SQL执行预扫描行数请教 #2341
qingfengJava
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SQL执行预扫描行数请教
#2341
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想请教一下这里SQL执行前检测的预扫描行数的逻辑是什么,很多是有检测的行数比实际执行的行数要多
![image](https://private-user-images.githubusercontent.com/97382270/276850291-1198ee9b-1a38-42b6-958c-ac0eca5b4cbc.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.hYMopVGLND2sA52RdbsLixQlqjN70RbIsuCr_wQ-zA8)
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