CANCEL ALTER

Description

This statement is used to undo an ALTER operation.

  1. 撤销 ALTER TABLE COLUMN 操作 Grammar: CANCEL ALTER TABLE COLUMN FROM db_name.table_name

  2. 撤销 ALTER TABLE ROLLUP 操作 Grammar: CANCEL ALTER TABLE ROLLUP FROM db_name.table_name

  3. OTHER CLUSTER Grammar: (To be realized…

example

[CANCEL ALTER TABLE COLUMN]

  1. 撤销针对 my_table 的 ALTER COLUMN 操作。 CANCEL ALTER TABLE COLUMN FROM example_db.my_table;

[CANCEL ALTER TABLE ROLLUP]

  1. 撤销 my_table 下的 ADD ROLLUP 操作。 CANCEL ALTER TABLE ROLLUP FROM example_db.my_table;

keyword

CANCEL,ALTER,TABLE,COLUMN,ROLLUP