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mysql 两张表关联查询问题
- WBOYOriginal
- 2016-06-06 09:38:451258browse
mysqlsql数据
现在有表A大概是百万级的数据，表B只有几千行，但是想在查询表A里剔除掉表B的数据，SELECT * FROM A WHERE NOT EXISTS (SELECT 1 FROM B WHERE B.id = A.id)，这种写法效率很低，请问有没有其他的解决方法？
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