Date columns

First step is to address how data is recorded on the source.  If that's not an option.

On powerquery create an if else statement for each case (maybe length of character as reference of condition) 

Similar to this

if Text.Length([DateRangeColumn])=9 then .... transformation

else if Text.Length([DateRangeColumn])=5 then .....

else .....

Hi Anonymous ,

I agree with Angelo's insights and have refined the code based on them, please try it:
StartDate

let 
length = Text.Length([Column1]),
vday = Text.BeforeDelimiter([Column1],"-"),
vmonth = Text.AfterDelimiter([Column1]," "),
vdate =  Text.BeforeDelimiter([Column1],"-"),
result =
if length = 5 then Date.AddDays(#date(1899,12,30),Number.FromText([Column1])) 
else if length = 9 then Date.FromText(vday&vmonth)
else if length = 15 then Date.FromText(vdate)
else null 
in 
result

EndDate

let 
length = Text.Length([Column1]),
vday = Text.BetweenDelimiters([Column1],"-"," "),
vmonth = Text.AfterDelimiter([Column1]," "),
vdate =  Text.AfterDelimiter([Column1],"-"),
result =
if length = 5 then Date.AddDays(#date(1899,12,30),Number.FromText([Column1])) 
else if length = 9 then Date.FromText(vday&vmonth)
else if length = 15 then Date.FromText(vdate)
else null 
in 
result

Best Regards,
Gao
Community Support Team

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