Re: [SQL] Operator <> for lseg,lseg bug

> Hi
>
> I was testing some things with the geometric datatype in Postgres (6.3)
> and got some results out of selects that I did not expect. Doing a \do
> in psql gave me:
>
> <--SNIP-->
> <>   |bool     |float8    |float8    |not equal
> <>   |bool     |int2      |int2      |not equal
> <>   |bool     |int4      |int4      |not equal
> <>   |bool     |lseg      |lseg      |equals
> <>   |bool     |money     |money     |not equal
> <>   |bool     |name      |name      |not equal
> <>   |bool     |oid       |oid       |not equal
> <--SNIP-->
>
> This looks like a wrong entry in one of the system tables. Any ideas which
> one it is, and how to correct this ?

Good eye.  Yes, it was wrong.  To fix it, edit
/pgsql/src/include/catalog/pg_operator.h.

Search for the strings 'lseq_eq'.   The first instance is correct, but
the second instance should be 'lseg_neq'.  Then you must run initdb to
reload the system tables.

Another way to do this would be to do an update on 'pg_operator'.  I
believe the oid is 1586, and the field is oprcode, so you can try:

    update pg_operator
    set oprcode = 'lseg_neq'
    where oid = 1586

\do should then show the proper values.

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