IS expression

Returns 1 if a is the same as b.

Syntax

a IS b

Arguments

None

Example

 'A' IS 'A'  → returns 1 
 'A' IS 'a'  → returns 0 
 4 IS 4      → returns 1 
 4 IS 2+2    → returns 1 
 4 IS 2      → returns 0 
 $geometry IS NULL  → returns 0, if your geometry is not NULL