postgres.git / summary / log / commit / refs

commit    28919a063d8c8b81ca574ac063e26304f41ed2fe
Author:   Bruce Momjian <bruce@momjian.us>
Date:     Tue Sep 26 21:31:06 2023 +0000

    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


 doc/src/sgml/ref/select.sgml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 181edf32741..b4a3f029b79 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -131,6 +131,9 @@ TABLE [ ONLY ] <replaceable class="parameter">table_name</replaceable> [ * ]
       eliminates groups that do not satisfy the given condition.  (See
       <xref linkend="sql-groupby"/> and
       <xref linkend="sql-having"/> 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>
 


[parent: 747cef5a58ca]