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Introduction to Teradata Client Tools
Introduction to Teradata SQL
 OBJECTIVES :
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Teradata Product Components.
Accessing Teradata – Database / User
Teradata SQL Assistant
Teradata Administrator
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Teradata Database 12.0
Product Components
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Teradata User/Database Organization
DBC
Sys_Calendar
Spool_Reserve
SysAdmin
SystemFE
QCD
CrashDumps
To ensure space will
always be available
for spool ...
CREATE DATABASE Spool_Reserve
AS PERM = spool_amount ;
(The space used by Spool_Reserve
will reduce the total available
permanent space in the system by
20% to 25%.)
SYSDBA
Users
View, Macro, Temporary
and Stored
Table
Procedure
Databases
Databases
Database
(1)
Database
(1)
(2)
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Users and Databases
DBC
SYSDBA
Human_Resources
Personnel
PR01
PR02
Accounting
Benefits
PR03
BF01
BF02
BF03
You can grant CREATE DATABASE authority to any user.
The user may then create other users and databases from:
• The user’s own space, or
• The space of another user or database (if authorized).
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Start Teradata Service
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Run the Service Teradata Database Initiator
By Default this service is Manual in Demo.
You may need more Services to start based on the tools to explore.
This applies only for Demo CD
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Teradata SQL Assistant
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Teradata SQL Assistant
• Open the Teradata SQL Assistant.
• This is the interface to work with the Teradata SQL
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Connect to Database
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Configure Database Connection
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By Default the Demo installation configures DemoTDAT as ODBC connection.
Password can be saved in the connection as below. If left blank, it prompts on logon.
In real-time situation the Server info includes the Server IP address. Nodes’ IPs in case of MPP.
DBC is a super user and default password is DBC
• Leave the user/password blank.
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SQL Assistant – Different Windows
Explain each Window – Database Explorer Tree, Query Window, Answer Set Window, History Window
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Try this out
Where is my DUAL
 SELECT 100*2;
 SELECT DATE;
 SELECT 10/3.000;
Explore
 help user dbc;
 select * from users;
 help user financial;
 select * from Financial.accts;
 show table Financial.accts;
 help table Financial.accts;
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SQL Assistant – Tools - Options
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Default Database
Setting the Default Database
As a valid user, you will normally have access rights to your
own user database and the objects it contains. You may also
have permission to access objects in other databases.
The user name you logon with is usually your default
database. (This depends on how you were created as a user.)
Select Database; --- Gives the Current Database
Changing the Default Database
The DATABASE command is used to change your default
database.
For example:
DATABASE Financial;
sets your default database to Financial. Subsequent queries
(assuming the proper privileges are held) are made against
the Financial database.
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HELP Commands: Database objects
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The HELP Command is used to display information about database objects such as (but
not limited to):
Databases and Users
Tables
Views
Macros
HELP retrieves information about these objects from the Data Dictionary.
Below are the syntactical options for various forms of the HELP command:
HELP Command
HELP
HELP
HELP
HELP
HELP
HELP
HELP
HELP
HELP
HELP
HELP
DATABASE databasename;
USER username;
TABLE tablename;
VIEW viewname;
MACRO macroname;
COLUMN table or viewname.*; (all columns)
COLUMN table or viewname.colname . . ., colname;
INDEX tablename;
STATISTICS tablename;
CONSTRAINT constraintname;
JOIN INDEX join_indexname; HELP TRIGGER triggername;
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Lets Create an User for Self
Create a user for yourself. This user is used for all the exercises to be done
during the training.
CREATE USER TESTUSER
FROM DBC
AS
PASSWORD=TESTUSER
PERM=2000000
SPOOL=3000000
TEMPORARY = 1000000
DEFAULT DATABASE = TESTUSER
;
GRANT SELECT
ON DBC TO TESTUSER;
Log off & log on using TESTUSER
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Teradata SQL Extensions
 Here is a list of Teradata extensions
ADD_MONTHS
BEGIN/ END TRANSACTION
COLLECT/ DROP STATISTICS
COMMENT ON
CONCATENATION
EXPLAIN
FALLBACK
FORMAT
HELP
INDEX
LOCKING
MACRO Facility
• CREATE
• REPLACE
• DROP
• EXECUTE
NULLIFZERO/ZEROIFNULL
NAMED
SUBSTR
SHOW
TRIM
TITLE
WITH
WITH . . . BY
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Session Mode – Teradata / ANSI
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Teradata is ANSI Compliant.
SQL Assistant can be run on Teradata & ANSI modes.
