Thread: Order of columns in a table important in a stored procedure?
Hi,
I use a FOR one_row IN loop where one_row is of type saisies%ROWTYPE.
The loop does a SELECT on a table, bennes, changing a few values.
The idea is that the function should return some bennes rows, but
with additional information, which makes the returned rows
a saisies table-like row set.
I have however noticed that if the SELECT is *NOT* in the correct order
for the table saisies, funny errors happen (such as type constraints --
obviously columns are mixed).
What I do not understand is that I use AS in order to name the columns,
I would think PostgreSQL could get the column names paired.
This is annoying since it means that any change to the data structure,
such as adding columns may make my functions non working.
This is however an old version of PSQL (7.1 I think).
For reference:
CREATE OR REPLACE FUNCTION f_fa_montre(VOID) RETURNS SETOF saisies AS ' DECLARE one_row saisies%ROWTYPE;
BEGIN FOR one_row IN SELECT NULL as idsaisie, b.no_client AS num_client,
b.lieu_entreposage_b5AS chantier, DATE_TRUNC(\'month\', CURRENT_DATE) AS dates, \'0\' AS
num_bon, NULL AS num_art FROM bennes b WHERE (type_fact_p = b.type_fact) LOOP
-- here I do some changes to the one_row, BTW RETURN NEXT one_row; END LOOP;
RETURN; END;'
LANGUAGE 'plpgsql';
The issue: if I exchange num_bon and dates above the query fails.
Thank you for any idea.
Marc SCHAEFER <alphanet-postgresql-sql@alphanet.ch> writes:
> I have however noticed that if the SELECT is *NOT* in the correct order
> for the table saisies, funny errors happen (such as type constraints --
> obviously columns are mixed).
> What I do not understand is that I use AS in order to name the columns,
> I would think PostgreSQL could get the column names paired.
It doesn't do it on the basis of column names.
regards, tom lane
Pardon me ya'll, but can you tell me what a "saisies" is? Thanks, Dick -- Richard Gintz Airlink Systems 7600 Burnet Rd. Suite 515 Austin, TX 78757 PH: 512-231-1240 x108 FX: 512-231-9884 EM: dgintz@AirlinkSystems.com Quoting Marc SCHAEFER <alphanet-postgresql-sql@alphanet.ch>: > Hi, > > I use a FOR one_row IN loop where one_row is of type saisies%ROWTYPE. > The loop does a SELECT on a table, bennes, changing a few values. > > The idea is that the function should return some bennes rows, but > with additional information, which makes the returned rows > a saisies table-like row set. > > I have however noticed that if the SELECT is *NOT* in the correct order > for the table saisies, funny errors happen (such as type constraints -- > obviously columns are mixed). > > What I do not understand is that I use AS in order to name the columns, > I would think PostgreSQL could get the column names paired. > > This is annoying since it means that any change to the data structure, > such as adding columns may make my functions non working. > > This is however an old version of PSQL (7.1 I think). > > For reference: > > CREATE OR REPLACE FUNCTION f_fa_montre(VOID) > RETURNS SETOF saisies > AS ' > DECLARE > one_row saisies%ROWTYPE; > BEGIN > FOR one_row IN > SELECT NULL as idsaisie, > b.no_client AS num_client, > b.lieu_entreposage_b5 AS chantier, > DATE_TRUNC(\'month\', CURRENT_DATE) AS dates, > \'0\' AS num_bon, > NULL AS num_art > FROM bennes b > WHERE (type_fact_p = b.type_fact) > LOOP > -- here I do some changes to the one_row, BTW > RETURN NEXT one_row; > END LOOP; > > RETURN; > END;' > LANGUAGE 'plpgsql'; > > The issue: if I exchange num_bon and dates above the query fails. > > Thank you for any idea. > > > ---------------------------(end of broadcast)--------------------------- > TIP 9: the planner will ignore your desire to choose an index scan if your > joining column's datatypes do not match > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.
Richard Gintz wrote: > Pardon me ya'll, but can you tell me what a "saisies" is? More than one saisy??? -- Until later, Geoffrey
French verb "saisir" : here, to enter data in a system by typing it.noun "saisie" : the action of doing so. It has other meanings :"Saisir" : - (commonly) to grab or get hold of something swiftly - (sometimes) to understandsomething - (lawspeak) that is also what the Oracle layers do to your house when they find out about your benchmark publications. More in the "grab" sense. On Wed, 16 Feb 2005 15:51:00 -0500, Geoffrey <esoteric@3times25.net> wrote: > Richard Gintz wrote: >> Pardon me ya'll, but can you tell me what a "saisies" is? > > More than one saisy??? >