Historical_to

Overview

Historical_to is a join historization type used in the transformation editor for joined tables.

Function

Historical_to joins the row from the joined table that was actual at the main table's date_to.

Access

This join historization type is available in the transformation detail page for the JoinHistType field of joined tables.

How to access

Navigation tree

Transformations -> open a transformation -> Definition tab

Toolbar

Not confirmed.

Diagram

Not applicable.

Visual element

Transformation tables grid -> JoinHistType

Screen overview

The Historical_to join historization type is selected in the DetailTransformations page, in the transformation tables grid under the JoinHistType column.

IDPropertyDescription
1Definition tabThe join historization type is configured in the transformation definition area.
2Transformation tables gridLists the source and joined tables that participate in the transformation.
3JoinHistTypeDropdown column used to select the join historization type for each joined table.
4Historical_toSelects the row from the joined table that was actual at the main table's date_to.
5Runtime join conditionAt runtime, JoinHistTypeID = 5 compares the main table's date_to against the joined table history interval.
6Default assignmentThis type is not auto-assigned in the row-creation switch. For transformation historization type 5 and the default branch, the code sets JoinHistTypeID to 1, so Historical_to must be selected explicitly.

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