M if text contains, if not empty

[modwonka]

Hi,

I'm trying to improve one formula i did in M, to extract a date between brackets but i don't know how to advance. If anyone could help me, i would really appreciate it.

This is the formula:

let l=List.Transform( Text.Split([#"Tags (created on)"]," "), each Text.Remove(_,{"(",")",","})),
i=List.PositionOf(l, "BLUETEXT")
in l{i+1} & " " & l{i+2}

The formula is ok, but if in the column doesn't has "BLUETEXT" the formula extract the first text, no the text inside the bracket. 

How can i create a if there's not BLUETEXT leave empty? 

thanks! 

[Vijay_A_Verma]

I think should work for you in last line

if i>=0 then l{i+1} & " " & l{i+2} else null

[modwonka]

Thanks for your answer Vijay_A_Verma!

I tried the solution with your code:

let l=List.Transform( Text.Split([#"Tags (created on)"]," "), each Text.Remove(_,{"(",")",","})),
i=List.PositionOf(l, "BLUETEXT"),
if i>=0 then l{i+1} & " " & l{i+2} else null

There's one error: "Token identifier expected". In the "if". Is this ok?

[Vijay_A_Verma · Accepted solution]

in was missing

let l=List.Transform( Text.Split([#"Tags (created on)"]," "), each Text.Remove(_,{"(",")",","})),
i=List.PositionOf(l, "BLUETEXT")
in if i>=0 then l{i+1} & " " & l{i+2} else null

[modwonka]

Hi Vijay_A_Verma,

just one last thing, in case you can help again with this 😉 

As you know, if the formula does not find BLUETEXT it puts "null". If it finds "BLUETEXT", it extracts a date from inside the parenthesis.

The issue is that I would like to compare this column with a new one with the same formula. Date vs date. And get the smaller one and select it. But with the null that formula is broken.... how can I fix it?

[modwonka]

Thank you so much! That worked 😉