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Categories / MSSQL Tutorial / System Tables Views
 

Resolving base datatypes from User Defined Datatypes

3> 4> 5>      SELECT    t1.name, t2.name 6>      FROM      systypes t1 JOIN systypes t2 7>                ON t1.type = t2.type 8>      WHERE     t1.usertype >= 100 9>      AND       t2.usertype < 100 10>     AND       t2.usertype NOT IN (18,80) 11> GO name                                                                                                                             name -------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------- --------------------------------------------------------- id                                                                                                                               sql_variant id                                                                                                                               varchar id                                                                                                                               nvarchar (3 rows affected) 1>