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/*-------------------------------------------------------------------------
*
* explain.h
* prototypes for explain.c
*
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994-5, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/commands/explain.h,v 1.31 2007/05/25 17:54:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef EXPLAIN_H
#define EXPLAIN_H
#include "executor/executor.h"
/* Hook for plugins to get control in ExplainOneQuery() */
typedef void (*ExplainOneQuery_hook_type) (Query *query,
ExplainStmt *stmt,
const char *queryString,
ParamListInfo params,
TupOutputState *tstate);
extern DLLIMPORT ExplainOneQuery_hook_type ExplainOneQuery_hook;
/* Hook for plugins to get control in explain_get_index_name() */
typedef const char * (*explain_get_index_name_hook_type) (Oid indexId);
extern DLLIMPORT explain_get_index_name_hook_type explain_get_index_name_hook;
extern void ExplainQuery(ExplainStmt *stmt, const char *queryString,
ParamListInfo params, DestReceiver *dest);
extern TupleDesc ExplainResultDesc(ExplainStmt *stmt);
extern void ExplainOneUtility(Node *utilityStmt, ExplainStmt *stmt,
const char *queryString,
ParamListInfo params,
TupOutputState *tstate);
extern void ExplainOnePlan(PlannedStmt *plannedstmt, ParamListInfo params,
ExplainStmt *stmt, TupOutputState *tstate);
#endif /* EXPLAIN_H */
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