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                      "keywords": [
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                  {
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                  {
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                    " LEFT JOIN": {
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                    " RIGHT JOIN": {
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                        "右连接"
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                    " CROSS JOIN": {
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                    " 复杂连接": {
                      "node_id": "mysql-a4773004e0cf432aa7ccdf6b9490838f",
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                      "keywords": [
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                      "keywords_must": [
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                ],
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                "keywords_must": [
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            },
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              " 索引": {
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                "keywords": [],
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                "children": [
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                    "索引入门": {
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                      "children": [],
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                    "创建索引": {
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                        "创建索引"
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                    "删除索引": {
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                          "索引"
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            {
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            {
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                  {
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                      "keywords": [
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                      "keywords": [
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                        "慢查询日志"
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                      "keywords": [
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                      "keywords": [
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            },
            {
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                    "数据导入和导出": {
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                      "keywords": [
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                        "restore",
                        "import",
                        "backup",
                        "导入",
                        "导出"
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                    }
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                      "keywords": [
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                      "keywords": [
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                  {
                    "为用户授权": {
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                      "keywords": [
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                        "role",
                        "授权",
                        "角色"
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                    }
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                  {
                    "查看用户权限": {
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                      "keywords": [
                        "privilege",
                        "查看权限"
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                    }
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                    "撤销用户权限": {
                      "node_id": "mysql-d47605d2cb134cdc98e6fbefc0651e8f",
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                      "keywords": [
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                        "revoke",
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                        "revoke"
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                    }
                  },
                  {
                    "修改用户密码": {
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                      "keywords": [
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                        "修改密码"
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                    "删除用户": {
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                      "keywords": [
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                        "删除用户"
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                    }
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                  {
                    "限制用户使用资源": {
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                      "keywords": [
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                        "limit",
                        "资源"
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        }
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          "children": [
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              "深入索引": {
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                "node_id": "mysql-5b56965051d342849d665acb5f55a734",
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                "keywords": [],
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                    "唯一索引": {
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                      "keywords": [
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                        "unique",
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                      ],
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                    }
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                  {
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                      "keywords": [
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                      "keywords_must": [
                        [
                          "mysql",
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                  {
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                    "匹配顺序": {
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                      "keywords": [
                        "match",
                        "匹配顺序",
                        "匹配最左前缀"
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                      "children": [],
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                  {
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                      "keywords": [
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                        "compose",
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                      "keywords": [
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                        "GEOMETRY"
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                  {
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                      "keywords": [
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                  {
                    "隐藏索引": {
                      "node_id": "mysql-c57e1195b0914cd38798ce029156ec87",
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                      "keywords": [
                        "invisible",
                        "visible",
                        "隐藏索引"
                      ],
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1714 1715
                      "children": [],
                      "keywords_must": [],
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                      "keywords_forbid": [],
                      "group": 0,
                      "subtree": ""
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index  
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                    }
                  },
                  {
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index  
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                    "函数和表达式索引": {
                      "node_id": "mysql-7745c930b53c48d18afb4ba14e0510a7",
                      "keywords": [
                        "索引",
                        "index",
                        "performance",
                        "优化",
                        "表达式索引"
                      ],
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index  
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1731
                      "children": [],
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index  
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1732 1733 1734 1735 1736 1737
                      "keywords_must": [
                        "索引",
                        "index",
                        "performance",
                        "优化"
                      ],
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                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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                    }
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                  }
                ],
                "keywords_must": [],
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                "keywords_forbid": [],
                "group": 2,
                "subtree": ""
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              }
            },
            {
              "SQL高级技巧": {
                "node_id": "mysql-0cc4dd0b6c024a9e92abb4226bf7ff79",
                "keywords": [],
                "children": [
                  {
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index  
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                    "CTE和递归查询": {
