with-clause

SQL WITH clause example [duplicate]

The SQL WITH clause was introduced by Oracle in the Oracle 9i release 2 database. The SQL WITH clause allows you to give a sub-query block a name (a process also called sub-query refactoring), which can be referenced in several places within the main SQL query. The name assigned to the sub-query is treated as … Read more

How do you use the “WITH” clause in MySQL?

MySQL prior to version 8.0 doesn’t support the WITH clause (CTE in SQL Server parlance; Subquery Factoring in Oracle), so you are left with using: TEMPORARY tables DERIVED tables inline views (effectively what the WITH clause represents – they are interchangeable) The request for the feature dates back to 2006. As mentioned, you provided a … Read more