getting unexpected errors

[mikeST]

a minute ago

Afternoon all, hope you can help out.  I am tring to compare two text fields in a column on two different tables and then return a text field value and write it in a column on the first table:  Example:

'Table 1'[system_id] =
IF (
DISTINCT('Table 1'[UIC]) = DISTINCT('Table 2'[UIC]),
DISTINCT('Table 2'[system_id]),
BLANK()
)

Error I keep getting is as follows:

DAX:

EVALUATE

'Table 1'[system_id] =
IF (
DISTINCT('Table 1'[UIC]) = DISTINCT('Table 2'[UIC]),
DISTINCT('Table 2'[system_id]),
BLANK()
)

Correlation Id: e07dcf4e-1ad3-9181-2a01-5666123aa645
Error Details: The end of the input was reached.

Can someone provide guidance?

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[Greg_Deckler]

@mikeST DISTINCT returns a table and you can't return a table as a column or measure result. I'm not sure but I *think* you want something like this:

New Column in Table1 = 
  VAR __ID = [SYSTEM_ID]
  VAR __UIC = [UIC]
  VAR __OtherUIC = MAXX( FILTER( 'Table2', [SYSTEM_ID] = __ID ), [UIC] )
  VAR __Result = IF( __UIC = __OtherUIC, __OtherUIC, BLANK() )
RETURN
  __Result