446c45bd87
This PR is to provide native parsing support for DDL commands: `Alter View`. Since its AST trees are highly similar to `Alter Table`. Thus, both implementation are integrated into the same one. Based on the Hive DDL document: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL and https://cwiki.apache.org/confluence/display/Hive/PartitionedViews **Syntax:** ```SQL ALTER VIEW view_name RENAME TO new_view_name ``` - to change the name of a view to a different name **Syntax:** ```SQL ALTER VIEW view_name SET TBLPROPERTIES ('comment' = new_comment); ``` - to add metadata to a view **Syntax:** ```SQL ALTER VIEW view_name UNSET TBLPROPERTIES [IF EXISTS] ('comment', 'key') ``` - to remove metadata from a view **Syntax:** ```SQL ALTER VIEW view_name ADD [IF NOT EXISTS] PARTITION spec1[, PARTITION spec2, ...] ``` - to add the partitioning metadata for a view. - the syntax of partition spec in `ALTER VIEW` is identical to `ALTER TABLE`, **EXCEPT** that it is **ILLEGAL** to specify a `LOCATION` clause. **Syntax:** ```SQL ALTER VIEW view_name DROP [IF EXISTS] PARTITION spec1[, PARTITION spec2, ...] ``` - to drop the related partition metadata for a view. Added the related test cases to `DDLCommandSuite` Author: gatorsmile <gatorsmile@gmail.com> Author: xiaoli <lixiao1983@gmail.com> Author: Xiao Li <xiaoli@Xiaos-MacBook-Pro.local> Closes #11987 from gatorsmile/parseAlterView. |
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