mysql 部类

CREATE TABLE db_set (    set1 SET('x', 'y', 'z') NOT NULL,    enum1 ENUM('one', 'two', 'three') NOT NULL);truncate table db_set;insert into db_set values(1,1); -- 'x', 'one'insert into db_set values(2,2); -- 'y', 'two'insert into db_set values(3,3); -- 'x,y', 'three'insert into db_set values(3,1); -- 'x,y', 'one'insert into db_set values(4,1); -- 'z', 'one'insert into db_set values(5,1); -- 'x,z', 'one'insert into db_set values(6,1); -- 'y,z', 'one'insert into db_set values(7,1); -- 'x,y,z', 'one'insert into db_set values(8,1); -- 	 -- one	insert into db_set values(9,1); -- 'x', 'one'insert into db_set values(10,1); -- 'y', 'one'select * from db_set;truncate table db_set;CREATE TABLE db_set2 (    set1 SET('a', 'b', 'c','d') NOT NULL    ); -- a=1,b=2,c=4,d=8truncate table db_set2;insert into db_set2 values(1); -- ainsert into db_set2 values(2); -- binsert into db_set2 values(3); -- a,binsert into db_set2 values(4); -- cinsert into db_set2 values(5); -- a,cinsert into db_set2 values(6); -- b,cinsert into db_set2 values(7); -- a,b,cinsert into db_set2 values(8); -- d	  insert into db_set2 values(9); -- a,dinsert into db_set2 values(10);-- b,dselect * from db_set2;truncate table db_set2;

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