On Tuesday 12 January 2010 6:24:13 am Vincenzo Romano wrote: > 2010/1/12 Tom Lane <t...@sss.pgh.pa.us>: > > Vincenzo Romano <vincenzo.rom...@notorand.it> writes: > >> In a PL/PgSQL function I have the following: > >> ---- > >> execute $l2$ > >> alter table $l2$||ct||$l2$ add check( > >> data>=$1::timestamp and data<$2::timestamp and maga=$3 ) > >> $l2$ using rec.d0,rec.d1,rec.maga; > >> ---- > >> which yields to this error messsge: > >> ERROR: there is no parameter $1 > > > > You can't use a parameter of the function in a CHECK constraint on a > > table. The CHECK constraint is permanent and can't refer to transient > > state like that. > > > > regards, tom lane > > Tom, $1, $2 and $3 should be the substitution arguments from the USING > predicate, not the function argument list, which in my case is an > empty list! > And the EXECUTE shoud implement a static binding with the "variables" > from the USING predicate ... > > -- > Vincenzo Romano > NotOrAnd Information Technologies > NON QVIETIS MARIBVS NAVTA PERITVS
Its hard to tell from the above, but I believe you are having problems with this: "Currently, CHECK expressions cannot contain subqueries nor refer to variables other than columns of the current row. " -- Adrian Klaver adrian.kla...@gmail.com -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
