BTEQ Features in Teradata

 

BTEQ Features

• It is utility, which import and export data from multiple tables to multiple files
• It does not run in phases, it runs according to the system process
• It is not an automatic Restart table, it supports arithmetic, mathematical, etc. expression
• It supports conditional programming branching arid looping
• It performs error handily but not error capturing
• It supports select, insert, delete etc all operations[DDL,DML DCL etc]
• It load duplicate record also even the table is having SI, RI, etc
• It does not bother about the connotations, indexes, and triggers, etc. on the tables.
• It supports formatting and reporting commands etc

Working with BTEQ Interactive Mode

Minimize the window

Right-click on the window properties

Save properties for future windows with the same title

LOGON 127.0.0.1/Vinaya[Enter key press]

Password: Vinayaka[Press on entering key]

Select * From Dept;

O S<OPERATING SYSTEM COMMAND>

• Ex: CLEARING THE SCREEN
• WINDOWS.OS CLS
• UNIX.OS Clear

Remark ’Vinay Here’[Remark is like ’c’ language primt]

SHOW ControlTo see current settings

Setting some properties.

A). SET STDETITLES ON

• Select * FROM PARTY:
• Pid  1   pnm   Vinay
• Pid  2   pnm   Madhu
• .SET SIDETIZES OFF

B). SET FOLDLINE ON

• SELECT*FROM PARTY;
• Pid  Pname
• 1    Vinay
• 2   Madhu
• SET FOLDLINE OFF

C). SET WIDTH 300;

D). SET HEADING’ This is tera data class’

E). SET FOOTING data warehousing

• Technologies’
• (one line continuation to another line is-)

Inclined to build a profession as Teradata Developer? Then here is the blog post on, explore Teradata Training

F). SET PAGE LENGTH 25;

G).SET page break ON;

Changing the mode from BTET TO ANSI

• .LOGOFF
• .SET SESSION TRANSACTION ANSI
• .LOGON 127.0.0.1/ VINAYAKA
• Password: Vinay

SHOW. VersionsTo see the current version of various components in Teradata

Working with ANSI

A) Select *From dept;

COMMIT;

B)INSERT INTO DEPT VALUES(100,’ marketing’) ;

COMMIT;

C)BEGIN TRANSACTION[press enter key]

[IT Should fail because ANSI Doesn’t support]

Working with Transactions in BTET

1. Change To BTET
2. Begin Transaction OR BT

Select*From Dept;

---5 Rows

Insert into dept values (100,’marke’);

Select* From Dept;

--6 Rows

Delete From kkk;

--Failed Due To NO Table name kkk

Select* From Dept;

--5Rows

[Because the last statement failed, Transaction failed and the] previous statement are Rollback)

Note

MAX Selectable Rows are one million

MAX Selectable Columns are 2048

MAX Selectable session is 200

BTEQ COMMAND

BTEQ Command Classified in the below 4 types:

a)Session control commands

ABORT, EXTI, Halt EXECUTION, LOGON, LOGOFF, QUIT, Session, charset, session transaction, show versions, etc.

b)File formatting commands

ERROR OUT, EXPORT, HALT EXECUTION, IMPORT, INDIA DATA, OS, QUIET, Repeat, run, etc.

c)Sequence control commands

Abort, error level, Exit, GO TO, quite, IF Then, Label, etc

d)Format control commands

Side titles, fold line, Footing, Heading, etc.

Note:

Refer to the material for all those command  explanations

BTEQ IMPORTANT STRUCTURE And export structure

Exporting

.Export Data file=”<Filename>”, limit =n DD=<DD Name>

INDICATE

REPORT

DIFF

LARGE DATA

RESET

IMPORTING

.Importing DATA FILE =”< FILE NAME>” SKIP=N

DD=<DD Name>

INDICDATA

REPORT

VARTEXT’D’

DDelimiter or separator

Export Reset

It Reverses the effect of the previous export command and closes the output on the console/*system apply read lock while loading the data, it releases the locks on target table*/

Ex - Exporting the data in data node[First example in the Browser]

.LOGON 127.0.0.1/Vinayaka, Vinay;

.Export data file=”c:Data-Logparty –Data.TXT”

Select party id as a party – id, party name as a party- income, jdate, organization As a party – loc, party income as a party –income,

From party

.Export reset

.LOGOFF

StartRUNàCMDàBTEQ<C:BTEQExport.Data.Txt

C:Data.LogExportlog.txt

Export the data in variable text format[Common delimiter]

