Hi all. Im triyng to implement this in plain sql.
The only thing i have working is
select case when (select count(*) from test where id=$1 )
0 then (select count(*) from test where id=$1)
else -1
end;
But it does a doble count(*) that i must avoid.
I cant refer to the 'first' count
Hello
2008/10/17 Gerardo Herzig [EMAIL PROTECTED]:
Hi all. Im triyng to implement this in plain sql.
The only thing i have working is
select case when (select count(*) from test where id=$1 )
0 then (select count(*) from test where id=$1)
else -1
end;
But it does a doble
Gerardo Herzig wrote:
But it does a doble count(*) that i must avoid.
I cant refer to the 'first' count like
select case when (select count(*) from test where id=$1 ) AS total
0 then total
else -1
end;
SELECT
CASE WHEN total 0 THEN total ELSE -1 END AS new_total
FROM (
Richard Huxton wrote:
Gerardo Herzig wrote:
But it does a doble count(*) that i must avoid.
I cant refer to the 'first' count like
select case when (select count(*) from test where id=$1 ) AS total
0 then total
else -1
end;
SELECT
CASE WHEN total 0 THEN total ELSE -1 END
Στις Friday 17 October 2008 15:11:10 ο/η Gerardo Herzig έγραψε:
Richard Huxton wrote:
Gerardo Herzig wrote:
But it does a doble count(*) that i must avoid.
I cant refer to the 'first' count like
select case when (select count(*) from test where id=$1 ) AS total
0 then total
Richard Huxton [EMAIL PROTECTED] writes:
SELECT
CASE WHEN total 0 THEN total ELSE -1 END AS new_total
FROM (
SELECT count(*) AS total FROM test WHERE id=$1
) AS raw_total
Actually you could just do
SELECT
CASE WHEN count(*) 0 THEN count(*) ELSE -1 END AS total
FROM test WHERE id=$1;
Achilleas Mantzios wrote:
Στις Friday 17 October 2008 15:11:10 ο/η Gerardo Herzig έγραψε:
Richard Huxton wrote:
Gerardo Herzig wrote:
But it does a doble count(*) that i must avoid.
I cant refer to the 'first' count like
select case when (select count(*) from test where id=$1 ) AS total
Tom Lane wrote:
Richard Huxton [EMAIL PROTECTED] writes:
SELECT
CASE WHEN total 0 THEN total ELSE -1 END AS new_total
FROM (
SELECT count(*) AS total FROM test WHERE id=$1
) AS raw_total
Actually you could just do
SELECT
CASE WHEN count(*) 0 THEN count(*) ELSE -1 END AS total
