Thread

Re: [HACKERS] Arrays broken on temp tables

Bruce Momjian <maillist@candle.pha.pa.us> — 1999-11-06T20:51:36Z

> Greetings.  I recently encountered a problem updating an array element on
> a temp table.  Instead of updating just the specified array element, it
> copies the array values onto all the tuples.  The command works as
> expected with regular tables.
> 
> 
> create temp table tmpArray (
>         id      int4,
>         val     int4[]
> );
> CREATE
> insert into tmpArray values (1, '{1,2,3,4}');
> INSERT 24630506 1
> insert into tmpArray values (2, '{4,3,2,1}');
> INSERT 24630507 1
> insert into tmpArray values (3, '{9,10,11,12}');
> INSERT 24630508 1
> select * from tmpArray;
> id|val
> --+------------
>  1|{1,2,3,4}
>  2|{4,3,2,1}
>  3|{9,10,11,12}
> (3 rows)
> 
> update tmpArray set val[3] = 7;
> UPDATE 3
> select * from tmpArray;
> id|val
> --+---------
>  1|{1,2,7,4}
>  2|{1,2,7,4}
>  3|{1,2,7,4}
> (3 rows)
> 
> drop table tmpArray;
> DROP
> EOF
> 
> - K

Bug confirmed.  Wow, that is strange.  There isn't anything about temp
table that would suggest this would happen. I will keep the bug report
and try to figure it out in the future.

-- 
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