DENULLIFY

Syntax

DENULLIFY(<any>; <any>)

Description

Converts null values (represented by ω) to non-null default values. All non-null values are left untouched.

Integer null values are converted to 0 (zero), float values are converted to 0.0, string null values are converted to empty strings, Boolean values are converted to false, and null date values are converted to Jan 1, 1970 12:00:00 AM.

An additional argument can be entered into DENULLIFY as a default replacement to null values.

Examples

Example 1

=DENULLIFY(#Column1)

Data field type	Column1	DENULLIFY returns

Data field type	Column1	DENULLIFY returns
Integer	1	1
Integer	null (ω)	0
Integer	3	3
Float	1.1	1.1
Float	null (ω)	0.0
Float	2.2	2.2
Date	Sep 19, 2008 11:13:27 AM	Sep, 19 2008 11:13:27 AM
Date	null (ω)	Jan, 01 1970 12:00:00 AM
Date	Nov, 25 2010 11:56:13 AM	Nov, 25 2010 11:56:13 AM
String	"test1"	“test1"
String	null (ω)	"" (an empty string)
String	"test3"	"test3"
Boolean	true	true
Boolean	null (ω)	false
Boolean	false	false
List (as of Datameer v5.2)	null	[ ] (empty list)
List (as of Datameer v5.2)	[1,2,3]	[1,2,3]

Example 2

=DENULLIFY(#Column1;"123456789")

Data Field Type	Column1	Returns

Data Field Type	Column1	Returns
Integer	null (ω)	123456789