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DROP TABLE IF EXISTS t1,t2,t3; CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN>, c <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>; INSERT INTO t1 (a,b,c) VALUES (1,100,'a'),(2,200,'b'),(3,300,'c'); ALTER ONLINE TABLE t1 MODIFY b <INT_COLUMN> DEFAULT 5; ALTER ONLINE TABLE t1 CHANGE b new_name <INT_COLUMN>; ALTER ONLINE TABLE t1 COMMENT 'new comment'; ALTER ONLINE TABLE t1 RENAME TO t2; ERROR 0A000: LOCK=NONE/SHARED is not supported for this operation. Try LOCK=EXCLUSIVE. DROP TABLE IF EXISTS t2; Warnings: Note 1051 Unknown table 'test.t2' CREATE TEMPORARY TABLE t1 (a <INT_COLUMN>, b <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>; INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'c'); ALTER ONLINE TABLE t1 MODIFY b <INT_COLUMN> DEFAULT 5; Warnings: Warning 1366 Incorrect integer value: 'a' for column 'b' at row 1 Warning 1366 Incorrect integer value: 'b' for column 'b' at row 2 Warning 1366 Incorrect integer value: 'c' for column 'b' at row 3 ALTER ONLINE TABLE t1 CHANGE b new_name <INT_COLUMN>; ALTER ONLINE TABLE t1 COMMENT 'new comment'; ALTER ONLINE TABLE t1 RENAME TO t2; DROP TABLE IF EXISTS t1, t2; CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN>, c <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>; INSERT INTO t1 (a,b,c) VALUES (1,100,'a'),(2,200,'b'),(3,300,'c'); ALTER ONLINE TABLE t1 DROP COLUMN b, ADD b <INT_COLUMN>; ALTER ONLINE TABLE t1 MODIFY b BIGINT <CUSTOM_COL_OPTIONS>; ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type. Try LOCK=SHARED. ALTER ONLINE TABLE t1 ENGINE=MEMORY; ERROR 0A000: LOCK=NONE is not supported. Reason: COPY algorithm requires a lock. Try LOCK=SHARED. DROP TABLE t1; CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN>, c <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>; ALTER ONLINE TABLE t1 ADD INDEX (b); ALTER ONLINE TABLE t1 DROP INDEX b; DROP TABLE t1;