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9.3

Storing variable returned from SELECT query in stored procedure

Asked by khellendros in MySQL Server

Tags: mysql, stored, procedures

Tonight I found the need to look up stored procedures for the first time. I've been having difficulty selecting a value from a table column and storing it into a variable. The procedure below compiles without issue and executes without error, but, for example, the query which should store whatever is returned from column `guid` in temp_person_guids into variable guid does not store anything.

I'm fairly new to MySQL, so I'm probably simply not using the keywords correctly. Can anyone offer some pointers? 
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CREATE PROCEDURE copyColumntoColumn(IN iterator int(11), IN rowCount int(11), IN guid int(20), IN name varchar(100))
BEGIN
	SET iterator = 0;
	SET rowCount = 5;
	WHILE iterator < rowCount DO
		SET iterator = iterator + 1;
		SELECT `guid` INTO guid FROM temp_person_guids WHERE `id` = iterator LIMIT 1;
		SELECT `name` INTO name FROM persons WHERE `guid` = guid LIMIT 1;
		UPDATE persons_copy SET `name` = name WHERE `guid`= guid LIMIT 1;
	END WHILE;
END
[+][-]09/08/09 09:45 AM, ID: 25283707Expert Comment

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[+][-]09/08/09 11:07 AM, ID: 25284507Accepted Solution

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About this solution

Zone: MySQL Server
Tags: mysql, stored, procedures
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Solution Provided By: nemws1
Participating Experts: 2
Solution Grade: A
 
 
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