Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20999#discussion_r179934268
--- Diff:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4 ---
@@ -261,6 +261,14 @@ partitionVal
: identifier (EQ constant)?
;
+dropPartitionSpec
+ : PARTITION '(' dropPartitionVal (',' dropPartitionVal)* ')'
+ ;
+
+dropPartitionVal
+ : identifier (comparisonOperator constant)?
--- End diff --
It has to be in this format? `partCol1 > 2` How about `2 > partCol1`?
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