soumyakanti3578 commented on code in PR #5196:
URL: https://github.com/apache/hive/pull/5196#discussion_r1940313899
##########
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/jdbc/JDBCExpandExpressionsRule.java:
##########
@@ -182,12 +191,75 @@ public RexNode visitCall(RexCall inputCall) {
switch (call.getKind()) {
case IN:
return transformIntoOrAndClause(rexBuilder, call);
+ case SEARCH:
+ return expandSearchAndRemoveRowOperator(rexBuilder, call);
default:
break;
}
}
return RexUtil.isFlat(node) ? node : RexUtil.flatten(rexBuilder, node);
}
+
+ private RexNode expandSearchAndRemoveRowOperator(RexBuilder rexBuilder,
RexCall expression) {
+ RexLiteral literal = (RexLiteral) expression.getOperands().get(1);
+ Sarg<?> sarg = Objects.requireNonNull(literal.getValueAs(Sarg.class),
"Sarg");
+
+ if (sarg.isPoints()) {
+ // if it is a row operator, we'll have
+ // SEARCH(ROW($1, $2), Sarg[[1, 2], [3, 4]]
Review Comment:
Just for clarification, `ROW` appears in calcite 1.25 too. Here's the same
partial predicate that 1.25 generates:
```
IN(ROW($1, $2), ROW(10:BIGINT, 1.515E1:DOUBLE), ROW(20:BIGINT,
2.525E1:DOUBLE))
```
and this is removed in `JDBCExpandExpressionsRule` here:
https://github.com/apache/hive/blob/84cdf6003678ed673d59d223ef7f4dac1aa6fdc0/ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/jdbc/JDBCExpandExpressionsRule.java#L192
with the help of `RexNodeConverter.transformInToOrOperands(List<RexNode>
operands, RexBuilder rexBuilder)`.
So, I have tried to convert `Sargs` to equivalent `ROW` operands before
passing it through the same method above.
Ideally, it would be better to do this in Calcite. At the least, Calcite
could return `SEARCH(ROW($1, $2), Sarg[ROW(a, b), ROW(c, d)])`, so that it's
easier to extract the ROWs from the Sarg.
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