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+/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+#ifndef SQL_UNION_INCLUDED
+#define SQL_UNION_INCLUDED
+
+class THD;
+class select_result;
+struct LEX;
+
+typedef class st_select_lex_unit SELECT_LEX_UNIT;
+
+bool mysql_union(THD *thd, LEX *lex, select_result *result,
+ SELECT_LEX_UNIT *unit, ulong setup_tables_done_option);
+
+
+#endif /* SQL_UNION_INCLUDED */