mysql限制结果？

Question

I have a table with approximatly 1000 records.

I have a request :

$select = "SELECT * FROM ophlm_ancien.patrimoine";
$result = mysql_query($select);
while($p = mysql_fetch_array($result)){
    //some actions
}

If a run my script, i have this error on firefox : The connection was reset

I a add a LIMIT 500, it work. LIMIT 600 too. But after i always have this error.

Do you have any ideas ?

Answer 1

增加服务器上的max_allowed_packet 。

Answer 2

Up to the documentation you can combine the LIMIT with an offset:

[LIMIT {[offset,] row_count | row_count OFFSET offset}]

Which lets you kind of buffer the results:

The LIMIT clause can be used to constrain the number of rows returned by the SELECT statement. LIMIT takes one or two numeric arguments, which must both be nonnegative integer constants (except when using prepared statements).

With two arguments, the first argument specifies the offset of the first row to return, and the second specifies the maximum number of rows to return.

All you need to do is to execute the selects in a loop and match the offset in each round until you get all results.