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Interesting quirk for unrelated field reference in field definition

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https://fmforums.com/blogs/entry/1444-interesting-quirk-for-unrelated-field-reference-in-field-definition/

By David Jondreau

· 1,238 views

One apparent limitation of using ExSQL() in the separation model is that you can’t use unrelated tables in a field definition. So you’d need to related all your tables to one another.

I just discovered that you can bypass that limitation simply by wrapping your statement in a Let() and declaring a variable that includes wrapping a field in the GetFieldName() function.

So the expression:
Let( field = unrelated::table ; field )
returns an error.

However,
Let( gfn = GetFieldName ( unrelated::table ) ; field = unrelated::table ; field )
does not.

It doesn’t even have to be a field from an unrelated table. Interesting and hopefully helpful.


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    https://fmforums.com/blogs/entry/1444-interesting-quirk-for-unrelated-field-reference-in-field-definition/

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