WITH (excluding RECURSIVE) in query expression”WITH name AS (SELECT…)with … insert … selectTutorial: With — Organize Complex Queries
Product specific forms: with before insert, DML in with.
The with clause is defined in ISO/IEC 9075:2016-2 as optional feature T121. It first appeared in SQL:1999.0
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SQL:1999, formerly known as SQL3 (Eisenberg, Melton)