MDB_Common::queryOne()
Описание
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.
Параметр
- 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
Throws
Таблица 35-1. Возможные значения PEAR_Error
| Error code | Error message | Reason | Solution |
|---|---|---|---|
| MDB_ERROR_NO_DB_SELECTED | NULL | No database was choosen. | 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 statment. Ie. using LIMIT in a SQL-Statment for an Oracle database. |
См. также
query() , limitQuery() , prepareQuery() , executeQuery() , queryRow() , queryCol() , queryCol()
| Пред. | Начало | След. |
| MDB_Common::queryCol() | Уровень выше | MDB_Common::queryRow() |