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183037c4d3
New Configuration page explaining derived (computed) variables: what they are, how to configure them in MPE_DERIVED, how filtering works, the rules and limits (expressions only, self-contained, read-only, not stored), and the data-exposure and performance notes. New MPE_DERIVED table page, registered in the Table Guide nav.
1.2 KiB
1.2 KiB
layout, title, description
| layout | title | description |
|---|---|---|
| article | MPE_DERIVED | The MPE_DERIVED table is used to configure computed columns that appear in the EDIT screen and can be filtered on without being stored in the table. |
MPE_DERIVED
The MPE_DERIVED table is used to configure derived (computed) variables - columns that are created when a table is loaded into the EDIT screen, so that they can be displayed and filtered on without being stored. More details are available in the user guide
The table is itself registered in MPE_TABLES, so it is maintained through the EDIT screen with the usual review and approve workflow.
Columns
TX_FROM num: SCD2 open datetime- 🔑
TX_TO num: SCD2 close datetime - 🔑
LIBREF char(8): The libref of the target table - 🔑
DSN char(32): The target table - 🔑
VARIABLE_NM char(32): The name of the derived column VARIABLE_TYPE char(1):Cfor character,Nfor numericVARIABLE_LENGTH num: Character length, or numeric length (1-8)VARIABLE_FORMAT char(32): Optional SAS format, egDATE9.VARIABLE_LOGIC char(4000): The SAS expression that produces the valueACTIVE num: Set to 1 to apply the variable