Which is more efficient group by or distinct to find duplicates?


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More Teradata Interview Questions

Hello Frndz, I have a table named product as shown below: product_id product_name 1 AAA 1 BBB 1 CCC 2 PPP 2 QQQ 2 RRR Now my output should be: product_id product_name_1 product_name_2 product_name_3 1 AAA BBB CCC 2 PPP QQQ RRR

4 Answers   Cap Gemini,


Explain the term 'tables' related to relational database management system?

0 Answers  


what is a multi statement request in TD? what is the diif b/w V2R5 & TD12? what is the diff b/w MACRO & STORED PROCEDURE?

3 Answers   HCL,


What is a common data source for the central enterprise data warehouse?

1 Answers   Wipro,


Hi All, I have a table with 3 fields like id,mark1,mark2 and I would like to update a mark3 field that would calculate the max for each record (so the max value of the 2 fields) in Teradata ID Mark1 Mark2 Mark3 1 10 20 2 20 30 3 40 10 4 50 50 I Have to write a update statement Mark3 with max value of mark1,mark2 fields…like bellow ID Mark1 Mark2 Mark3 1 10 20 20 2 20 30 30 3 40 10 40 4 50 50 50 Please any one help me ....Thq

3 Answers   Wipro,






How to run the Teradata jobs in unix environment ???

4 Answers   IBM,


What are the functions of a teradata dba?

0 Answers  


Explain some differences between mpp and smp?

0 Answers  


What is the diffrence between Multiload & Fastload interms of Performance?

8 Answers   Cap Gemini, Intel,


Can we have two time dimensions in a schema(either star or snow flake)? For ex if we want joining date of employee and if we want today's sales with time whether can we have two time dimensions for accommodating above tasks?

0 Answers   IBM,


What is meant by a Highest Cost Plan?

0 Answers  


I have a table with emp id, emp name, dept id and sal where dept id is NUSI. SEL * FROM EMP WHERE DEPTID = 100. Can any one explain how it will fetch the record.

4 Answers  


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