When and How Can I Use MySQL's WITH Clause?

MySQL’s WITH clause: a little-known feature

MySQL users may need to create common table expressions (CTEs) using the "WITH" clause, as supported by other relational database management system (RDBMS) products such as Oracle. Unfortunately, this syntax is not available in MySQL versions prior to 8.0.

Solution for MySQL 8.0

The highly anticipated MySQL 8.0 finally introduces CTEs, including the "WITH" clause, and support for recursive CTEs. Please refer to the official announcement: https://www.php.cn/link/98994c4349015b8585779bf0ea5b4618.

Alternatives to MySQL 5.x

Prior to MySQL 8.0, users had no choice but to use alternatives (such as temporary tables or nested queries) to emulate the functionality of CTE. This can be complex and error-prone.

Other relational database management systems that support CTEs

For those looking for CTE functionality in RDBMS products, the following list provides some references:

• Oracle 9i release 2 and higher: https://www.php.cn/link/a2d22c3252eb5505ba9b1899cda9dad2
• Microsoft SQL Server 2005 and higher: https://www.php.cn/link/631e08b59d01b18c9d5477a62647e03b
• IBM DB2 UDB 8 and higher: https://www.php.cn/link/27e5b67fd10a082a605ee7d995f69eca
• PostgreSQL 8.4 and higher: https://www.php.cn/link/04adc1e3a14eb5fa654770fc7fd077b1
• Sybase 11 and above: https://www.php.cn/link/e430f779f7ff81de0e5b4c4f5e316672

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