NEW + tableOID

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Hi Fellows,

I have a bunch of tables which I need to perform a Full Text Search.
The approach I am using is to insert into another table (the searcheable
table): tsvector information, tableOID and the record Id

I do this with triggers. This issue I have is that the tableoid data cannot
be used with the NEW keyword. I always get value 0 instead of the actual
tableoid.

Insert statement looks something like this:
INSERT INTO fts.fdata(tbl_oid, id, vector_info)
VALUES (NEW.tableoid, NEW.id, NEW.vector_info)

So how can I get the tableoid in a trigger function ?


regards,


Ricardo

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Hi Fellows,

Re: NEW + tableOID

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By the way,

Another option to do this, is to do some table Inheritance. So Full Text
Search is perform on each table.

So which scenario is better ? Triggers which insert data into a third table,
or Inheritance ?

Thanks in advanced !


Ricardo.

On Fri, Aug 13, 2010 at 6:08 PM, Ricardo Bayley wrote:

> Hi Fellows,
>
> I have a bunch of tables which I need to perform a Full Text Search.
> The approach I am using is to insert into another table (the searcheable
> table): tsvector information, tableOID and the record Id
>
> I do this with triggers. This issue I have is that the tableoid data cannot
> be used with the NEW keyword. I always get value 0 instead of the actual
> tableoid.
>
> Insert statement looks something like this:
> INSERT INTO fts.fdata(tbl_oid, id, vector_info)
> VALUES (NEW.tableoid, NEW.id, NEW.vector_info)
>
> So how can I get the tableoid in a trigger function ?
>
>
> regards,
>
>
> Ricardo
>
>

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By the way,

Re: NEW + tableOID

Ricardo Bayley writes:
> I do this with triggers. This issue I have is that the tableoid data cannot
> be used with the NEW keyword. I always get value 0 instead of the actual
> tableoid.

That might work in an AFTER trigger, but it definitely won't work in a
BEFORE trigger, because the NEW row isn't actually part of the table at
that point. You'd probably be better off to rely on the trigger
function TG_RELID parameter instead, anyway.

regards, tom lane

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Re: NEW + tableOID

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Thanks Tom that was exactly what I was looking for.

Do you think that having just 1 table to perform the Full Text Search is a
better approach than having 1 master table with child tables, and always
querying the Master one ? Which do you believe is faster ?

regards

On Fri, Aug 13, 2010 at 6:45 PM, Tom Lane wrote:

> Ricardo Bayley writes:
> > I do this with triggers. This issue I have is that the tableoid data
> cannot
> > be used with the NEW keyword. I always get value 0 instead of the actual
> > tableoid.
>
> That might work in an AFTER trigger, but it definitely won't work in a
> BEFORE trigger, because the NEW row isn't actually part of the table at
> that point. You'd probably be better off to rely on the trigger
> function TG_RELID parameter instead, anyway.
>
> regards, tom lane
>

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Thanks Tom that was exactly what I was looking for.