建立存储过程的sql如下:
CREATE PROCEDURE proc_variable ()
BEGIN
DECLARE dec_var_ VARCHAR(100);
DECLARE rep_num INT;
DECLARE dec_var CURSOR for SELECT ID_ FROM ACT_RU_VARIABLE WHERE NAME_ = ‘yjdqsj‘ GROUP BY EXECUTION_ID_ HAVING COUNT(NAME_) >1;
OPEN dec_var;
REPEAT
FETCH dec_var INTO dec_var_;
DELETE FROM ACT_RU_VARIABLE WHERE ID_ = dec_var_;
UNTIL rep_num END REPEAT;
CLOSE dec_var;
end;
如果把上面的语句直接执行的话,遇到第一个‘;‘就结束了,然后剩下的都会报错。原因是默认mysql命令结束符是分号,需要修改结束符才可以执行。
mysql([email protected]:jjsworkflow)>delimiter // #修改命令终止符为//(random)
mysql([email protected]:jjsworkflow)>CREATE PROCEDURE proc_variable ()
-> BEGIN
-> DECLARE dec_var_ VARCHAR(100);
-> DECLARE rep_num INT;
-> DECLARE dec_var CURSOR for SELECT ID_ FROM ACT_RU_VARIABLE WHERE NAME_ = ‘yjdqsj‘ GROUP BY EXECUTION_ID_ HAVING COUNT(NAME_) >1;
-> OPEN dec_var;
-> REPEAT
-> FETCH dec_var INTO dec_var_;
-> DELETE FROM ACT_RU_VARIABLE WHERE ID_ = dec_var_;
-> UNTIL rep_num END REPEAT;
-> CLOSE dec_var;
-> end;
-> // ##语句最后需要已上面声明的//结尾enter才能被执行
即把//’‘‘//之间的内容封装到一起执行。此修改是session级别,退出后即失效