SHOW STATS#

Synopsis#

SHOW STATS FOR table
SHOW STATS FOR ( query )

Description#

Returns approximated statistics for the named table or for the results of a query. Returns NULL for any statistics that are not populated or unavailable on the data source.

Statistics are returned as a row for each column, plus a summary row for the table (identifiable by a NULL value for column_name). The following table lists the returned columns and what statistics they represent. Any additional statistics collected on the data source, other than those listed here, are not included.

Statistics#

Column

Description

Notes

column_name

The name of the column

NULL in the table summary row

data_size

The total size in bytes of all the values in the column

NULL in the table summary row. Available for columns of string data types with variable widths.

distinct_values_count

The estimated number of distinct values in the column

NULL in the table summary row

nulls_fractions

The portion of the values in the column that are NULL

NULL in the table summary row.

row_count

The estimated number of rows in the table

NULL in column statistic rows

low_value

The lowest value found in this column

NULL in the table summary row. Available for columns of DATE, integer, floating-point, and exact numeric data types.

high_value

The highest value found in this column

NULL in the table summary row. Available for columns of DATE, integer, floating-point, and exact numeric data types.