Home > Database > Mysql Tutorial > How to Execute SQL Queries with Dynamic Table Names in MySQL?

How to Execute SQL Queries with Dynamic Table Names in MySQL?

Patricia Arquette
Release: 2024-11-09 10:56:02
Original
474 people have browsed it

How to Execute SQL Queries with Dynamic Table Names in MySQL?

Dynamic Table Names in SQL Statements

Executing SQL queries with dynamic table names can be challenging. Consider the following example:

SET @id := '47';
SET @table := @id+'_2013_2014_voucher';
SELECT * FROM @table;
Delete FROM @table where>
Copy after login

This query throws the following error:

[Err] 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 '@table' at line 1
Copy after login

Solution Using Prepared Statements

The recommended approach for handling dynamic table names is to use prepared statements. Prepared statements allow you to dynamically specify the table name while ensuring proper syntax and security. In MySQL, you can use the PREPARE and EXECUTE statements as follows:

SET @id := '47';
SET @table := concat(@id,'_2013_2014_voucher');
set @qry1:= concat('select * from ',@table);
prepare stmt from @qry1 ;
execute stmt ;
Copy after login

The CONCAT() function is used to dynamically concatenate the table name string. The prepared statement is then executed, avoiding the syntax error.

Applying to Delete Query

The same approach can be extended to delete queries:

SET @qry2:= concat('DELETE FROM ',@table,' where>
Copy after login

The above is the detailed content of How to Execute SQL Queries with Dynamic Table Names in MySQL?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template