(PHP 4 >= 4.0.6)
mysql_unbuffered_query -- Send an SQL query to MySQL, without fetching and buffering the
result rows
Description
resource mysql_unbuffered_query (string query [, resource
link_identifier])
mysql_unbuffered_query() sends a SQL query query to MySQL, without
fetching and buffering the result rows automatically, as
mysql_query() does. On the one hand, this saves a considerable amount of memory with SQL
queries that produce large result sets. On the other hand, you can start working on the result set
immediately after the first row has been retrieved: you don't have to wait until the complete SQL
query has been performed. When using multiple DB-connects, you have to specify the optional
parameter link_identifier.
Note: The benefits of mysql_unbuffered_query() come at a cost: You cannot use mysql_num_rows() on a result set returned from
mysql_unbuffered_query(). You also have to fetch all result rows from an unbuffered SQL query,
before you can send a new SQL query to MySQL.
See also: mysql_query().
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