Vertica Analytics Platform Version 9.2.x Documentation
SUMMARIZE_NUMCOL
Returns a statistical summary of columns in a Vertica table:
- Count
- Mean
- Standard deviation
- Min/max values
- Percentile information
- Median
All summary values are FLOAT data types, except INTEGER for count.
Syntax
SUMMARIZE_NUMCOL (input‑columns [ USING PARAMETERS exclude_columns='excluded‑columns'] ) OVER()
Arguments
| input‑columns |
Comma-separated list of columns to use from the input relation, or asterisk (*) to select all columns. All columns must be a numeric data type. If you select all columns, |
Parameter Settings
| Parameter name | Set to… |
|---|---|
exclude_columns
|
Comma-separated list of column names from input‑columns to exclude from processing. |
Examples
Show the statistical summary for the age and salary columns in the employee table:
=> SELECT SUMMARIZE_NUMCOL(* USING PARAMETERS exclude_columns='id,name,gender,title') OVER() FROM employee; COLUMN | COUNT | MEAN | STDDEV | MIN | PERC25 | MEDIAN | PERC75 | MAX ---------------+-------+------------+------------------+---------+---------+---------+-----------+-------- age | 5 | 63.4 | 19.3209730603818 | 44 | 45 | 67 | 71 | 90 salary | 5 | 3456.76 | 1756.78754300285 | 1234.56 | 2345.67 | 3456.78 | 4567.89 | 5678.9 (2 rows)
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