# cubrid_unbuffered_query

(PECL CUBRID >= 8.3.0)

cubrid_unbuffered_query — Perform a query without fetching the results into memory

### 说明

cubrid_unbuffered_query(string `$query`, resource `$conn_identifier` = ?): resource

This function performs a query without waiting for that all query results have been complete. It will return when the results are being generated.

### 参数

`query`
  A SQL query.
`conn_identifier`
  The CUBRID connection. If the connection identifier is not specified, the last connection opened by cubrid_connect() is assumed.

### 返回值

For SELECT, SHOW, DESCRIBE or EXPLAIN statements returns a request identifier resource on success.

For other type of SQL statements, UPDATE, DELETE, DROP, etc, returns `true` on success.

`false` on failure.

### 示例

示例 #1 cubrid_unbuffered_query() example

`<?php
$link = cubrid_connect("localhost", 30000, "demodb", "dba", "");
if (!$link)
{
die('Could not connect.');
}
$query = "select * from code";
$result = cubrid_unbuffered_query($query, $link);
while ($row = cubrid_fetch($result))
{
var_dump($row);
}
cubrid_close_request($result);
cubrid_disconnect($link);
?>`

### 注释

> 注意: The benefits of cubrid_unbuffered_query() come at a cost: you cannot use cubrid_num_rows() and cubrid_data_seek() on a result set returned from cubrid_unbuffered_query().

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