MYSQL全库查找指定字符串

DELIMITER //

DROP PROCEDURE IF EXISTS `proc_FindStrInAllDataBase`//

# CALL `proc_FindStrInAllDataBase` ('testdb','中');

CREATE PROCEDURE `proc_FindStrInAllDataBase` 

(
IN para_databasename VARCHAR(128),
IN para_finstr VARCHAR(128)

)

BEGIN
-- 需要定义接收游标数据的变量 
DECLARE tmp_dbname VARCHAR(128);
DECLARE tmp_tbname VARCHAR(128);
DECLARE tmp_colname VARCHAR(128);

-- 遍历数据结束标志
DECLARE done INT DEFAULT FALSE;

-- 游标
DECLARE cur_db_tb CURSOR 
FOR 
SELECT  
#*,
c.table_schema,c.table_name,c.COLUMN_NAME
FROM 
information_schema.`COLUMNS` C
INNER JOIN information_schema.`TABLES` t ON c.`TABLE_NAME`=t.`TABLE_NAME` 
WHERE
T.`TABLE_TYPE`='BASE TABLE' 
AND 
(c.data_type  LIKE '%char%'  OR c.data_type  LIKE '%text%')
AND 
(C.TABLE_SCHEMA=para_databasename OR IFNULL(para_databasename,'') ='') AND IFNULL(para_finstr,'')<>'';

-- 将结束标志绑定到游标
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
CREATE TEMPORARY TABLE IF NOT EXISTS rstb(dbname VARCHAR(128),tbname VARCHAR(128),colname VARCHAR(128),cnt INT);

-- 打开游标
OPEN cur_db_tb;

-- 开始循环
read_loop: LOOP
-- 提取游标里的数据，这里只有一个，多个的话也一样；
FETCH cur_db_tb INTO  tmp_dbname,tmp_tbname,tmp_colname;
-- 声明结束的时候
IF done THEN
LEAVE read_loop;
END IF;
-- 这里做你想做的循环的事件

SET @sqlstr=CONCAT('select count(1) into @rn from ',tmp_dbname,'.',tmp_tbname,' where ',tmp_colname,' like ''%',para_finstr,'%''');

PREPARE str FROM @sqlstr;
 
EXECUTE str;
 
DEALLOCATE PREPARE str;
IF IFNULL(@rn,0)>0
THEN
INSERT INTO rstb VALUES(tmp_dbname,tmp_tbname,tmp_colname,@rn);
END IF;

END LOOP;
-- 关闭游标
CLOSE cur_db_tb;

SELECT * FROM rstb;
DROP TABLE rstb;

END

//

DELIMITER ;