Created attachment 182833 [details] Embedded Firebird, no Macros Register the attached database. Drag queries "qGroup_T_List_P" and "qGroup_P_List_T" into the sheet. The concatenated field gets #NA! errors instead of strings. An ordinary aggregation query with Count, Sum, Min, Max etc. works as expected.
P.S. I get the correct strings into the sheet when I right-click>Copy the top-left corner in the data source window's record set and paste into sheet. However, this gives a copy instead of a link.
Could confirm the buggy behavior. You won't need to register database, only drag from database to Calc-sheet. One hint: If you change List( "Things"."Name" ) "Tool" to CAST( List( "Things"."Name" ) AS VARCHAR ( 8000 ) ) "Tool"