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高性能MySQL:剖析單條查詢(1)[2]

2013-11-23 21:10:34  來源: MySQL 

  | checking permissions | |

  | checking permissions | |

  | checking permissions | |

  | checking permissions | |

  | checking permissions | |

  | optimizing | |

  | statistics | |

  | preparing | |

  | Creating tmp table | |

  | executing | |

  | Copying to tmp table | |

  | Sorting result | |

  | Sending data | |

  | removing tmp table | |

  | Sending data | |

  | init | |

  | optimizing | |

  | statistics | |

  | preparing | |

  | executing | |

  | Sending data | |

  | end | |

  | query end | |

  | freeing items | |

  | removing tmp table | |

  | removing tmp table | |

  | closing tables | |

  | logging slow query | |

  | logging slow query | |

  | cleaning up | |

  ++

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