DAX Help for Custom/Conditional Column

Dear @raghukumarch ,

I have implemented your scenario, Here's the few steps to achieve the required output.

Go to Home - > Transform Data 

Open the Query which contains the column C_SerialNumber.

Go to - > Add Column - > Custom Column

New Column Name: CheckColumn

Custom column formula: Text.Contains([C_SerialNumber],"-")

Now click on OK.

Now again click on  Add Column - > Custom Column

New Column Name: NewC_SerialNumber

Custom column formula: if [CheckColumn] = false then "0" & [C_SerialNumber] else [C_SerialNumber]

Now click on OK.

Now, check on the formula bar, if the type isn't set to text then write it in a way as below screen short and click on the tick.

Here's the desire output in a new column.

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