abhioncbr commented on code in PR #10739:
URL: https://github.com/apache/pinot/pull/10739#discussion_r1188695827
##########
pinot-common/src/test/java/org/apache/pinot/sql/parsers/CalciteSqlCompilerTest.java:
##########
@@ -3223,5 +3231,22 @@ public void testJoin() {
Assert.assertEquals(rightSubquery,
CalciteSqlParser.compileToPinotQuery("SELECT key, COUNT(*) AS b FROM
T3 JOIN T4 GROUP BY key"));
Assert.assertEquals(join.getCondition(),
CalciteSqlParser.compileToExpression("T1.key = T2.key"));
+
+ // test for self join queries
+ query = "SELECT T1.a FROM T1 JOIN(SELECT key FROM T1) as self ON
T1.key=self.key";
Review Comment:
As per the[ PG documentation
](https://www.postgresql.org/docs/current/sql-keywords-appendix.html), `self`
is a non-reserved keyword. There is no difference between `self` and `AS T2`.
The issue was because of alias(`AS`) usage, not with `self`
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