2.10 - Examples of Using HELP FOREIGN - Teradata QueryGrid

Teradata® QueryGrid™ Installation and User Guide

prodname
Teradata QueryGrid
vrm_release
2.10
created_date
September 2019
category
Administration
Configuration
Installation
User Guide
featnum
B035-5991-099K

Example: Teradata to Presto HELP FOREIGN SERVER

The example fetches the schema (databases) from the catalog associated with the server.

help foreign server QG_Presto1;

Result:

Databases 
--------------------
default 
information_schema
finance
marketing

Example: Teradata to Presto HELP FOREIGN DATABASE

The example fetches the tables from the specified database.

help foreign database "default"@QG_Presto1;

Result:

Tables
---------------------
buses 
ca120453 
jing_part_tab1 
prama_part_tab1 
tbig_1row 
web_sales_part1_orc

Example: Teradata to Presto HELP FOREIGN TABLE

The example fetches the column information of the specified table.

HELP FOREIGN TABLE can be run with or without the database or schema name specified. When the database name is not provided in the query, the currently logged on database or the connector default is used.
help foreign table tbig_1row@QG_Presto1;

Result:

Column    | Type    | Comment
————-——-----+—————-----+————-
id        | bigint  | 
firstname | varchar | 
lastname  | varchar | 
gender    | varchar | 
age       | bigint  |

Example: Teradata to Teradata HELP FOREIGN FUNCTION

The example fetches information about the specified foreign function.

help foreign function syslib.MonitorQueryBand@td1 ;

Result:

            Parameter Name HostId
                     Type I2
                  Comment ?
                 Nullable Y
                   Format -(5)9
               Max Length             2
     Decimal Total Digits    ?
Decimal Fractional Digits    ?
              Table/View? F
                Char Type  ?
           Parameter Type I
                 UDT Name ?
Parameter Dictionary Name HostId
       Parameter SQL Name HostId
   Parameter Name UEscape ?
      UDT Dictionary Name ?
             UDT SQL Name ?
         UDT Name UEscape ?
            Inline Length             ?
           Parameter Name SessionNo
                     Type I
                  Comment ?
                 Nullable Y
                   Format -(10)9
               Max Length             4
     Decimal Total Digits    ?
Decimal Fractional Digits    ?
              Table/View? F
                Char Type  ?
           Parameter Type I
                 UDT Name ?
Parameter Dictionary Name SessionNo
       Parameter SQL Name SessionNo
   Parameter Name UEscape ?
      UDT Dictionary Name ?
             UDT SQL Name ?
         UDT Name UEscape ?
            Inline Length             ?
           Parameter Name RunVProcNo
                     Type I2
                  Comment ?
                 Nullable Y
                   Format -(5)9
               Max Length             2
     Decimal Total Digits    ?
Decimal Fractional Digits    ?
              Table/View? F
                Char Type  ?
           Parameter Type I
                 UDT Name ?
Parameter Dictionary Name RunVProcNo
       Parameter SQL Name RunVProcNo
   Parameter Name UEscape ?
      UDT Dictionary Name ?
             UDT SQL Name ?
         UDT Name UEscape ?
            Inline Length             ?
           Parameter Name RETURN0
                     Type CV
                  Comment ?
                 Nullable Y
                   Format X(12304)
               Max Length        24,608
     Decimal Total Digits    ?
Decimal Fractional Digits    ?
              Table/View? F
                Char Type  2
           Parameter Type O
                 UDT Name ?
Parameter Dictionary Name RETURN0
       Parameter SQL Name RETURN0
   Parameter Name UEscape ?
      UDT Dictionary Name ?
             UDT SQL Name ?
         UDT Name UEscape ?
            Inline Length             ?