MYSQL存储过程,实在无法,求解释??
BEGIN DECLARE Pmax INT; -- 记录统计表中最大ID DECLARE Pmin INT; -- 记录统计表中最小ID DECLARE PID SMALLINT(6);-- 记录当前统计Pack_ID DELETE FROM packcollectionrank;-- 清空表 INSERT INTO packcollectionrank(Pack_ID) SELECT DISTINCT Pack_ID FROM products ;-- 插入所有Pack_ID到统计表packcollectionrank SELECT MAX(ID) INTO Pmax FROM packcollectionrank; SELECT MIN(ID) INTO Pmin FROM packcollectionrank; WHILE Pmin<=Pmax DO-- 插入所有Pack_ID的人气,没订阅默认为0 SELECT Pack_ID INTO PID FROM packcollectionrank WHERE ID=Pmin; SET @sql1=CONCAT("UPDATE packcollectionrank SET Collection_count=(SELECT COUNT(*) FROM userservicerelation WHERE Pack_ID=",PID," AND Relation_Status=6) WHERE Pack_ID=",PID,";"); PREPARE rankpack1 FROM @sql1; EXECUTE rankpack1; SET Pmin=Pmin+1; END WHILE; -- 插入END[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'declare Pmax int;