TD_ColumnSummary Example | ColumnSummary - Example: How to Use TD_ColumnSummary - Analytics Database

Database Analytic Functions

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-04-06
dita:mapPath
gjn1627595495337.ditamap
dita:ditavalPath
ayr1485454803741.ditaval
dita:id
jmh1512506877710
Product Category
Teradata Vantageā„¢

Every complete example in this document is available in a zip file that you can download. The zip file includes a SQL script file that creates the input tables for the examples. If you are reading this document on https://docs.teradata.com/, you can download the zip file from the attachment in the left sidebar.

TD_ColumnSummary InputTable: col_titanic_train

passenger survived pclass name                                 gender age  sibsp parch ticket fare      cabin       embarked 
--------- -------- ------ ------------------------------------ ------ ---- ----- ----- ------ ----      -----       --------
        49        0      3 Samaan; Mr. Youssef                  male   null     2     0 2662   21.679	 null        C       
        78        0      3 Moutal; Mr. Rahamin Haim             male   null     0     0 374746 8.05	 null        S       
       505        1      1 Maioni; Miss. Roberta                female   16     0     0 110152 8.65	 B79         S       
       631        1      1 Barkworth; Mr. Algernon Henry Wilson male     80     0     0 27042  30	 A23         S       
       873        0      1 Carlsson; Mr. Frans Olof             male     33     0     0 695    5	 B51 B53 B55 S

Example: Using Column Names in TD_ColumnSummary Call

SELECT * FROM TD_ColumnSummary (
  ON col_titanic_train AS InputTable
  USING
  TargetColumns ('age','pclass','embarked','cabin')
) AS dt;

Example: Using Column Range in TD_ColumnSummary Call

SELECT * FROM TD_ColumnSummary (
  ON col_titanic_train AS InputTable
  USING
  TargetColumns ('[10:11]')
) AS dt;

TD_ColumnSummary Output

ColumnName Datatype                        NonNullCount NullCount BlankCount ZeroCount PositiveCount NegativeCount NullPercentage NonNullPercentage 
--------- ------------- ------------- -------------- ----------------- 
 age        INTEGER                                    3         2       null         0             3             0      4.00E+001         6.00E+001
 cabin      VARCHAR(20) CHARACTER SET LATIN            3         2          0      null          null          null      4.00E+001         6.00E+001
 embarked   VARCHAR(20) CHARACTER SET LATIN            5         0          0      null          null          null       0.00E000         1.00E+002
 pclass     INTEGER                                    5         0       null         0             5             0       0.00E000         1.00E+002