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nlimpid
V2EX  ›  MySQL

请求一条 SQL 语句

  •  
  •   nlimpid ·
    nlimpid · Oct 31, 2018 · 2657 views
    This topic created in 2751 days ago, the information mentioned may be changed or developed.

    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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