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SET @odl_sync_frm = @@global.sync_frm; Warnings: Warning 1287 '@@sync_frm' is deprecated and will be removed in a future release. SET @@global.sync_frm = OFF; Warnings: Warning 1287 '@@sync_frm' is deprecated and will be removed in a future release. DROP TABLE IF EXISTS t1,t2,t3; CREATE TABLE t1 ( a int(11) unsigned default NULL, b varchar(255) default NULL, UNIQUE KEY a (a), KEY b (b) ); INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3); CREATE TABLE t2 SELECT * FROM t1; CREATE TABLE t3 SELECT * FROM t1; # test altering of columns that multiupdate doesn't use # normal mode # PS mode # test altering of columns that multiupdate uses # normal mode # PS mode DROP TABLE t1, t2, t3; SET @@global.sync_frm = @odl_sync_frm; Warnings: Warning 1287 '@@sync_frm' is deprecated and will be removed in a future release.