Stut wrote: > Jim Lucas wrote: >> afan pasalic wrote: >>> hi, >>> it's maybe more question for mysql list, but since php is involved >>> too... :-) >>> I have php script that inserts into mysql table couple hundreds of >>> records. >>> usually, it looks like: >>> <?php >>> // 1st record >>> $query = "INSERT INTO table (col_11, col_12, ... col_1n) VALUES >>> ($value_11, $value_12,... $value_1n )"; >>> mysql_query($query) or die ($mysql_error()); >>> >>> // 2nd record >>> $query = "INSERT INTO table (col_21, col_22, ... col_2n) VALUES >>> ($value_21, $value_22,... $value_2n )"; >>> mysql_query($query) or die ($mysql_error()); >>> >>> ... >>> // last record >>> $query = "INSERT INTO table (col_m1, col_m2, ... col_mn) VALUES >>> ($value_m1, $value_m2,... $value_mn )"; >>> mysql_query($query) or die ($mysql_error()); >>> >>> >>> It also works this way: >>> $query = "INSERT INTO table (col_m1, col_m2, ... col_mn) VALUES"; >>> $query .= "($value_m1, $value_m2,... $value_mn ), "; >>> $query .= "($value_21, $value_22,... $value_2n ), "; >>> ... >>> $query .= "($value_m1, $value_m2,... $value_mn )"; >>> mysql_query($query) or die ($mysql_error()); >>> >>> is what's the difference between these two queries? >>> is there any situations when is better to use first vs. second? >>> any suggestion for the process of inserting up to 5K records at the >>> time >>> or this number is so small to consider any "optimization"? >>> >>> thanks for any help. >>> >>> -afan >>> >> >> I would perform multiple inserts @ a time. This way you save >> yourself some time by not having mysql rebuild the indexes, if any >> exist, after each insert statement. > > Indeed, but bear in mind that there is a limit on the size of queries > MySQL will accept. Look up the MySQL max_packet_size for details. > > -Stut > I didn't find max_packet_size in my my.cnf, but found max_allowed_packet - that's the same, right? under [mysqld] max_allowed_packet = 1M shouldn't be 1M enough for the query?
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