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Filename : parse_collate.h

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/*-------------------------------------------------------------------------
 *
 * parse_collate.h
 *	Routines for assigning collation information.
 *
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/parser/parse_collate.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_COLLATE_H
#define PARSE_COLLATE_H

#include "parser/parse_node.h"

extern void assign_query_collations(ParseState *pstate, Query *query);

extern void assign_list_collations(ParseState *pstate, List *exprs);

extern void assign_expr_collations(ParseState *pstate, Node *expr);

extern Oid	select_common_collation(ParseState *pstate, List *exprs, bool none_ok);

#endif   /* PARSE_COLLATE_H */