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F# Nullable operators

Nullable operators are used to work with database queries. It handles null values which are stored in tables in place of data.

Nullable on left	Nullable on right	Both sides Nullable
?>	>?	?>?
?>=	>=?	?>=?
?<=	<=?	?<=?
?<	<?	?lt:?
?=	=?	?=?
?+	+?	?+?

You can apply nullable operators with all binary arithmetic and comparison operations.

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F# Operator Precedence

Operator	Associativity
as	right
when	right
|(pipe)	left
;	right
let	nonassociative
function,fun,match,try	nonassociative
if	nonassociative
->	right
:=	right
,	nonassociative
or, ||	left
&,&&	left
:>; , :?>;	right
!=op, <op, >op, =, |op, &op, & (including <<<, >>>, |||, &&&)	left
^op (including ^^^)	right
::	right
:?	non associative
-op, +op	applies to infix uses of these symbols
*op, /op, %op	left
**op	right
f x (function application)	left
| (pattern match)	right
prefix operators (+op, -op, %, %%, &, &&, !op, ~op)	left
.	left
f(x)	left
f<types>	left