suibianwanwank commented on code in PR #3897:
URL: https://github.com/apache/calcite/pull/3897#discussion_r1702978885
##########
core/src/main/java/org/apache/calcite/rel/rel2sql/SqlImplementor.java:
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@@ -726,6 +726,31 @@ public SqlNode toSql(@Nullable RexProgram program, RexNode
rex) {
}
}
elseNode = caseNodeList.get(caseNodeList.size() - 1);
+
+ if (caseCall.getType().getSqlTypeName() == SqlTypeName.BOOLEAN
Review Comment:
I wanted to design it this way at first, but I couldn't get the return type
of SqlCase in unparseCall, and this conversion has to ensure that the return
type is a boolean.
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