dump 表，包含四个字段 id, name, phone, status
INSERT INTO dump(id, name, phone, status)
SELECT 1, "test", "111", 2
FROM dump where not exists (select * from dump where name = "test" and status = 2)limit 1
请问上面这个语句正确么？如果正确，是如何执行的。
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参考文档
› http://mysql-python.sourceforge.net/MySQLdb.html
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