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If I have a table T with 4 rows & 2 columns A & B. A has
values 1,2,3,4. and B has 10,20,30,40. Write an Update SQL
query which can Swap the values of A & B for all records.
(Do not use a sub-query)

Question Posted / akj504

Answers were Sorted based on User's Feedback



If I have a table T with 4 rows & 2 columns A & B. A has values 1,2,3,4. and B has 10,20,30..

Answer / bunty

UPDATE T
SET A = B,B=A;

I am surprized but above query will fetch the desired
result.

Cheers,
Bunty

Is This Answer Correct ?    30 Yes 1 No

If I have a table T with 4 rows & 2 columns A & B. A has values 1,2,3,4. and B has 10,20,30..

Answer / avi007

select A as "B",B AS "A" from T;

Is This Answer Correct ?    1 Yes 2 No

If I have a table T with 4 rows & 2 columns A & B. A has values 1,2,3,4. and B has 10,20,30..

Answer / lova raju allumalla

update T set A=B,B=A where A in (select A from T);

Is This Answer Correct ?    1 Yes 2 No

If I have a table T with 4 rows & 2 columns A & B. A has values 1,2,3,4. and B has 10,20,30..

Answer / amit

UPDATE T
SET A = B, ENVDOR_NUMBERB = A

Is This Answer Correct ?    1 Yes 4 No

If I have a table T with 4 rows & 2 columns A & B. A has values 1,2,3,4. and B has 10,20,30..

Answer / preeti mishra

update T
set A:=A+B,
B:=A-B,
A:=A-B;

Is This Answer Correct ?    0 Yes 4 No

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