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  • 将某个MySQL库中的UTF8字符列都转成GBK格式

    DELIMITER $$

    DROP PROCEDURE IF EXISTS `dba`.`Proc_ChangeCharacter2GBK`$$

    CREATE DEFINER=`root`@`%` PROCEDURE `  Proc_ChangeCharacter2GBK`(in DATABASENAME varchar(20))
    BEGIN
        DECLARE done INT DEFAULT 0;
        DECLARE a VARCHAR(64) DEFAULT '';
        DECLARE b VARCHAR(64) DEFAULT '';
        DECLARE c VARCHAR(64) DEFAULT '';
        DECLARE d VARCHAR(64) DEFAULT '';
        DECLARE l_sql VARCHAR(500);
        
        DECLARE AlterColumnsCharacter CURSOR FOR
               SELECT TABLE_SCHEMA,TABLE_NAME,COLUMN_NAME,COLUMN_TYPE
               FROM information_schema.COLUMNS
               WHERE TABLE_SCHEMA=DATABASENAME
                    and TABLE_NAME in (  SELECT B.TABLE_NAME FROM information_schema.TABLES B
                                                              WHERE B.TABLE_SCHEMA=DATABASENAME  AND B.TABLE_TYPE='BASE TABLE' ) 
                    and COLUMN_TYPE like '%VARCHAR%' and CHARACTER_SET_NAME='utf8' and COLLATION_NAME='utf8_general_ci';

        DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1;
      
        OPEN AlterColumnsCharacter;
      
        REPEAT  FETCH AlterColumnsCharacter INTO a,b,c,d;

        if(done = 0) then 
          SET l_sql=CONCAT(' alter table ',a, '.',b,' change ',c,' ',c,' ',d,' character set gbk collate gbk_chinese_ci NULL; '); 
          SET @sql=l_sql;
          PREPARE s1 FROM @sql;
          EXECUTE s1;
          DEALLOCATE PREPARE s1;
        end if;
        
       
        UNTIL done 
        END REPEAT;
        CLOSE AlterColumnsCharacter;
        END$$

    DELIMITER ;


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  • 原文地址:https://www.cnblogs.com/keanuyaoo/p/3317994.html
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