241
241
CREATE TABLE t2 SELECT IFNULL(a, b) FROM t1;
243
243
Field Type Null Default Default_is_NULL On_Update
246
246
CREATE TABLE t2 SELECT IFNULL(a, NULL) FROM t1;
248
248
Field Type Null Default Default_is_NULL On_Update
251
251
CREATE TABLE t2 SELECT IFNULL(NULL, b) FROM t1;
253
253
Field Type Null Default Default_is_NULL On_Update