Update DELETE FROM:

< * Allow DELETE to handle table aliases for self-joins > * Allow an alias to be provided for the target table in UPDATE/DELETE 276,279c276,282 < There is no way to create a table alias for the deleted table for use < in the DELETE WHERE clause. The agreed approach is to allow a USING < clause to specify additional tables. UPDATE already has an optional < FROM clause for this purpose. > This is not SQL-spec but many DBMSs allow it. > > * Allow additional tables to be specified in DELETE for joins > > UPDATE already allows this (UPDATE...FROM) but we need similar > functionality in DELETE. It's been agreed that the keyword should > be USING, to avoid anything as confusing as DELETE FROM a FROM b.

Update DELETE FROM:
< * Allow DELETE to handle table aliases for self-joins > * Allow an alias to be provided for the target table in UPDATE/DELETE 276,279c276,282 < There is no way to create a table alias for the deleted table for use < in the DELETE WHERE clause. The agreed approach is to allow a USING < clause to specify additional tables. UPDATE already has an optional < FROM clause for this purpose. > This is not SQL-spec but many DBMSs allow it. > > * Allow additional tables to be specified in DELETE for joins > > UPDATE already allows this (UPDATE...FROM) but we need similar > functionality in DELETE. It's been agreed that the keyword should > be USING, to avoid anything as confusing as DELETE FROM a FROM b.
f7667e4c · Bruce Momjian · 2c29664b · f7667e4c
Commit f7667e4c authored Aug 10, 2004 by Bruce Momjian
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--- a/doc/TODO
+++ b/doc/TODO
@@ -5,7 +5,7 @@ TODO list for PostgreSQL
 Bracketed items "[]" have more detail.

 Current maintainer:	Bruce Momjian (pgman@candle.pha.pa.us)
-Last updated:		Tue Aug 10 11:00:16 EDT 2004
+Last updated:		Tue Aug 10 13:30:30 EDT 2004

 The most recent version of this document can be viewed at the PostgreSQL web site, http://www.PostgreSQL.org.

@@ -271,12 +271,15 @@ Commands
  The use of C-style backslashes (.e.g. \n, \r) in quoted strings is not
  SQL-spec compliant, so allow such handling to be disabled.

-* Allow DELETE to handle table aliases for self-joins
+* Allow an alias to be provided for the target table in UPDATE/DELETE

-  There is no way to create a table alias for the deleted table for use
-  in the DELETE WHERE clause.  The agreed approach is to allow a USING 
-  clause to specify additional tables.  UPDATE already has an optional 
-  FROM clause for this purpose.
+  This is not SQL-spec but many DBMSs allow it.
+
+* Allow additional tables to be specified in DELETE for joins
+
+  UPDATE already allows this (UPDATE...FROM) but we need similar
+  functionality in DELETE.  It's been agreed that the keyword should 
+  be USING, to avoid anything as confusing as DELETE FROM a FROM b.

 * Add CORRESPONDING BY to UNION/INTERSECT/EXCEPT
 * Allow REINDEX to rebuild all database indexes, remove /contrib/reindex