SELECT URL.id_link, URL.id_user, U.name AS name, URL.id_role, R.name AS role FROM Shop_User_Role_Link URL INNER JOIN Shop_User U ON URL.id_user = U.id_user INNER JOIN Shop_Role R ON URL.id_role = R.id_role ; SELECT * FROM Shop_Role_Permission_Link ; SELECT * FROM Shop_Access_Level ; SELECT * FROM Shop_Permission ; SELECT * FROM Shop_Access_Level ; select * from shop_user; select * from shop_user_audit; select * from Shop_User_Change_Set; /* INSERT INTO Shop_User_Change_Set ( comment ) VALUES ('Demotion'); */ UPDATE Shop_User SET is_super_user = 0, id_change_set = (SELECT id_change_set FROM Shop_User_Change_Set LIMIT 1) WHERE id_user = 1 ; select * from shop_user; select * from shop_user_audit; drop procedure if exists p_test; delimiter // create procedure p_test () begin declare b0 int; declare b1 int; SET b0 = 0; SET b1 = 1; select b0, b1; select cast(b0 as char), cast(b1 as char); select cast(b0 as char character set utf8), cast(b1 as char character set utf8); select convert(b0, char), convert(b1, char); select convert(b0, char character set utf8), convert(b1, char character set utf8); select convert(convert(b0, signed), char), convert(convert(b1, signed), char); select convert(convert(b0, signed), char character set utf8), convert(convert(b1, signed), char character set utf8); end // delimiter ; call p_test(); drop procedure if exists p_test; INSERT INTO Shop_User_Audit ( id_user, name_field, value_prev, value_new, id_change_set ) SELECT id_user, name_field, value_prev, value_new, id_change_set FROM Shop_User_Audit WHERE id_audit = 1 UNION SELECT id_user, name_field, value_prev, value_new, id_change_set FROM Shop_User_Audit WHERE id_audit = 1 ; select * from shop_user_audit; SELECT * FROM Shop_Access_Level; SELECT * FROM Shop_Product;