rdblue commented on a change in pull request #24723: [SPARK-27857][SQL] Move
ALTER TABLE parsing into Catalyst
URL: https://github.com/apache/spark/pull/24723#discussion_r290396441
##########
File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
##########
@@ -1244,6 +1269,7 @@ nonReserved
| TRANSFORM
| TRUE
| TRUNCATE
+ | TYPE
Review comment:
This is not an [ANSI reserved
keyword](http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc36271.1550/html/blocks/BEIJHIFE.htm),
but it is reserved in
[MySQL](https://dev.mysql.com/doc/refman/8.0/en/keywords.html),
[PostgreSQL](https://www.postgresql.org/docs/11/sql-keywords-appendix.html),
and
[DB2](https://www.ibm.com/support/knowledgecenter/en/SSEPEK_11.0.0/sqlref/src/tpc/db2z_reservedwords.html).
It is also on the list of [potential ANSI reserved
keywords](http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc36271.1550/html/blocks/BEIJCJHC.htm).
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