mssql_fetch_batch

(PHP 4 >= 4.0.4, PHP 5, PECL odbtp >= 1.1.1)

mssql_fetch_batch Restituisce il successivo gruppo di record

Descrizione

int mssql_fetch_batch ( resoure $indice_risultato )
Avviso

Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

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User Contributed Notes 4 notes

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1
salvarez at jetmultimedia dot es
24 days ago
If you are doing more than one mssql_query(), you must do a mssql_free_result() to avoid undesirable results of mssql_fetch_batch()
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0
jeffreznik
1 year ago
I was having issues doing two different select queries with batch sizes in the same connection.  The first one would run fine, the second one would always return one batch + 1 record (ie. batch size on the 2nd query was 250000 records, it would stop after 250001 and say it was complete even though there should have been 3m+ records).

I was able to overcome this by disconnecting from the DB (via mssql_close($conn);) and reconnecting before I ran the second query.  Now my second query returns all the records I need.

Though I would write this here as there is little to no documentation on this issue, and it may only be affecting me.  I am connecting from Linux (RHEL5) to SQL Server 2005 on the network, using FreeTDS.  If you have this same issue, try the above and it may work for you.
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0
doug dot pe at gmail dot com
1 year ago
This demonstrates the return value:
<?php
$connect
= mssql_connect("databasename", "username", "password");
$sql = "SELECT * FROM huge_table";    //    returns 3271 rows, for example
$qry = mssql_query($SQL, $connect, 1000); // 1000 Rows batchsize
$batchsize = mssql_num_rows($qry);
print
"$batchsize <br />\r\n";
do {
   
$batchsize = mssql_fetch_batch($qry);
    print
"$batchsize <br />\r\n";
} while (
$batchsize);  // get the next batch until end
?>
returns:
1000
1000
1000
271
0
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0
brutalex430
3 years ago
This could be usefull if you have a large dataset:

<?php
$qry
= mssql_query("SELECT * FROM huge_table", $conn, 1000); // 1000 Rows batchsize

   
do {
      while (
$row = mssql_fetch_row($qry)) {
         
// do something like
         
print_r($row);
      }
    } while (
mssql_fetch_batch($navqry));  // get the next batch until end

?>
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