Dan,
>SELECT count(*)
>FROM feeds
>WHERE feedID IN (
> SELECT feeds FROM month_totals
> WHERE customerID=9 AND month_unique=1105
>)
>expected result should be 4 , i get 1. If i manually put in
> SELECT count(*) FROM feeds WHERE feedID IN (1,2,3,4)
>for instance i get 4
Why the subquery? Aren't you just asking for the count of feeds rows
joined to month_totals on customerID=9 and month_unique=1105, ie
SELECT COUNT(*)
FROM feeds AS f
INNER JOIN month_totals AS m ON (f.feed_id=m.feeds)
WHERE m.customerID=9 AND m.month_unique=1105;
If the returned count is not as expected, temporarily replace COUNT(*)
with DISTINCT feed_id to see what your query is picking up.
PB
-----
Dan Rossi wrote:
Hi, im having some issues with a sub query in mysql5 , i have a field
which is storing a static comma seperate list of primary keys ie
1,2,3,4 , i am then trying to use that to find entries in another
table of the same primary keys here is the sql
SELECT count(*) FROM feeds WHERE feedID IN (SELECT feeds FROM
month_totals WHERE customerID=9 AND month_unique=1105)
expected result should be 4 , i get 1. If i manually put in
SELECT count(*) FROM feeds WHERE feedID IN (1,2,3,4)
for instance i get 4
querying
SELECT feeds FROM month_totals WHERE customerID=9 AND month_unique=1105
gives me 1,2,3,4 , what seems to be the problem ?
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