Structured Query Language (SQL) is a language for querying databases. Questions should include code examples and table structure, and include a tag for the DBMS implementation (e.g. MySQL, PostgreSQL, Oracle, MS SQL Server) being used. If your question relates to a specific DBMS (uses specific extensions/features), use that DBMS's tag instead. Answers to questions tagged with SQL should use ANSI SQL as much as possible.
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