dataset_row_count function

Category:

Database related

Statistical (aggregate)

Standard

Returns the current dataset row count (accumulating).

Syntax

dataset_row_count(
  StepNo Integer,
  GroupLevel Integer
): Integer

Parameters

StepNo specifies the step (pass) in which the function must be calculated. Possible values: 1 or 2. When it equals to 1, the corresponding function will be calculated immediately when the expression is processed. When it equals to 2, report will run in double-pass mode and the corresponding function will be calculated only in the second pass of the report processing, i.e. after the report dataset reaches the last record. Using database functions in the second pass is useful, for example, when it is needing to put the report totals in the report or group headers.

Combining different StepNo parameters in one expression (for example, database_field_val(1, 'total_sum') + database_field_val(2, 'payment_sum')) is possible, but such expression should be written so that functions with smaller StepNo will be calculated earlier.

GroupLevel specifies the aggregation group. It can have the following values:
1. Group of level 1;
2. Group of level 2;
3. Group of level 3;
0. Full report;
-1. Current page.

Return value

Type: Integer. Actually, inside the dataset rows loop, it returns the current row number. In the end of the loop, it returns the number of all rows in the dataset.

Examples of using

dataset_row_count(1, 0)