docs.datacontroller.io/docs/tables/mpe_derived.md

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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
• 🔑 VAR_NM char(32): The name of the derived column
• VAR_ORDER num: Evaluation order; a variable may reference one with a lower order
• VAR_TYPE char(1): C for character, N for numeric
• VAR_LEN num: Character length, or numeric length (1-8)
• VAR_FMT char(32): Optional SAS format, eg DATE9.
• VAR_LOGIC char(4000): The SAS expression that produces the value
• ACTIVE num: Set to 1 to apply the variable