diff --git a/sql_server/pyodbc/compiler.py b/sql_server/pyodbc/compiler.py
index 8f70cd69..def2e13e 100644
--- a/sql_server/pyodbc/compiler.py
+++ b/sql_server/pyodbc/compiler.py
@@ -241,7 +241,8 @@ def as_sql(self, with_limits=True, with_col_aliases=False):
 
             # SQL Server requires the backend-specific emulation (2008 or earlier)
             # or an offset clause (2012 or newer) for offsetting
-            if do_offset:
+            # Additionally support "limit" for queries that use UNION, EXCEPT
+            if do_offset or (combinator and high_mark):
                 if do_offset_emulation:
                     # Construct the final SQL clause, using the initial select SQL
                     # obtained above.