Re: Problem UPDATE Statement

> <operationsengineer1(at)yahoo(dot)com> writes:
> > i'm trying to apply the following UPDATE
> statement:
> > UPDATE t_sn
> > SET t_sn.sn_completed = false
> > WHERE sn = 1
> > AND t_sn.link_id = t_link.link_id
> > AND t_link.job_id = t_job.job_id
> > AND t_job.product_id = t_product.product_id
> > AND t_product.product_id = 118
>
> > i get the following error:
>
> > ERROR: missing FROM-clause entry for table
> "t_link"
>
> You need a "FROM t_link" in there. Prior versions
> of PG were laxer
> about this, but it's been a very long time since
> this command wouldn't
> draw at least a NOTICE ...
>
> regards, tom lane

Tom, thanks. that was it. the basic examples didn't
include the FROM clause - i surmise it isn't required
until you start traversing across linked tables.

this worked...

UPDATE t_sn
SET sn_completed = false
FROM t_link, t_job, t_product
WHERE sn = 1
AND t_sn.link_id = t_link.link_id
AND t_link.job_id = t_job.job_id
AND t_job.product_id = t_product.product_id
AND t_product.product_id = 118

thanks again.

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