/*

對*dt庫下的所有數據表刪除docuemttype為空和documenttype為MD,PD,ET的數據：

delete from 表名 where length(documenttype)<2 or documenttype is null or documenttype in ('et','md','pd');

*/

DELIMITER $$

USE `數據庫名稱1`$$

DROP PROCEDURE IF EXISTS `存儲過程名稱1`$$

CREATE PROCEDURE `存儲過程名稱1`()

BEGIN

DECLARE str varchar(40);

DECLARE Done INT DEFAULT 0;

DECLARE rs CURSOR FOR SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = '數據庫名稱1';

/* 異常處理 */

DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET Done = 1;

/* 打開游標 */

OPEN rs;

/* 逐個取出當前記錄userId字段的值*/

FETCH NEXT FROM rs INTO str;

/* 遍歷數據表 */

REPEAT

delete from str where length(documenttype)<2 or documenttype is null or documenttype in ('et','md','pd');

FETCH NEXT FROM rs INTO str;

UNTIL Done END REPEAT;

/* 關閉游標 */

CLOSE rs;

END$$

DELIMITER ;

use 數據庫名稱1;

call 存儲過程名稱1;

/*

對*sd庫下的所有數據表刪除docuemttype不為空的數據

delete from 表名 where length(documenttype)>1;

*/

DELIMITER $$

USE `數據庫名稱2`$$

DROP PROCEDURE IF EXISTS `存儲過程名稱2`$$

CREATE PROCEDURE `存儲過程名稱2`()

BEGIN

DECLARE str varchar(40);

DECLARE Done INT DEFAULT 0;

DECLARE rs CURSOR FOR SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = '數據庫名稱2';

/* 異常處理 */

DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET Done = 1;

/* 打開游標 */

OPEN rs;

/* 逐個取出當前記錄userId字段的值*/

FETCH NEXT FROM rs INTO str;

/* 遍歷數據表 */

REPEAT

delete from str where length(documenttype)>1;

FETCH NEXT FROM rs INTO str;

UNTIL Done END REPEAT;

/* 關閉游標 */

CLOSE rs;

END$$

DELIMITER ;

use 數據庫名稱2;

call 存儲過程名稱2;

/*

對*et庫下的所有數據表刪除非學位論文數據：

delete from 表名 where length(doucmenttype)='' or documenttype is null or documenttype not in ('et','md','pd');

*/

DELIMITER $$

USE `數據庫名稱3`$$

DROP PROCEDURE IF EXISTS `存儲過程名稱3`$$

CREATE PROCEDURE `存儲過程名稱3`()

BEGIN

DECLARE str varchar(40);

DECLARE Done INT DEFAULT 0;

DECLARE rs CURSOR FOR SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = '數據庫名稱3';

/* 異常處理 */

DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET Done = 1;

/* 打開游標 */

OPEN rs;

/* 逐個取出當前記錄userId字段的值*/

FETCH NEXT FROM rs INTO str;

/* 遍歷數據表 */

REPEAT

delete from str where length(doucmenttype)='' or documenttype is null or documenttype not in ('et','md','pd');

FETCH NEXT FROM rs INTO str;

UNTIL Done END REPEAT;

/* 關閉游標 */

CLOSE rs;

END$$

DELIMITER ;

use 數據庫名稱3;

call 存儲過程名稱3;

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本文系統來源：php中文網

TAG標簽：數據庫數據表

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