Mysql error in stored procudure - mysql

Question

This stored procedure is to search through all tables and columns in database.
DELIMITER $$
DROP PROCEDURE IF EXISTS get_table $$
CREATE
/*[DEFINER = { user | CURRENT_USER }]*/
PROCEDURE `auradoxdb`.`get_table`(in_search varchar(50))
READS SQL DATA
BEGIN
DECLARE trunc_cmd VARCHAR(50);
DECLARE search_string VARCHAR(250);
DECLARE db,tbl,clmn CHAR(50);
DECLARE done INT DEFAULT 0;
DECLARE COUNTER INT;
DECLARE table_cur CURSOR FOR
SELECT concat(SELECT COUNT(*) INTO #CNT_VALUE
FROM `’,table_schema,’`.`’, table_name,’`
WHERE `’, column_name,’` REGEXP ”’,in_search,”’
)
, table_schema
, table_name
, column_name
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA NOT IN (‘information_schema’,'test’,'mysql’);
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1;
# #Truncating table for refill the data for new search.
PREPARE trunc_cmd FROM “TRUNCATE TABLE temp_details;”
EXECUTE trunc_cmd ;
OPEN table_cur;
table_loop:LOOP
FETCH table_cur INTO search_string,db,tbl,clmn;
# #Executing the search
SET #search_string = search_string;
SELECT search_string;
PREPARE search_string FROM #search_string;
EXECUTE search_string;
SET COUNTER = #CNT_VALUE;
SELECT COUNTER;
IF COUNTER>0 THEN
# # Inserting required results from search to tablehhh
INSERT INTO temp_details VALUES(db,tbl,clmn);
END IF;
IF done=1 THEN
LEAVE table_loop;
END IF;
END LOOP;
CLOSE table_cur;
# #Finally Show Results
SELECT * FROM temp_details;
END $$
DELIMITER ;
Following error occurs when execute this..
Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds to
your MySQL server version for the right syntax to use near 'SELECT COUNT(*)
INTO #CNT_VALUE FROM `’,table_schema,’`.`’,table_name,’`' at line 12
(0 ms taken)
could any body please help me to solve this?

Answer 1

It appears that you are trying to dynamically build an SQL statement for each table. To do this, you will need to quote the text parts as if it was a normal string and concatenate the dynamic parts. Replacing the query with the following should work:
SELECT concat('SELECT COUNT(*) INTO #CNT_VALUE FROM ',
table_schema,'.', table_name,
' WHERE ', column_name,' REGEXP ''',in_search,''''
)
, table_schema
, table_name
, column_name
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA NOT IN ('information_schema','test','mysql');