# BASIC 256 - Language Documentation

en:dbnull

## DBNull

### Format

dbnull ( ColumnNumber )
dbnull ( DatabaseNumber , ColumnNumber )
dbnull ( DatabaseNumber , DataSetNumber , ColumnNumber )
dbnull ( ColumnName )
dbnull ( DatabaseNumber , ColumnName )
dbnull ( DatabaseNumber , DataSetNumber , ColumnName )

### Description

Return a true if the specified column number or name of the current row of the open recordset is a NULL vale. If the field contains a value a false will be returned.

### Example

See example of usage on DBOpen page.

### See Also

DBClose, DBCloseSet, DBExecute, DBFloat, DBInt, DBNull, DBOpen, DBOpenSet, DBRow, DBString. Freedb, Freedbset

### External Links

More information about databases in general and SQLite specifically can be found at SQLite Home Page and SQL at Wikipedia.

### History

0.9.9.23 - New

en/dbnull.txt · Last modified: 2012/12/19 15:40 by m_santos