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| author | Bruce Momjian <bruce@momjian.us> | 2023-09-26 17:31:06 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2023-09-26 17:31:06 -0400 |
| commit | 3d398ae4a5bb08ed146f94cedc4f4ca39dd8eed7 (patch) | |
| tree | fc2668bee811271529f44de9a5d8c33ee04e67e0 | |
| parent | 26917ebea745b4254895b816e35375865cfa4177 (diff) | |
doc: mention GROUP BY columns can reference target col numbers
Reported-by: hape <postgres-hape@gmx.de>
Discussion: https://postgr.es/m/168871536004.379168.9352636188330923805@wrigleys.postgresql.org
Backpatch-through: 11
| -rw-r--r-- | doc/src/sgml/ref/select.sgml | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml index 1eb8cc04281..474ee23bf25 100644 --- a/doc/src/sgml/ref/select.sgml +++ b/doc/src/sgml/ref/select.sgml @@ -130,6 +130,9 @@ TABLE [ ONLY ] <replaceable class="parameter">table_name</replaceable> [ * ] eliminates groups that do not satisfy the given condition. (See <xref linkend="sql-groupby" endterm="sql-groupby-title"/> and <xref linkend="sql-having" endterm="sql-having-title"/> below.) + Although query output columns are nominally computed in the next + step, they can also be referenced (by name or ordinal number) + in the <literal>GROUP BY</literal> clause. </para> </listitem> |