jcamachor commented on a change in pull request #812: Hive 22324
URL: https://github.com/apache/hive/pull/812#discussion_r337286757
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File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/jdbc/HiveJdbcImplementor.java
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@@ -109,7 +109,7 @@ public HiveJdbcImplementor(SqlDialect dialect,
JavaTypeFactory typeFactory) {
SqlNode sqlCondition = null;
SqlLiteral condType = JoinConditionType.ON.symbol(POS);
JoinType joinType = joinType(e.getJoinType());
- if (e.getJoinType() == JoinRelType.INNER &&
e.getCondition().isAlwaysTrue()) {
+ if ((e.getJoinType() == JoinRelType.INNER || e.isSemiJoin()) &&
e.getCondition().isAlwaysTrue()) {
Review comment:
Do we have any test that triggers this logic? Is this actually correct or
would it result in multiplying left input records? Logic seems to be slightly
different in method in `RelToSqlConverter` in upstream Calcite.
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