16.10 - VARCHAR ARRAY Tables - Parallel Transporter

Teradata Parallel Transporter Reference

Product
Parallel Transporter
Release Number
16.10
Published
July 2017
Content Type
Programming Reference
Publication ID
B035-2436-077K
Language
English (United States)

Target, error, and work table names can be specified in terms of VARCHAR ARRAY types if specifying more than one table, using the following syntax:

   VARCHAR TargetTable = ['table1', 'table2', ..., 'tableN']
Using the ARRAY keyword in assigning an array value is optional.

You cannot specify more error or work tables than there are target tables defined, but you may specify fewer. If fewer error/work table names are defined than target tables, the Update operator creates a name for the error/work table:

  • The first error table is ttnameN_ET
  • The second error table is ttnameN_UV
  • The work table is ttnameN_WT, where ttnameN is the name of the corresponding target table
    Target table names are truncated to the maximum number of characters for table names on the Teradata Database minus 3 characters before the suffixes "_ET", "_UV", or "_WT" are appended to target table names.

For example, if the following is specified when no other error/work table specifications exist,

  VARCHAR TargetTable = ['targtable1', 'targtable2', 'thirdtable']

the Update operator creates the following error tables and work tables:

   targtable1_ET
   targtable1_UV
   targtable1_WT
   targtable2_ET
   targtable2_UV
   targtable2_WT
   thirdtable_ET
   thirdtable_UV
   thirdtable_WT

Note that each set of two error tables and one work table belong to a particular target table; the naming convention preserves the uniqueness of the associated target table.

If you specify the following, the Update operator creates the necessary missing table names:

   VARCHAR TargetTable = ['ttname1','ttname2','ttname3']
   VARCHAR ErrorTable1 = ['error_1']
   VARCHAR ErrorTable2 = ['error_2']
   VARCHAR WorkTable = ['work_1','work_2']

If you specify more error table names or work table names than there are target table names, the Update operator issues an error message and terminates the job.