15.10 - PrioritizePreparedCollect - Teradata Database

Teradata Database Application Programming Reference

prodname
Teradata Database
vrm_release
15.10
category
Programming Reference
featnum
B035-1090-151K

Changes the submission order of an individual collection within a prepared commands list.

REPLACE PROCEDURE TDSTATS.PrioritizePreparedCollect
  (IN RequestID    BIGINT,
   IN Priority     INTEGER,
   OUT NumUpdated  INTEGER)
           .
           .
           .
;
 

Parameter

Description

RequestID

TDSTATS database unique ID for an individual prepared collection.

Note: This input parameter cannot be NULL.

Priority

Changed priority of the specified collection expressed as a relative rank among other collections in the commands list containing RequestID.

Note: This input parameter cannot be NULL.

You can call the SelectPreparedCollects external stored procedure to determine the priority of other collections in the same commands list.

The modified priority is only relevant to the commands list containing the specified collection as identified by RequestID. Future invocations of PrepCollect will not incorporate the modified priority.

If two or more collections have the same priority within a commands list, the submission order among them is undefined.

 

Parameter

Description

NumUpdated

Possible values:

  • 1 means the operation was successful.
  • 0 means the operation failed.
  • The following example shows how to change the priority of pending collection number from 12 to 1 (that is, one being the highest priority).

    CALL TDSTATS.PrioritizePreparedCollect(12, 1, NumUpdated);
     
    *** Procedure has been executed. 
    *** Total elapsed time was 1 second.
     
     NumUpdated
    -----------
              1
     

    For more information on ...

    See ...

    the priority of other collections in the commands list

    “SelectPreparedCollects” on page 590.

    preparing a prioritize list of COLLECT STATISITICS statements

    “PrepCollect” on page 546.