On Fri, Apr 11, 2025, at 5:32 AM, Yaroslav Saburov wrote:
>
> Thank you all.
>
>
>
> In order not to open a new thread, (small clarification)
>
Don't be afraid to open a new thread. Indeed, a new topic (even if it is
minimal) deserves a new thread.
> On the tutorial-agg page in the code example
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>
>
> SELECT city FROM weather WHERE temp_lo = max(temp_lo); WRONG
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>
>
> you need to add a comment before WRONG
>
If you consider that that query is correct and it fails in the "wrong" then you
made the point.
postgres-# select 1; wrong
ERROR: syntax error at or near "WRONG"
LINE 1: WRONG
^
However, the query is not correct and it fails before processing the second
statement (wrong) so it doesn't matter much in this case. Even after saying
that, I agree with you that this annotation without the comment characters
don't make much sense.
postgres=# SELECT city FROM weather WHERE temp_lo = max(temp_lo); WRONG
ERROR: aggregate functions are not allowed in WHERE
LINE 1: SELECT city FROM weather WHERE temp_lo = max(temp_lo);
^
--
Euler Taveira
EDB https://www.enterprisedb.com/
diff --git a/doc/src/sgml/query.sgml b/doc/src/sgml/query.sgml
index 59962d6e856..727a0cb185f 100644
--- a/doc/src/sgml/query.sgml
+++ b/doc/src/sgml/query.sgml
@@ -671,7 +671,7 @@ SELECT max(temp_lo) FROM weather;
we might try:
<programlisting>
-SELECT city FROM weather WHERE temp_lo = max(temp_lo); <lineannotation>WRONG</lineannotation>
+SELECT city FROM weather WHERE temp_lo = max(temp_lo); <lineannotation>-- WRONG</lineannotation>
</programlisting>
but this will not work since the aggregate
