DROP { STATISTICS | STATS | STAT }
FROM QCD_name
[ON] [ database_name. | user_name. ] table_name
[ COLUMN { { column_name | PARTITION } |
( { column_name | PARTITION } [,...] )
} |
INDEX { index_name | ( column_name [,...] ) }
] [;]
Syntax Elements
- FROM QCD_name
- Name of the QCD database from which statistics on the specified table columns and indexes are to be dropped from the TableStatistics table.
- database_name | user_name
- Name of the containing database or user for table_name if different from the current database or user.
- table_name
- Name of the table for which sampled column and index statistics are to be dropped.
- COLUMN column_name
- Set of non-indexed columns for which sampled statistics are to be dropped.
- You cannot drop statistics on a UDT column.
- COLUMN PARTITION
- Statistics are to be dropped on the system-derived PARTITION column for a table.
- You cannot reference the PARTITION#Ln columns of a table in a DROP STATISTICS request.
- For more information about the PARTITION column, see Collecting QCD Statistics on the PARTITION Column of a Table.
- INDEX index_name
- Name of the index for which sampled statistics are to be dropped.
- INDEX column_name
- Column set for which sampled statistics are to be dropped.