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.
the SQL query or the statement to prepare
if supplied, the type of the cell in the result set will be set for fetching
mixed - the returned value or a MDB_Error, if fail
Table 39-1. 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.|