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Operators

Here is list of operators that can be used in expressions in EasyMorph.

Basic operators

Operator	Description	Result
+	Addition	Number
-	Subtraction	Number
*	Multiplication	Number
/	Division	Number
&	Text concatenation	Text
>	Greater than	Boolean
>=	Greater than or equal	Boolean
<	Less than	Boolean
<=	Less than or equal	Boolean
=	Equal	Boolean
!=	Not equal	Boolean
<>	Not equal	Boolean
and	Logical AND	Boolean
or	Logical OR	Boolean
not	Logical NOT	Boolean

Examples of operators in expressions:

1 + 2

(10 + 5 ) * 3

'Easy' & 'Morph'

[Amount] > 1000

([Amount] > 1000 and [Quantity] > 1) or [Quantity]>10

The IF..THEN..ELSE operator

This operator can be used to perform conditional calculations. It has the following syntax:

IF condition THEN expression ELSE expression

A shorter form where the ELSE expression is omitted and always returns an empty value, is also possible:

IF condition THEN expression

Note that unlike the if() function, in the IF operator the "then" expression is only evaluated when the condition is TRUE. The "else" expression in this case is not evaluated (i.e. ignored). Vice verse, if the condition is FALSE, then the "then" expression is ignored, and only the "else" expression is evaluated.

Examples:

 IF [Amount] > 1000 THEN 'Large order' ELSE 'Small order'

 IF [Year] = year(today()) THEN [Amount] ELSE 0

 IF [Qty] = 0 THEN 0 ELSE [Amount] / [Qty]   // Doesn't fail when [Qty] = 0

The LET operator

The LET operator allows simplifying expressions by declaring repetitive parts as local constants which can later be used instead of the repetitive parts. The operator has the following syntax:

LET local_constant = expression

Once a local constant is declared, it can be used in the expression(s) that follow the declaration. Example:

 LET d = day(today())
 IF d=1 THEN 'First day' ELSE 'Day: ' & d