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Version: current [24.3.x]

IS__NOT__NULL

Categories: Boolean, Datatype

IS [NOT] NULL

Determines if an expression is NULL or not NULL. Alias for the function ISNULL/ISNOTNULL.

Syntax

IS [NOT] NULL(expression any) → boolean

  • expression: Expression of any Dremio supported data type to evaluate.

Examples

ISNULL function returns true if expression is NULL, and false otherwise.
SELECT ISNULL('dremio')
-- False
ISNULL operator returns true if expression is NULL, and false otherwise.
SELECT 'dremio' IS NULL
-- False

IS [NOT] NULL(expression any) → boolean

  • expression: Expression of any Dremio supported data type to evaluate.

Examples

ISNOTNULL function returns true if expression is not NULL, and false otherwise.
SELECT ISNOTNULL('dremio')
-- True
ISNOTNULL operator returns true if expression is not NULL, and false otherwise.
SELECT 'dremio' IS NOT NULL
-- False