Index: ChangeLog
===================================================================
--- ChangeLog	(revision 852)
+++ ChangeLog	(working copy)
@@ -8,6 +8,7 @@
     applications, in order to work around a bug in ADO. (Bug #13776)
 
   Bugs fixed:
+  * SQLGetInfo() reported that UNION was not supported. (Bug #32253)
   * The wrong result was returned by SQLGetData() when the data was an
     empty string and a zero-sized buffer was specified. (Bug #30958)
 
Index: driver/info.c
===================================================================
--- driver/info.c	(revision 844)
+++ driver/info.c	(working copy)
@@ -288,12 +288,16 @@
   case SQL_SUBQUERIES:
   case SQL_TIMEDATE_ADD_INTERVALS:
   case SQL_TIMEDATE_DIFF_INTERVALS:
-  case SQL_UNION:
   case SQL_LOCK_TYPES:
     *((SQLUINTEGER *)rgbInfoValue)= 0L;
     *pcbInfoValue= sizeof(SQLUINTEGER);
     break;
 
+  case SQL_UNION:
+    *((SQLUINTEGER *)rgbInfoValue)= (SQL_U_UNION | SQL_U_UNION_ALL);
+    *pcbInfoValue= sizeof(SQLUINTEGER);
+    break;
+
     /* Un limit, set to default..*/
   case SQL_MAX_ASYNC_CONCURRENT_STATEMENTS:
   case SQL_MAX_BINARY_LITERAL_LEN: