Counting the number of data points: count

Syntax

• Aggregate syntax

in a Data Set expression	count ( dataset { groupingClause } )
in a Component expression within an aggr clause	count ( component ) { groupingClause }
in a Data Set expression	count ( )

• Analytic syntax

in a Data Set expression	count ( dataset over( analyticClause ) )
in a Component expression within a calc clause	count ( component over( analyticClause ) )

Input parameters

dataset	the operand Data Set
component	the operand Component
groupingClause	see Aggregate invocation
analyticClause	see Analytic invocation

Semantics for scalar operations

This operator cannot be applied to scalar values.

Input parameters type

dataset

dataset

component

component

Result type

result

dataset { measure<integer> int_var }
| component<integer>

Additional Constraints

None.

Behaviour

The operator returns the number of the input Data Points. For other details, see Aggregate and Analytic invocations.

Examples

Given the operand dataset DS_1:

Input DS_1 (see structure)

Id_1	Id_2	Id_3	Me_1
2011	A	XX	iii
2011	A	YY	jjj
2011	B	YY	iii
2012	A	XX	kkk
2012	B	YY	iii

Example 1

DS_r := count ( DS_1 group by Id_1 );

results in (see structure):

DS_r

Id_1	int_var
2011	3
2012	2

Example 2

DS_r := count ( DS_1 group by Id_1 having count() > 2 );

results in (see structure):

DS_r

Id_1	int_var
2011	3