bfec45cc287e7a510c23a99476d7c819e8f
---
M 
java/calcite-planner/src/main/java/org/apache/impala/calcite/coercenodes/CoerceNodes.java
M 
java/calcite-planner/src/main/java/org/apache/impala/calcite/coercenodes/CoerceOperandShuttle.java
M 
java/calcite-planner/src/main/java/org/apache/impala/calcite/functions/FunctionResolver.java
M 
java/calcite-planner/src/main/java/org/apache/impala/calcite/functions/RexCallConverter.java
M 
java/calcite-planner/src/main/java/org/apache/impala/calcite/type/ImpalaTypeConverter.java
M testdata/workloads/functional-query/queries/QueryTest/calcite.test
6 files changed, 163 insertions(+), 15 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/24/23124/7
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I82d25bfec45cc287e7a510c23a99476d7c819e8f
Gerrit-Change-Number: 23124
Gerrit-PatchSet: 7
Gerrit-Owner: Steve Carlin <[email protected]>

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