能够产生的可供选择的执行计划的数量取决于计划空间(Plan Space)的大小限制和SQL语句的语法。计划空间的大小限制了查询优化器能够产生的可供选择的执行计划的数量。
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parallel query execution plan space 并行查询执行计划空间
Plan 9 from Outer Space 九号行星外层空间计划 ; 号太空秘令 ; 外太空计划 ; 外星第九号计划
Green space plan 绿地规划
general space plan [航] 综合空间计划
Light Open Plan Living Space 搞笑最多的
Urban green space system plan 城市绿地系统规划
plan from outer space 外太空大阴谋
space exploration plan 太空探索计划
The lower-level apartment is an open-plan space with a kitchen, a wood stove and glass doors opening up to a patio.
低层公寓为开放式空间,设有一间厨房和一个柴炉,其玻璃门通向一座露台。
This is achieved by situating the main living areas in an open-plan space at one end of the building, with the bedrooms at the other.
这是通过在小屋的尽端设置了开放式的空间并且定位为主要生活区域来实现的,相反,卧室则布置在小屋的另一端。
The living and dining areas are part of a bright open-plan space with windows on three sides and a brick fireplace in the living area.
起居和用餐区位于一片采光充裕的开放式空间内,三面有窗,起居区设有一座砖砌壁炉。
But Americans were hopeful. If the plan succeeded, it would be the greatest space act since manned flights began.
VOA: special.2009.06.24
The plan is for Orion to provide astronauts with a spacecraft that can link with the International Space Station.
VOA: special.2010.04.28
Next year, the Chinese plan to launch a small space laboratory to practice docking of spacecraft in orbit.
VOA: special.2010.04.28
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