Interested to Buy Any Domain ? << Click Here >> for more details...
1) In a dataset how to delete a single row?
2) i have 50 rows , i want to display 5-7 records only?
How to write the sql query?
3)i have 40 rows,i want to display last row? write sql query?
- 7 Answers
- 19591 Views
- Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / segu satish
answer for 3rd question:
select * from emp where rowid =(select max(rowid) from emp)
| Is This Answer Correct ? | 13 Yes | 1 No |
1) using external filter we use command is sed we get
2)select * from (select rownum rno,emp.* from emp)
where rno in(5,6,7)
or
select * from (select rownum rno,emp.* from emp)
where rno between 5 and 7
or
select * from emp where rownum<8
minus
select * from emp where rownum<5
in first two are very efiiciency compare to third one
because in third iam using set operator
3)select * from emp where rowid=(select max(rowid) from emp);
| Is This Answer Correct ? | 11 Yes | 0 No |
Answer / reddy obul
__for 2nd question answer is:
select * from table where rowid<8 minus select * from table
where rowid<5
__for 3rd quesion answer is:
select * from emp where rowid in(select max(rowid) from emp)
| Is This Answer Correct ? | 9 Yes | 9 No |
Answer / sarath
for 2nd:
select * from table where rownum<8 minus select * from table where rownum<5;
| Is This Answer Correct ? | 4 Yes | 4 No |
Answer / ravi
1 answere : we can use @rownum =1 and reject the first record....
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / subbu
2nd answer:
select * from(select rowid from tablename where rowid between 5 and 7);
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / ritesh chatterjee
Answer to Qust 1
Sed 1d "Dataset Name" from unix by this way you can delete
1st record from dataset,in place of 1 you can place any number.
Answer to Question 2
select * from tablename
where rowid between 2 and 7;
Answer to 3rd qus:-
select * from tablename
where rownum = 40;
| Is This Answer Correct ? | 0 Yes | 3 No |
What is oci?
what is the main differences between Lookup, Join and Merge stages?
Can you explain engine tier in information server?
Explain briefly scd type2 in datastage7.5x2(parallel)
in sequtial file 2 columns avaliable, i want only one column load the target. for this we can do by modify and copy stage. But here when using modify stage (in property drop column1) until it is ok. if target is data set How to view the data. with out using data management. what is the reason for this. if any body know this answer plz tel me. thanks.
What are operators in datastage?
Is it possible to implement parallelism in Mainframe Jobs ? If Yes how ? If no why ?
what is stage is used for below Input columns: dept|mgr|employee|salary Output columns: mgr|count of employee per mgr|avg salary per dept note: each dept has one mgr and each mgr has many employees
diff between changecapture & diffrence stage which situvation we can use the diffrence stage ?
Converting Vertical PIVOTing without using PIVOT stage in DataStage. Ex: DEPT_NO EMPNAME 10 Subhash 10 Suresh 10 sravs Output: DEPT_NO EMP1 EMP2 EMP3 10 subhash suresh sravs 2) How to implement Horizontal PIVOTing without using PIVOT stage.
what is the diff b/w switch and filter stage in datastage
What is the process of killing a job in datastage?
Teradata 
