Check if query exists

Hi all,

I have a report with 2 elements in PowerQuery :

• A function returning a table ==> creating queries "Invoked Function", "Invoked Function (2)",  "Invoked Function (3)", etc.
• A query that appends all results of invoked functions

The query thus needs to check if every occurence of the invoked function exists, so I'm looking for a way to write :

queries = {"Invoked Function", "Invoked Function (2)", "Invoked Function (3)", ... , "Invoked Function (10)"},

if exists(#queries{i}) then A else B

Both steps can be done through List.Accumulate, but I can't find a way to test if the query exists.

I guess another similar would be : how to refer to a query from a string ? The following doesn't work :

my_string = "that_query",

source = #my_string          (#"that_query" does work)

Thanks !