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plan: estimate ndv more precisely. #4797

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merged 2 commits into from Oct 17, 2017

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@hanfei1991
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hanfei1991 commented Oct 17, 2017

fix #4796

@hanfei1991 hanfei1991 added this to Cost Based Optimizer in Planner Oct 17, 2017

@hanfei1991 hanfei1991 added this to the 1.1 milestone Oct 17, 2017

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hanfei1991 commented Oct 17, 2017

@lamxTyler PTAL

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shenli Oct 17, 2017

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LGTM

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shenli commented Oct 17, 2017

LGTM

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shenli approved these changes Oct 17, 2017

@hanfei1991 hanfei1991 merged commit e9949b4 into master Oct 17, 2017

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@hanfei1991 hanfei1991 deleted the hanfei/ndv branch Oct 17, 2017

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