The row is returned as an array. Each result column is stored in an array offset, starting at offset 0. Arguments to the function is the result identifier and the field index, ie. The arguments are identical, but the field type is returned. This function takes no arguments.
Arguments are the database name and the table name.
A result identifier is a positive integer. The function returns -1 if a error occurs. If one is found, an identifier for it will be returned instead of opening a new connection. Second, the connection to the SQL server will not be closed when the execution of the script ends. This type of links is therefore called 'persistent'.