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
- 18912 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 are the different type of jobs in datastage?
How one source columns or rows to be loaded in to two different tables?
what is the difference between the active datawarehouse and datawarehouse
SOURCE LIKE I_D,F1,F2 --------- 100,N,Y 100,N,N 100,Y,N 101,Y,Y 101,N,Y 102,Y,N 103,N,N 104,Y,Y 105,N,N 106,N,Y 102,N,Y 105,Y,Y O/P LIKE ID flag1 flag2 101 Y Y 101 N Y 102 Y N 102 N Y 104 Y Y 106 N Y
client know skid info?
What is the function in Transformer stage can act as Rank Function in oracle
how can we generate row values like 1 1 1 2 2 2 3 3 3 using col generator plz let me know
How many nodes supported by a one cpu in parallel jobs?
How to read multiple files using a single datastage job if files have the same metadata?
what is ds administrator used for?
What is container and then types?
explain how to create SCD-2 IN DATASTAGE 7.5X2 PLZ EXPLAIN WITH 4 OR 5 RECORDS TAKE IT EXAMPLE AND JOB DESINGN URGENT
Teradata 
