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BEGIN
DECLARE s_tablename VARCHAR(100);
/*显示表的数据库中的所有表
SELECT table_name FROM information_schema.tables WHERE table_schema=‘databasename‘ Order by table_name ;
*/
#显示所有
DECLARE cur_table_structure CURSOR
FOR
SELECT table_name
FROM INFORMATION_SCHEMA.TABLES
WHERE table_schema = ‘preschool‘
ORDER BY table_name;
DECLARE CONTINUE HANDLER FOR SQLSTATE ‘02000‘ SET s_tablename = NULL;
OPEN cur_table_structure;
FETCH cur_table_structure INTO s_tablename;
WHILE ( s_tablename IS NOT NULL) DO
SET @MyQuery=CONCAT("alter table `",s_tablename,"` add column sharding_name VARCHAR(30)");
PREPARE msql FROM @MyQuery;
EXECUTE msql ;#USING @c;
FETCH cur_table_structure INTO s_tablename;
END WHILE;
CLOSE cur_table_structure;
END
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原文地址:http://www.cnblogs.com/iliuyuet/p/5497841.html