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pgsql: Split out MERGE and REPLACE/UPSERT items.

From: momjian(at)postgresql(dot)org (Bruce Momjian)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Split out MERGE and REPLACE/UPSERT items.
Date: 2005-12-01 22:07:59
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Lists: pgsql-committers
Log Message:
Split out MERGE and REPLACE/UPSERT items.

< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
<   triggers?)
> * Add SQL-standard MERGE command, typically used to merge two tables
>   This is similar to UPDATE, then for unmatched rows, INSERT.
>   Whether concurrent access allows modifications which could cause
>   row loss is implementation independent.
> * Add REPLACE or UPSERT command that does UPDATE, or on failure, INSERT

Modified Files:
        TODO (r1.1706 -> r1.1707)
        TODO.html (r1.213 -> r1.214)

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