Equal to: =

Syntax

left = right

Input parameters

left	the left operand
right	the right operand

Examples of valid syntaxes

DS_1 = DS_2

Semantics for scalar operations

The operator returns TRUE if the left is equal to right, FALSE otherwise.

For example: | 5 = 9 gives: FALSE | 5 = 5 gives: TRUE | “hello” = “hi” gives: FALSE

Input parameters type

left, right

dataset {measure<scalar>}
| component<scalar>
| scalar

Result type

result

dataset { measure<boolean> bool_var }
| component<boolean>
| boolean

Additional Constraints

Operands left and right must be of the same scalar type

Behaviour

The operator has the typical behaviour of the “Operators changing the data type” (see the section “Typical behaviours of the ML Operators”).

Examples

Given the operand datasets DS_1:

Example 1

DS_r := DS_1 = 0.08;

results in (see structure):

DS_r

Id_1	Id_2	Id_3	Id_4	bool_var
2012	B	Total	Total
2012	G	Total	Total	False
2012	S	Total	Total	False
2012	M	Total	Total	False
2012	F	Total	Total	True
2012	W	Total	Total	True

Example 2

DS_r := DS_1 [ calc Me_2 := Me_1 = 0.08 ];

results in (see structure):

DS_r

Id_1	Id_2	Id_3	Id_4	Me_1	Me_2
2012	B	Total	Total
2012	G	Total	Total	0.286	False
2012	S	Total	Total	0.064	False
2012	M	Total	Total	0.043	False
2012	F	Total	Total	0.08	True
2012	W	Total	Total	0.08	True