MDB_Common::queryOne()

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

Synopsis

      require_once 'MDB.php';

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

Description

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.

Parameter

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

Throws

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.

Note

This function can not be called statically.

See

query() , limitQuery() , prepareQuery() , executeQuery() , queryRow() , queryCol() , queryCol()


MDB_Common::queryCol()	MDB_Common::queryRow()

MDB

PEAR Manual


MDB_Common::queryCol()	MDB_Common::queryRow()

MDB

PEAR Manual