Skip to content

Instantly share code, notes, and snippets.

@rmsaitam
Created May 29, 2018 18:08
Show Gist options
  • Save rmsaitam/315a0776f9523c2c34210f922b3fe72e to your computer and use it in GitHub Desktop.
Save rmsaitam/315a0776f9523c2c34210f922b3fe72e to your computer and use it in GitHub Desktop.
Procedure to search through all databases, tables and columns in MySQL DB Server.
# Search through all databases, tables, and columns in a MySQL db.
# From http://kedar.nitty-witty.com/blog/search-through-all-databases-tables-columns-in-mysql
## Table for storing resultant output
CREATE TABLE `temp_details` (
`t_schema` varchar(45) NOT NULL,
`t_table` varchar(45) NOT NULL,
`t_field` varchar(45) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
## Procedure for search in all fields of all databases
DELIMITER $$
# Script to loop through all tables using Information_Schema
DROP PROCEDURE IF EXISTS get_table $$
CREATE PROCEDURE 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
# Insert results from search
INSERT INTO temp_details VALUES(db,tbl,clmn);
END IF;
IF done=1 THEN
LEAVE table_loop;
END IF;
END LOOP;
CLOSE table_cur;
# Show Results
SELECT * FROM temp_details;
END $$
DELIMITER ;
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment