greenplumn CGPOptimizer 源码
greenplumn CGPOptimizer 代码
文件路径：/src/include/gpopt/CGPOptimizer.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 Greenplum, Inc.
//
// @filename:
// CGPOptimizer.h
//
// @doc:
// Entry point to GP optimizer
//
// @test:
//
//
//---------------------------------------------------------------------------
#ifndef CGPOptimizer_H
#define CGPOptimizer_H
extern "C" {
#include "postgres.h"
#include "nodes/params.h"
#include "nodes/parsenodes.h"
#include "nodes/plannodes.h"
}
class CGPOptimizer
{
public:
// optimize given query using GP optimizer
static PlannedStmt *GPOPTOptimizedPlan(
Query *query,
bool *
had_unexpected_failure // output : set to true if optimizer unexpectedly failed to produce plan
);
// serialize planned statement into DXL
static char *SerializeDXLPlan(Query *query);
// gpopt initialize and terminate
static void InitGPOPT();
static void TerminateGPOPT();
};
extern "C" {
extern PlannedStmt *GPOPTOptimizedPlan(Query *query,
bool *had_unexpected_failure);
extern char *SerializeDXLPlan(Query *query);
extern void InitGPOPT();
extern void TerminateGPOPT();
}
#endif // CGPOptimizer_H
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