en:dbnull [BASIC 256 - Language Documentation]

# BASIC 256 - Language Documentation

en:dbnull

## DBNull (Function)

### Format

dbnull ( numeric_expr )
dbnull ( database_number , numeric_expr )
dbnull ( database_number , recordset_number , numeric_expr )
dbnull ( string_expr )
dbnull ( database_number , string_expr )
dbnull ( database_number , recordset_number , string_expr )

returns boolean_value

### 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 to Version

en/dbnull.txt · Last modified: 2014/02/08 12:21 by admin