mysql同时修改2个表思路详解数据库

UPDATE trans_eval SET issuer_name = MID(issuer_name,4,6) WHERE CHAR_LENGTH(issuer_name) = 11 AND issuer_name LIKE '1%';

CREATE TABLE tmp  
SELECT T2.REG_NO,T2.MOBILE,t1.`issuer_name`  FROM trans_eval  t1,member t2 WHERE t1.issuer_no =t2.`reg_no`   
 AND  MID(t2.`mobile`,4,6) =t1.`issuer_name`  AND 1<>1 GROUP BY T2.REG_NO,T2.MOBILE,t1.`issuer_name` ;

INSERT INTO tmp  
SELECT T2.REG_NO,T2.MOBILE,t1.`issuer_name`  FROM trans_eval  t1,member t2 WHERE t1.issuer_no =t2.`reg_no`   
 AND  MID(t2.`mobile`,4,6) =t1.`issuer_name`  GROUP BY T2.REG_NO,T2.MOBILE,t1.`issuer_name` ;

SELECT * FROM tmp; 
UPDATE tmp t1,trans_eval t2 SET t2.`issuer_name`=t1.`MOBILE` WHERE t1.`REG_NO`=t2.`issuer_no`;