Re: pretty print for check constraints broken - Mailing list pgsql-patches

Your patch has been added to the PostgreSQL unapplied patches list at:

    http://momjian.postgresql.org/cgi-bin/pgpatches

I will try to apply it within the next 48 hours.

---------------------------------------------------------------------------


Christopher Kings-Lynne wrote:
> Hi,
>
> The brackets aren't put on the CHECK constraints properly.
>
> Before patch:
>
> test=# select pg_get_constraintdef(oid) from pg_constraint;
>                                        pg_get_constraintdef
> -------------------------------------------------------------------------------------------------
>   CHECK (VALUE >= 0)
>   CHECK ((((a)::text = 'asdf'::text) OR ((a)::text = 'fdsa'::text)) OR
> ((a)::text = 'dfd'::text))
>   PRIMARY KEY (b)
>   FOREIGN KEY (a) REFERENCES test2(b)
>   UNIQUE (b)
> (5 rows)
>
> test=# select pg_get_constraintdef(oid, true) from pg_constraint;
>                                 pg_get_constraintdef
> -----------------------------------------------------------------------------------
>   CHECK VALUE >= 0
>   CHECK a::text = 'asdf'::text OR a::text = 'fdsa'::text OR a::text =
> 'dfd'::text
>   PRIMARY KEY (b)
>   FOREIGN KEY (a) REFERENCES test2(b)
>   UNIQUE (b)
> (5 rows)
>
> After patch:
>
> test=# select pg_get_constraintdef(oid) from pg_constraint;
>                                        pg_get_constraintdef
> -------------------------------------------------------------------------------------------------
>   CHECK (VALUE >= 0)
>   CHECK ((((a)::text = 'asdf'::text) OR ((a)::text = 'fdsa'::text)) OR
> ((a)::text = 'dfd'::text))
>   PRIMARY KEY (b)
>   FOREIGN KEY (a) REFERENCES test2(b)
>   UNIQUE (b)
> (5 rows)
>
> test=# select pg_get_constraintdef(oid, true) from pg_constraint;
>                                 pg_get_constraintdef
> -----------------------------------------------------------------------------------
>   CHECK (VALUE >= 0)
>   CHECK (a::text = 'asdf'::text OR a::text = 'fdsa'::text OR a::text =
> 'dfd'::text)
>   PRIMARY KEY (b)
>   FOREIGN KEY (a) REFERENCES test2(b)
>   UNIQUE (b)
> (5 rows)
>
> It's important that those brackets are there to (a) match all other
> constraints and (b) so that people can just copy and paste them and it
> will work as SQL.
>
> Chris
>

> Index: src/backend/utils/adt/ruleutils.c
> ===================================================================
> RCS file: /projects/cvsroot/pgsql-server/src/backend/utils/adt/ruleutils.c,v
> retrieving revision 1.154
> diff -c -r1.154 ruleutils.c
> *** src/backend/utils/adt/ruleutils.c    15 Sep 2003 20:03:37 -0000    1.154
> --- src/backend/utils/adt/ruleutils.c    26 Sep 2003 07:45:02 -0000
> ***************
> *** 1056,1061 ****
> --- 1056,1065 ----
>                    */
>                   appendStringInfo(&buf, "CHECK ");
>
> +                 /* If we're pretty-printing we need to add brackets */
> +                 if (prettyFlags != 0)
> +                     appendStringInfo(&buf, "(");
> +
>                   /* Fetch constraint source */
>                   val = heap_getattr(tup, Anum_pg_constraint_conbin,
>                                      RelationGetDescr(conDesc), &isnull);
> ***************
> *** 1093,1098 ****
> --- 1097,1106 ----
>
>                   /* Append the constraint source */
>                   appendStringInfoString(&buf, consrc);
> +
> +                 /* If we're pretty-printing we need to add brackets */
> +                 if (prettyFlags != 0)
> +                     appendStringInfo(&buf, ")");
>
>                   break;
>               }

>
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