Teradata - Create Tables
CREATE TABLE command is used to create tables in Teradata.
Syntax
Following is the generic syntax of CREATE TABLE statement.
CREATE <SET/MULTISET> TABLE <Tablename> <Table Options> <Column Definitions> <Index Definitions>;
Table Options − Specifies the physical attributes of the table such as Journal and Fallback.
Column Definition − Specifies the list of columns, data types and their attributes.
Index Definition − Additional indexing options such as Primary Index, Secondary Index and Partitioned Primary Index.
Example
The following example creates a table called employee with FALLBACK option. The table contains 5 columns with EmployeeNo as the Unique Primary Index.
CREATE SET TABLE EMPLOYEE,FALLBACK ( EmployeeNo INTEGER, FirstName VARCHAR(30), LastName VARCHAR(30), DOB DATE FORMAT 'YYYY-MM-DD', JoinedDate DATE FORMAT 'YYYY-MM-DD', DepartmentNo BYTEINT ) UNIQUE PRIMARY INDEX ( EmployeeNo );
Once the table is created, you can use SHOW TABLE command to view the Definition of the table.
SHOW TABLE Employee; *** Text of DDL statement returned. *** Total elapsed time was 1 second. ------------------------------------------------------------------------ CREATE SET TABLE EMPLOYEE ,FALLBACK , NO BEFORE JOURNAL, NO AFTER JOURNAL, CHECKSUM = DEFAULT, DEFAULT MERGEBLOCKRATIO ( EmployeeNo INTEGER, FirstName VARCHAR(30) CHARACTER SET LATIN NOT CASESPECIFIC, LastName VARCHAR(30) CHARACTER SET LATIN NOT CASESPECIFIC, DOB DATE FORMAT 'YYYY-MM-DD', JoinedDate DATE FORMAT 'YYYY-MM-DD', DepartmentNo BYTEINT ) UNIQUE PRIMARY INDEX ( EmployeeNo );