Description:
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Zend_Db: When executing stored procedure on SQL Server from loop, subsequent queries in loop return Zend_Db_Statement_Exception: SQLSTATE[HY000]: General error: 20019 Attempt to initiate a new SQL Server operation with results pending. [20019]

Current workaround is to reconnect after each loop iteration, which is expensive.

Reproduce code:
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$db = $this->getAdapter();
foreach($data as $k => $v){
    $sql = "EXECUTE sp_DoSomething {$db->quote($k)}, {$db->quote($v)}";
    $result = $db->query($sql)->fetchAll();
}

Expected result:
----------------
Successful execution of stored procedure during each loop iteration.

Actual result:
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First execution in loop succeeds, but subsequent executions return Zend_Db_Statement_Exception: SQLSTATE[HY000]: General error: 20019 Attempt to initiate a new SQL Server operation with results pending. [20019]