Default options are different for Teradata & ANSI modes
Session mode can be changed using options while defining the
Teradata ODBC connection
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The HELP DATABASE Command
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The HELP DATABASE command shows all objects in the database specified.
HELP DATABASE FINANCIAL;
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Table/View/Macro name
accts
checking_acct
checking_tran
credit_acct
credit_tran
customer
Kind
T
T
T
T
T
T
Objects may be recognized by their 'Kind' designation as follows:
Table= T
View = V
Macro= M
Trigger= G
Join Index= J
Stored Procedure= P
The '?' is how BTEQ displays a null, indicating that no user comments have been entered.
Similarly other HELP functions can be used.
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The SHOW Command
The SHOW command displays the current Data Definition Language
(DDL) of a database object (e.g., Table, View, Macro, Trigger, Join
Index or Stored Procedure).
Sample Show Commands
Command
Return
SHOW TABLE tablename;
SHOW VIEW viewname;
CREATE TABLE statement
CREATE VIEW statement
SHOW MACRO macroname;
CREATE MACRO statement
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The SHOW TABLE Command
CREATE SET TABLE CUSTOMER_SERVICE.employee
,FALLBACK ,
NO BEFORE JOURNAL,
NO AFTER JOURNAL
(
employee_number INTEGER,
manager_employee_number INTEGER,
department_number INTEGER,
job_code INTEGER,
last_name CHAR(20) CHARACTER SET LATIN NOT CASESPECIFIC
NOT NULL,
first_name VARCHAR(30) CHARACTER SET LATIN NOT
CASESPECIFIC NOT NULL,
hire_date DATE NOT NULL,
birthdate DATE NOT NULL,
salary_amount DECIMAL(10,2) NOT NULL
)
UNIQUE PRIMARY INDEX ( employee_number );
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Test Default Options – Teradata Vs. ANSI
Database Financial;
CREATE TABLE TAB1
(
COL1 INTEGER,
COL2 CHAR(2)
);
SHOW TABLE TAB1;
CREATE SET TABLE FINANCIAL.TAB1 ,NO FALLBACK ,
NO BEFORE JOURNAL,
NO AFTER JOURNAL
(
COL1 INTEGER,
COL2 CHAR(2) CHARACTER SET LATIN NOT CASESPECIFIC)
PRIMARY INDEX ( COL1 );
/* Disconnect and connect again in ANSI mode*/
Database Financial;
CREATE TABLE FINANCIAL.TAB2
(
COL1 INTEGER,
COL2 CHAR(2)
);
SHOW TABLE TAB2;
CREATE MULTISET TABLE TAB2 ,NO FALLBACK ,
NO BEFORE JOURNAL,
NO AFTER JOURNAL
(
COL1 INTEGER,
COL2 CHAR(2) CHARACTER SET LATIN CASESPECIFIC)
PRIMARY INDEX ( COL1 );
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The SHOW VIEW Command
CREATE VIEW dept
(dept_num
,dept_name
,budget
,manager)
AS
SELECT department_number
,department_name
,budget_amount
,manager_employee_numberr
FROM CUSTOMER_SERVICE.department;
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The SHOW MACRO Command
CREATE MACRO get_depts
AS (SELECT department_number
,department_name
,budget_amount
,manager_employee_number
FROM department;);
To get Some Macros from DBC---select B.DatabaseName, A.TVMNAME
from DBC.TVM A,
dbc.dbase B
where A.tablekind = 'M'
and A.DatabaseId = B.DatabaseID
E.g:
show macro DBC.ResOneNode;
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Teradata Administrator
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Teradata Administrator
Open Teradata Administrator.
This tool is used to perform database administration tasks on the associated Teradata
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Teradata Administrator – View Objects
Its like a TOAD tool for Oracle.
It lists all the Objects in a selected Database/User.
The list view can be changed using Database Menu Option as below
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Teradata Administrator – Explore Objects
Different actions can be performed on a selected Object.
Explore options on a Table
- Row Count, Browse, Space etc….
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Teradata Administrator - Functions
Teradata Administrator provides an easy-to-use Windows-based
graphical interface to the Teradata RDBMS Data Dictionary. You may
use Teradata Administrator to perform the following functions:
•Create, Modify and Drop Users or Databases
•Create Tables (using ANSI or Teradata syntax)
•Grant or Revoke access/system rights
•Copy Table, View or Macro definitions to another
database, or to another system
•Drop or Rename Tables, Views or Macros
•Move space from one database to another
•Run an SQL query
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Exercise
•Exercise – Teradata SQL Assistant
•Exercise – Teradata Administrator
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Q/A
Thank You
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