Try to use
SELECT ARRAY(SELECT t_data FROM THETABLE WHERE t_ref_id = '1') AS v;
In PHP you may fetch all matched values as a single string and then - use explode() to split it into values (possibly with later stripslashes).
It is much faster than fetching a thousands of rows.
SELECT ARRAY(SELECT t_data FROM THETABLE WHERE t_ref_id = '1') AS v;
In PHP you may fetch all matched values as a single string and then - use explode() to split it into values (possibly with later stripslashes).
It is much faster than fetching a thousands of rows.
On Thu, Aug 7, 2008 at 3:03 PM, 窦德厚(ddh) <doudehou@xxxxxxxxx> wrote:
Hi, if I have such a table:
t_ref_id t_data
--------------------
1 'abc'
2 '321'
1 'ddd'
2 'xyz'
9 '777'
...
I want to get data with a special t_ref_id:
SELECT t_data FROM THETABLE WHERE t_ref_id = '1';
I must use a while loop to extract the data (I'm using PHP):
$rows = array();
while (($row = pgsql_fetch_assoc($result) !== false) {
$rows[] = $row;
}
And if there are many matched rows, such as many hundreds or thousands of rows, I think such a loop maybe inefficient.
How to do this in a more efficient way?
Thank you!
--
ddh
