17.10 - Example: Setting an Alternate Constraint Value - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Advanced SQL Engine Security Administration

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Administration
Security
Publication ID
B035-1100-171K
Language
English (United States)

You can provide an alternate constraint value in the SQL statement. For example:

MERGE INTO table1 AS tgt USING table2 AS src
   ON (tgt.col1 = src.col1) WHEN MATCHED THEN UPDATE SET Level = 2;

where SET Level = 2 sets the security constraint column “Level” to a value of 2 for all updated rows.

You can alternately specify:

  • That a value is taken from another column. For example:
    SET Level = src.column_name ;
  • Values for multiple constraint columns. For example:
    SET Level = 2, Class = 4, Job = 7, ... ;