IN The above script Do the below statement changes

Replace the mode data to report

Replace the above statement with the below statement select

CAST(party id As Varchar(10)//’,’//

CAST(party name As Varchar(30)//’,’//

CAST(party Loc As Varchar(30)//’,’//

From party

EXPORTING THE DATA IN FIXED TEXT FORMAT

IN the above script do the below changes

a)Change data to report mode

b)Change the SQL Query to below way

Export Report file =”c:Data-logparty-Repari . txt”, limit=2; Select

CAST(party id As Char(10)//

CAST(party name As Char(30)//

CAST(party Loc As Char(30)//

From party;

EXPORTING THE DATA WITH ETL LOGIL[SECOND SCRIPT IN THE PROJECT]

.LOGON 127.0.0//DBC,DBC;

.SET WIDTH 400;

Database vinayaka;

.Export report file=”c:Data- logparty- Report.Txt” Select

Party Id As party id

CAST(Party name//’-’//party Loc As varchar(17))As Address,

Coast sce(Party income,99999)As income,

CASE

When party income<=30000 then ‘poor’>

WHEN PARTY INCOME<=50000 And party income>30000 Then ‘Avg’ else ’Good’

End AS RATING,

CAST (JNATS As Date)(Format’dd-mm-yyyy’)

AS JDate

CAST(CURRENT- Date AS Varchar(10)As Business- Date,

Sub STR(Organization,I,3)As org-short From party;

.Export Reset /* system apply the Read lock while loading the data, it realize

.LOGOFF

Teradata Interview Questions

IMPORTING THE DATA IN THE DATA MODE

3^rd Script in the project

RUN File c:btEQConn.txt;

Database Vinayaka;

.Import Data File=”C:Data logparty-Data.txt”;

.QUIET ON;/*we want reduce Lock size, only error, and processing information

.Repeat*;/*iteration one my one like for loop*/

Using

I-PID(Integer),

I-PNM(Varchar(30)),

I-Ploc(Varchar (30)),

I-PINS(Integer),

I- JDate(Date),

I-org(Varchar(30))

INSERT INTO party (party id, party name, party Loc, party income, JDate, orgam zation)Vlues(:I-PNM:I-PLOC,:I-PINC,I-Jdate:I-org);

.IF error code<>o Then .Quit:

.LOGOFF

Conn.txt

.Logon 127.0.0.1/DBC, DBC;

Coon.txt:

It is a configuration file, that is user define and  configuration settings[user id, password, variables, data base name, etc..]

Note

In the above script, conn.txt is a configuration file

 This file is useful when we are moving the script from development to testing, testing to production, etc…

 The i/p file should be in data mode[we can not create data file manually]

Importing the data with ETL LOGIC

4^TH SCRIPT IN THE PROJECT

/*.RUN File c:BTEQCONN.TXT;*/

.Logon 127.0.0.1/DBC,DBC;

Database vinayaka;

.Import vartext’,’File= “c:BTEQ Data-Vartext.TXT”,sktp=1;

.Quiet on;

.Repeat *;

Using

I- org(Varchar(30),)

I- NUM(Varchar(30),)

I- EName(Varchar(30),)

I- LName(Varchar(30),)

I- MName(Varchar(30),)

I- PLOC(Varchar(30),)

I- PCD(Varchar(30),)

I-JDate (Varchar(30),)

I- PINC(Varchar(30),)

Insert into party2(party id, partyname, email, party code, jdate, party income, party income-INC, Source- system-ID)

Values(:I-org//’-’//: I-NUM,:I-FNAME//:I –WAME//:I-M Name,

‘Tera data vinay @yahoo. co. in’,/*:I-F Name//’gmail.com*/

:I-PCD’

CAST(:I-J data is data)(format ’yy-mm-dd’.)

: I-PINC,

: I-PINC*12/100,

41000/* TO Identify which source system loading the data warehouse*/

.IF ERROR CODE<>0 THEN SELECT error encountered

.Quiet 16;

Select ‘No error’;

.Logoff

WORKING WITH CONDITIONAL PROGRAMMING[SIMPLE BRANCHING AND LOADING]

.Logon 127.0.0.1/DBC,DBC;

Database Vinayaka;

Select*From party;

.IF Error code=o THEN .GOTO Vinay LBL

.Remark ‘No table existed’,

.Label vinay LBL

.IF Activity count>5 Then. Remark

‘Table existed and contained more than 5 Rows’,

.IF Activity count<=5 Then. Remark’ No of rows is less than or equal to five’;

.Logoff

Only BTEQ We do this conditional programming

For In-depth knowledge on Teradata click on:

• Secondary Index in TeraData
• Memory Management in TeraData
• Types of OLAP’s in TeraData
• TPUMP Structure and Process In TeraData
• Teradata Parallel Transporter