If row value null , previous value is to be considered .

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I have
Dt Dt_Mnt
1-jan 1-jan
2-feb NULL
3-march NULL
4-April 4-April
5-May NULL

I require below output :

Dt Dt_Mnt
1-jan 1-jan
2-feb 1-jan
3-march 1-jan
4-April 4-April
5-May 4-April

What I have tried:

As i'm new to the sql . Please advise . ( Other than LEAD , LAG)

Posted 7-May-18 1:41am

Joemens

Updated 7-May-18 3:29am

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MadMyche 7-May-18 10:59am

What is the code you are using

1 solution

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Kornfeld Eliyahu Peter · Answer 1 · 2018-05-07T03:31:00

Solution 1

Put your data in a temp table and add running number using ROW_NUMBER[^] function...
In case value is NULL run a inner-query to select value from previous row, based on the ROW_NUMBER value...

Posted 7-May-18 3:31am

Kornfeld Eliyahu Peter