mssql_fetch_batch

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

mssql_fetch_batch — Returns the next batch of records

Warning

This function was REMOVED in PHP 7.0.0.

说明

mssql_fetch_batch ( resource $result ) : int

Returns the next batch of records.

参数

result: The result resource that is being evaluated. This result comes from a call to mssql_query().

返回值

Returns the number of rows in the returned batch.

范例

Example #1 mssql_fetch_batch() example


<?php
// Connect to MSSQL and select the database
$link = mssql_connect('MANGO\SQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php', $link);

// Send a query
$result = mssql_query('SELECT * FROM [php].[dbo].[people]', $link, 100);
$records = 10;

while ($records >= 0) {
    while ($row = mssql_fetch_assoc($result)) {
        // Do stuff ...
    }

    --$records;
}

if ($batchsize = mssql_fetch_batch($result)) {
    // $batchsize is the number of records left 
    // in the result, but not shown above
}
?>

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User Contributed Notes 4 notes

down

salvarez at jetmultimedia dot es ¶

5 years 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()

down

jeffreznik ¶

6 years 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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doug dot pe at gmail dot com ¶

6 years 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

down

brutalex430 ¶

8 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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官方地址：https://www.php.net/manual/en/function.mssql-fetch-batch.php

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mssql_fetch_batch

说明

参数

返回值

范例

User Contributed Notes 4 notes