Merge pull request #2199 from Budibase/fix/relationship-issue-2167

Fix for SQL relationship issue

packages/builder/src/pages/builder/app/[application]/data/datasource/[selectedDatasource]/CreateEditRelationship/CreateEditRelationship.svelte

@@ -158,10 +158,16 @@
         fieldName: fromTable.primary[0],
       }
     } else {
+      // the relateFrom.fieldName should remain the same, as it is the foreignKey in the other
+      // table, this is due to the way that budibase represents relationships, the fieldName in a
+      // link column schema is the column linked to (FK in this case). The foreignKey column is
+      // essentially what is linked to in the from table, this is unique to SQL as this isn't a feature
+      // of Budibase internal tables.
+      // Essentially this means the fieldName is what we are linking to in the other table, and the
+      // foreignKey is what is linking out of the current table.
       relateFrom = {
         ...relateFrom,
-        foreignKey: relateFrom.fieldName,
+        foreignKey: fromTable.primary[0],
-        fieldName: fromTable.primary[0],
       }
       relateTo = {
         ...relateTo,