postgres.git / summary / log / commit / refs

commit    e1ae79b99a9ccbd1022bd1c8c6dc6053d75bc9e9
Author:   Bruce Momjian <bruce@momjian.us>
Date:     Tue Sep 26 21:31:05 2023 +0000
First released in: 17.0, 11.22, 12.17, 13.13, 14.10, 15.5, 16.1

    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 0e48cc84654..796e47c43a0 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -129,6 +129,9 @@ 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>
 


[parent: 6181eca090da]