15.10 - Example: HELP COLUMN with a Derived Period Column - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

Teradata Database
Release Number
December 2015
English (United States)
Last Update

This is an example of HELP COLUMN output for the following table definition, which includes a derived period column.

     CREATE TABLE employee (
          eid INTEGER NOT NULL,
          name VARCHAR(100) NOT NULL,
          deptno INTEGER NOT NULL,
          jobstart DATE NOT NULL,
          jobend DATE NOT NULL,
          PERIOD FOR jobduration (jobstart, jobend)
          PRIMARY INDEX(eid);

Below is the HELP COLUMN output.

     HELP COLUMN employee.jobduration;
Column Name jobduration
Type PD
Nullable ?
Format ?
Max Length 0
Decimal Total Digits ?
Decimal Fractional Digits ?
Range Low ?
Range High ?
UpperCase ?
Table/View? T
Indexed? ?
Unique? ?
Primary? ?
Title ?
Column Constraint ?
Char Type ?
IdCol Type ?
UDT Name ?
Temporal Column N
Current ValidTime Unique ?
Sequenced ValidTime Unique ?
NonSequenced ValidTime Unique ?
Current TransactionTime Unique ?
Partitioning Column N
Column Partition Number 0
Column Partition Format NA
Column Partition AC NC
Security Constraint N
Derived_UDT PP
Derived_UDT_FieldID ?
Column Dictionary Name jobduration
Column SQL Name jobduration
Column Name UEscape ?
Dictionary Title ?
SQL Title ?
Title UEscape ?
UDT Database Dictionary Name ?
UDT Database SQL Name ?
UDT Database Name UEscape ?
UDT Dictionary Name ?
UDT SQL Name ?
UDT Name UEscape ?
Without Overlaps Unique ?
Storage Format ?