string $query: the SQL query
string $type: if supplied, the type of the column in the result set will be set for fetching
array $params: if supplied, prepareQuery()/ executeQuery() will be used with this array as execute parameters
array $param_types: if supplied, the values in $param will automatically set to the passed datatypes
mixed $colnum: which column to return (integer [column number, starting at 0] or string [column name])

Return value

array - the first row of results as an array indexed from 0 or a MDB_Error, if fail

Throws

Table 21-1. Possible PEAR_Error values

Error code	Error message	Reason	Solution
`MDB_ERROR_INVALID`	`NULL`	SQL statment for preparing is not valid.	See the prepareQuery() documentation, if you want to use a SQL statemt using wildcards.
`MDB_ERROR_NEED_MORE_DATA`	`NULL`	To less data for filling the prepared SQL statment.	Check the number of wild cards given in the SQL statment prepareQuery() . Check the count of entries in the array for `$params`. The count of entries have to be equal to the number of wild cards.
`MDB_ERROR_NO_DB_SELECTED`	`NULL`	No database was choosen.	Check the DSN in connect() .
`MDB_ERROR_TRUNCATED`	`NULL`	The result set contains fewer then two columns	Check the SQL query or choose another *get()** function
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.

This function can not be called statically.

query() , limitQuery() , prepareQuery() , executeQuery() , getRow() , getOne() , getAssoc()

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