COVAR_SAMP Function Example | Teradata Vantage - Example: Using the SELECT statement to Return the Sample Covariance of Weight and Height - Advanced SQL Engine - Teradata Database

SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-30
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tpt1555966086716.ditamap
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dita:id
B035-1145
lifecycle
previous
Product Category
Teradata Vantageā„¢

This example is based on the following regrtbl data. Nulls are indicated by the QUESTION MARK character.

c1 height weight
1 60 84
2 62 95
3 64 140
4 66 155
5 68 119
6 70 175
7 72 145
8 74 197
9 76 150
10 76 ?
11 ? 150
12 ? ?

The following SELECT statement returns the sample covariance of weight and height where neither weight nor height is null.

   SELECT COVAR_SAMP(weight,height) 
   FROM regrtbl;

   Covar_Samp(weight,height)
   -------------------------
                         150