Exists | EXISTS
Syntax
EXISTS( [input] )
Parameters
input
Any data may be used as the input.
Return Value
FALSE if the INPUT is UNDEFINED or not set, otherwise TRUE.Description
Determine if a value is defined.Examples
EXISTS(UNDEFINED) # returns FALSE
EXISTS(NULL) # returns TRUE
# ${somevar} is not set
EXISTS(${somevar}) # returns FALSE
EXISTS(0) # returns TRUE
EXISTS("") # returns TRUE