MDB_Common::queryOne() – fetch the first column of the first row


require_once 'MDB.php';

mixed &queryOne ( string $query , string $type = null )


Fetch the first column of the first row of data returned from a query. The function takes care of doing the query and freeing the results when finished.


string $query

the SQL query or the statement to prepare

string $type

if supplied, the type of the cell in the result set will be set for fetching

Return value

mixed - the returned value or a MDB_Error, if fail


Possible PEAR_Error values
Error code Error message Reason Solution
MDB_ERROR_NO_DB_SELECTED NULL No database was chosen. Check the DSN in connect() .
every other error code   Database specific error Check the database related section of PHP-Manual to detect the reason for this error. In the most cases a misformed SQL statement. Ie. using LIMIT in a SQL-Statement for an Oracle database.


This function can not be called statically.

Fetch a single column (Previous) fetch the first row (Next)
Last updated: Sat, 16 Feb 2019 — Download Documentation
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