Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Mysql Stored Procedure Dynamic Paramter For Cursor

Posted on 2009-07-14
1
Medium Priority
?
1,809 Views
Last Modified: 2013-12-13
Hi to all,
I want to pass a db name ChangeCreationDate function to alter all tables of db which passed via parameters.
But i take an error Unknown database 'dbName'.. I can't use database name dynamically. How can i do this?

Thanks
DELIMITER $$
 
DROP PROCEDURE IF EXISTS `ChangeCreationDate`$$
 
CREATE  PROCEDURE `ChangeCreationDate`(dbName VARCHAR(50))
BEGIN
  DECLARE done INT DEFAULT 0;
  DECLARE tableName TINYTEXT;
  DECLARE cur1 CURSOR FOR SHOW TABLES FROM dbName; //i need at here db name passes via parameter.
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
  OPEN cur1;
  REPEAT
    FETCH cur1 INTO tableName;
    SELECT tableName;
    IF NOT done THEN
		IF SUBSTRING(tableName,1,3)='fd_' THEN
			IF v5_versioning.ColumnIsExists(dbName,tableName,'creation_date') THEN
				SET @ssql=CONCAT('ALTER TABLE ',dbName,'.',tableName,' CHANGE creation_date created_date TIMESTAMP');
				SELECT @ssql;
				/*
				PREPARE stmt FROM @ssql;
				EXECUTE stmt;
				*/
			END IF;
		END IF;
    END IF;
  UNTIL done END REPEAT;
  CLOSE cur1;
END$$
 
DELIMITER ;

Open in new window

0
Comment
Question by:erenpasa
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 

Accepted Solution

by:
erenpasa earned 0 total points
ID: 24849999
I've change the line with
DECLARE cur1 CURSOR FOR SELECT table_name FROM information_schema.TABLES WHERE table_schema=dbName;

it's okay.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Lotus Notes has been used since a very long time as an e-mail client and is very popular because of it's unmatched security. In this article we are going to learn about  RRV Bucket corruption and understand various methods to Fix "RRV Bucket Corrupt…
In this article, I’ll look at how you can use a backup to start a secondary instance for MongoDB.
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question