Hi,
I have a requirement as below.
I just tried with Select + update ( inner query ) But the only challenge I am facing is how to fetch data for previous row. ie for n column 'B' is blank so get the data from n-1 'B' column and insert the same. Do we need to use the loops here? I am just afraid if we use the same it may hamper the performance of a query. Any suggestion please?
Source Table:
A B
ABC 100
ABC 200
DEF
ABC 600
GHI
MNO 900
Target Table:
A B
ABC 100
ABC 200
DEF 200
ABC 600
GHI 600
MNO 900
Br
Sumeet