Return the correct declared column type, origin column name, origin database

name, etc. from aggregate queries.  Ticket #1726 and #1755. (CVS 3169)

FossilOrigin-Name: e64809f0ae98ce9d152cf030cae72bf3df3e2403

src/select.c

@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle SELECT statements in SQLite.
 **
-** $Id: select.c,v 1.310 2006/03/26 01:21:23 drh Exp $
+** $Id: select.c,v 1.311 2006/04/07 13:50:37 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -805,6 +805,7 @@ static const char *columnType(
   assert( pExpr->op!=TK_AS );
 
   switch( pExpr->op ){
+    case TK_AGG_COLUMN:
     case TK_COLUMN: {
       /* The expression is a column. Locate the table the column is being
       ** extracted from in NameContext.pSrcList. This table may be real