EXPORT_STATISTICS_PARTITION

Generates partition-level statistics in XML format from data previously collected by ANALYZE_STATISTICS_PARTITION.

This is a meta-function. You must call meta-functions in a top-level SELECT statement.

Behavior type

Syntax

EXPORT_STATISTICS_PARTITION ('[ filename ]', 'table-spec', 'min-range-value','max-range-value' [, 'column[,...]' )

Arguments

*filename*

Specifies where to write the generated XML. If filename already exists, EXPORT_STATISTICS_PARTITION overwrites it. If you supply an empty string, the function writes to standard output.

table-spec

Specifies the table on which to export partition statistics:

  
[[database.]schema.]table
  

The default schema is public. If you specify a database, it must be the current database.

min-range-value, max-range-value

The minimum and maximum value of partition keys on which to export statistics, where min-range-value must be ≤ max-range-value.

Important

The range of keys to export must be equal to, or a superset of, the full range of partitions previously analyzed by ANALYZE_STATISTICS_PARTITION. If the range omits any analyzed partition, EXPORT_STATISTICS_PARTITION exports no statistics.

*column*

The name of a column in table, typically a predicate column. You can specify multiple comma-delimited columns. Vertica narrows the scope of exported statistics to the specified columns.

Privileges

Superuser

Restrictions

EXPORT_STATISTICS_PARTITION does not export statistics for LONG data type columns.

See also