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i have oracle table A and target B. i don't know how many
records. i want get get last record in table A as first record
in target table B. write a sql query?
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Answer / devi
CREATE TABLE B
AS
SELECT * FROM A
ORDER BY ROWNUM DESC;
| Is This Answer Correct ? | 26 Yes | 4 No |
Answer / priyank
In Informatica, make table A as Source and follow the below
mapping:
SRC_A --> AGG --> TGT_B
AGG: Do not check any of the columns for group by and pass
the output to target B. In this way, only the last row will
be passed through.
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / upendra
select * from (select rownum as num,a.* from A a) where num=(select count(*) from A);
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / upendra
In Informatica mapping we can find source A last record into Target B first record.
SRC-->Rank--> TGT
note:rank transformation edit propertities tab assign bottom=1
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / dilip ingole
by using with clause
WITH DATA AS(SELECT NUM,ROWNUM RN ,COUNT(1)OVER() CNT FROM A)
SELECT NUM,RN FROM DATA WHERE RN=1
UNION
SELECT NUM,RN FROM DATA WHERE RN=CNT;
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / pooja
CREATE TABLE B
AS
SELECT *
FROM
(SELECT *
FROM
(SELECT *,ROWNUM R
FROM A)
ORDER BY R DESC)
WHERE R=1;
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / mr lee
Select * From Table A Where ROWID = (Select Max(ROWID) From
Table A
Union
Select * From Table B Where Rownum = 1
| Is This Answer Correct ? | 0 Yes | 1 No |
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Teradata 
