mysql和Oracle 遊標的使用
阿新 • • 發佈：2017-11-29
mysql和oracle 遊標的使用使用遊標根據一個表中的數據，循環創建不同的表
DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_pro=1;
#三 打開遊標
OPEN cursor_create_user;
#四 給遊標賦值
FETCH NEXT FROM cursor_create_user INTO num;
#五 準配重復調用遊標的信息
REPEAT
SET @sql=CONCAT('create table zy.tf_f_user_p',num,'(user_name varchar(20),user_state int)engine=innodb default charset=utf8');
PREPARE create_sql FROM @sql;
EXECUTE create_sql;
DEALLOCATE PREPARE create_sql;
FETCH NEXT FROM cursor_create_user INTO num; #####必須標明，否則循環失敗
UNTIL no_more_pro=1 #調用所有遊標數據
END REPEAT; #關閉重復調用
CLOSE cursor_create_user; #關閉遊標
END;
BEGIN
DECLARE no_more_pro INT DEFAULT 0;
DECLARE num VARCHAR(20);
#一 聲明一個遊標
DECLARE cursor_create_user CURSOR FOR SELECT area_code FROM zy.jk_jkzl_political_location;
#二 聲明一個處理異常的信息
DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_pro=1;
#三 打開遊標
OPEN cursor_create_user;
#四 給遊標賦值
FETCH NEXT FROM cursor_create_user INTO num;
#五 準配重復調用遊標的信息
REPEAT
SET @sql=CONCAT('create table zy.tf_f_user_p',num,'(user_name varchar(20),user_state int)engine=innodb default charset=utf8');
SELECT NOW();
PREPARE create_sql FROM @sql;
EXECUTE create_sql;
DEALLOCATE PREPARE create_sql;
FETCH NEXT FROM cursor_create_user INTO num;
UNTIL no_more_pro=1 #調用所有遊標數據
END REPEAT; #關閉重復調用
CLOSE cursor_create_user; #關閉遊標
END;
mysql中的
DELIMITER $$
DROP PROCEDURE IF EXISTS zy.jk_jkzl_political_location_pro $$
CREATE PROCEDURE zy.jk_jkzl_political_location_pro()
BEGIN
DECLARE no_more_pro INT DEFAULT 0;
DECLARE num VARCHAR(20);
#一 聲明一個遊標
DECLARE cursor_create_user CURSOR FOR SELECT area_code FROM zy.jk_jkzl_political_location;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_pro=1;
#三 打開遊標
OPEN cursor_create_user;
#四 給遊標賦值
FETCH NEXT FROM cursor_create_user INTO num;
#五 準配重復調用遊標的信息
REPEAT
SET @sql=CONCAT('create table zy.tf_f_user_p',num,'(user_name varchar(20),user_state int)engine=innodb default charset=utf8');
PREPARE create_sql FROM @sql;
EXECUTE create_sql;
DEALLOCATE PREPARE create_sql;
FETCH NEXT FROM cursor_create_user INTO num; #####必須標明，否則循環失敗
UNTIL no_more_pro=1 #調用所有遊標數據
END REPEAT; #關閉重復調用
CLOSE cursor_create_user; #關閉遊標
END;
Oracle 的測試：
DELIMITER $$
DROP PROCEDURE IF EXISTS zy.jk_jkzl_political_location_pro $$
BEGIN
DECLARE no_more_pro INT DEFAULT 0;
DECLARE num VARCHAR(20);
#一 聲明一個遊標
DECLARE cursor_create_user CURSOR FOR SELECT area_code FROM zy.jk_jkzl_political_location;
#二 聲明一個處理異常的信息
DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_pro=1;
#三 打開遊標
OPEN cursor_create_user;
#四 給遊標賦值
FETCH NEXT FROM cursor_create_user INTO num;
#五 準配重復調用遊標的信息
REPEAT
SET @sql=CONCAT('create table zy.tf_f_user_p',num,'(user_name varchar(20),user_state int)engine=innodb default charset=utf8');
SELECT NOW();
PREPARE create_sql FROM @sql;
EXECUTE create_sql;
DEALLOCATE PREPARE create_sql;
FETCH NEXT FROM cursor_create_user INTO num;
UNTIL no_more_pro=1 #調用所有遊標數據
END REPEAT; #關閉重復調用
CLOSE cursor_create_user; #關閉遊標
END;
mysql和Oracle 遊標的使用