ApproveStat Stored Procedure | Application Programming Reference | Vantage - 17.10 - ApproveStat - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Application Programming Reference

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1090-171K
Language
English (United States)

Marks an Analyzer missing statistic recommendation as being user approved making it eligible for future automated collections.

Syntax

REPLACE PROCEDURE TDSTATS.ApproveStat (
  IN SCOID BIGINT,
  IN DatabaseName VARCHAR(128) CHARACTER SET UNICODE,
  IN TableName VARCHAR(128) CHARACTER SET UNICODE,
  IN ObjectListName VARCHAR(128) CHARACTER SET UNICODE,
  OUT NumApproved INTEGER
)
  ...
;

Syntax Elements

SCOID
TDSTATS ID for a missing statistics recommendation from an Analyze-related operation or an existing statistic copied from an Automate-related operation.
DatabaseName
Name of the database. DatabaseName approves all statistics defined on the database you specify.
TableName
Name of the table within the specified DatabaseName. TableName limits the approval to the statistics defined on the table you specify within DatabaseName.
ObjectListName
Name of the object list. ObjectListName allows you to specify a previously defined list of objects (that is, one or more database names or fully qualified table names where each name entry may optionally contain wildcard characters) whose statistics should be approved.
For more information about this input parameter, see the usage notes or CreateObjectList.
NumApproved
Number of approved statistics that were previously unapproved.

Usage Notes

Depending on how Analyze-related external stored procedures are called, any:
  • Resulting recommendations for new statistics may remain unapproved until ApproveStat is performed on them.
  • Existing statistics copied to the TDSTATS database may also remain unapproved until ApproveStat is performed on them.
To determine which recommended missing statistics are still marked unapproved after an Analyzer-related operation, you can call the following external stored procedures:
  • AnalyzeStatsReport
  • AnalyzeStatsUsageReport
  • SelectAutomatedStats and examine the ApprovedStat result column.
To determine which imported statistics are still marked unapproved after an Automate-related operation, you can call the following external stored procedures:
  • AutomateReport
  • SelectAutomatedStats

Approving Statistics Recommendations

If you do not specify a value for the following input parameters, the operation is performed on all user created databases in the system.
To approve ... You must specify a value for ...
a single statistic recommendation SCOID.
When specifying a value for SCOID, you do not need to specify a value for DatabaseName or TableName.
all statistics recommendations for a particular database DatabaseName.
all statistics recommendations for a particular table both DatabaseName and TableName.
a list of objects that cannot be specified by DatabaseName or TableName

ObjectListName that was previously created by the CreateObjectList and AddObjectListEntry external stored procedures.

ObjectListName usage is mutually exclusive with DatabaseName and TableName . When you specify a value other than NULL for ObjectListName , DatabaseName and TableName must be NULL.

Example: Using ApproveStat

The following example shows how to approve all unapproved statistic recommendations on the Employee table.

CALL TDSTATS.ApproveStat(NULL,'Personnel','Employee',NULL, NumApproved);
*** Procedure has been executed.
*** Total elapsed time was 1 second.
NumApproved
-----------
          1