mysql 如何给变量赋一个动态sql执行的结果
在存储过程中DECLAREdt_idvarchar(32);SET@sqls=CONCAT('SELECTidFROMw_volume_detailWHEREv_id="...
在存储过程中
DECLARE dt_id varchar(32);
SET @sqls=CONCAT('SELECT id
FROM
w_volume_detail
WHERE
v_id = "',dd_id,'"AND uid IS NULL LIMIT 0,1');
prepare stms from @sqls;
execute stms;
想把上面sql执行的结果赋值给dt_id 展开
DECLARE dt_id varchar(32);
SET @sqls=CONCAT('SELECT id
FROM
w_volume_detail
WHERE
v_id = "',dd_id,'"AND uid IS NULL LIMIT 0,1');
prepare stms from @sqls;
execute stms;
想把上面sql执行的结果赋值给dt_id 展开
2个回答
展开全部
DECLARE dt_id varchar(32);
SET @sqls=CONCAT('SELECT id
FROM
w_volume_detail
WHERE
v_id = "',dd_id,'"AND uid IS NULL LIMIT 0,1');
execute immediate @sqls into dt_id;
追问
兄弟 mysql中有 execute immediate吗？
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