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                      "node_id": "mysql-753300de6ef94af7be40fb91a05421a6",
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1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768
                      "keywords": [
                        "cte",
                        "递归查询",
                        "recursive"
                      ],
                      "children": [],
                      "keywords_must": [
                        "cte",
                        "递归查询",
                        "recursive"
                      ],
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                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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                    }
                  },
                  {
                    "Window Function": {
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                      "node_id": "mysql-0f7b5745d0b44251a678bbd2bbee5f2e",
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1777 1778 1779 1780 1781 1782
                      "keywords": [
                        "函数",
                        "function"
                      ],
                      "children": [],
                      "keywords_must": [
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                        "mysql"
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                      ],
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1785 1786 1787
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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                    }
                  },
                  {
                    "透视表 ": {
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                      "node_id": "mysql-88200dcbd2e848a5a1d74c086d8abe57",
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1793 1794 1795 1796 1797 1798 1799
                      "keywords": [
                        "透视表",
                        "交叉透视表",
                        "pivot"
                      ],
                      "children": [],
                      "keywords_must": [
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                        "mysql"
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1801
                      ],
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1802 1803 1804
                      "keywords_forbid": [],
                      "group": 1,
                      "subtree": ""
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1805 1806
                    }
                  },
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view  
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1807 1808 1809 1810 1811 1812 1813 1814 1815
                  {
                    "Double Not Exists": {
                      "node_id": "mysql-72761d60ad7c4a9a9c87435daca246b9",
                      "keywords": [
                        "exists",
                        "not exists",
                        "double not exists"
                      ],
                      "children": [],
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1816 1817 1818
                      "keywords_must": [
                        "mysql"
                      ],
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1819 1820 1821
                      "keywords_forbid": [],
                      "group": 0,
                      "subtree": ""
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view  
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1822 1823
                    }
                  },
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1824 1825
                  {
                    "写入和冲突": {
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1826
                      "node_id": "mysql-f9f2ae841cf14d079c8433c833d3396d",
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1827 1828 1829 1830 1831 1832 1833
                      "keywords": [
                        "conflict",
                        "冲突",
                        "唯一约束"
                      ],
                      "children": [],
                      "keywords_must": [
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                        "mysql"
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1835
                      ],
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1836 1837 1838
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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1839 1840 1841 1842
                    }
                  },
                  {
                    "事务": {
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                      "node_id": "mysql-a00dadd0e1e945e597adcd2b71452e07",
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1844 1845 1846 1847 1848 1849
                      "keywords": [
                        "事务",
                        "transaction"
                      ],
                      "children": [],
                      "keywords_must": [
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1850 1851 1852 1853
                        [
                          "mysql",
                          "事务"
                        ]
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1854
                      ],
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1855 1856 1857
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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1858 1859 1860 1861
                    }
                  }
                ],
                "keywords_must": [],
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1862 1863 1864
                "keywords_forbid": [],
                "group": 2,
                "subtree": ""
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1865 1866 1867
              }
            },
            {
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1868
              "过程化编程": {
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on tree  
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1869
                "node_id": "mysql-918d2ed90a1546e1aab23036eee5539a",
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1870 1871 1872
                "keywords": [],
                "children": [
                  {
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on tree  
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1873 1874
                    "IF": {
                      "node_id": "mysql-d7f86bc2fcbb4b83a11f2ed73bde7ac0",
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review  
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1875 1876 1877
                      "keywords": [
                        "if"
                      ],
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1878
                      "children": [],
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on tree  
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1879
                      "keywords_must": [],
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1880 1881 1882
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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on tree  
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1883 1884 1885 1886 1887
                    }
                  },
                  {
                    "LOOP": {
                      "node_id": "mysql-8ef7f9a1bba04bd782d80e9459446228",
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1888 1889 1890 1891
                      "keywords": [
                        "loop",
                        "循环"
                      ],
M
on tree  
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1892 1893
                      "children": [],
                      "keywords_must": [],
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1894 1895 1896
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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on tree  
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1897 1898 1899 1900 1901
                    }
                  },
                  {
                    "REPEAT": {
                      "node_id": "mysql-923c7bbf96cf4630a5dfb36f15e62d24",
M
cursor  
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1902 1903 1904 1905
                      "keywords": [
                        "repeat",
                        "循环"
                      ],
M
on tree  
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1906 1907
                      "children": [],
                      "keywords_must": [],
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1908 1909 1910
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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on tree  
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1911 1912 1913 1914 1915
                    }
                  },
                  {
                    "WHILE": {
                      "node_id": "mysql-8bbe6f55f32b4a4a8a6011c5748b36fa",
M
while  
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1916 1917 1918
                      "keywords": [
                        "while"
                      ],
M
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1919 1920
                      "children": [],
                      "keywords_must": [],
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1921 1922 1923
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
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1924 1925 1926 1927 1928 1929
                    }
                  },
                  {
                    " 游标": {
                      "node_id": "mysql-459fd14ff096438d9b6460270bec4754",
                      "keywords": [
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cursor  
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1930 1931
                        "cursor",
                        "游标"
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1932
                      ],
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on tree  
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1933 1934
                      "children": [],
                      "keywords_must": [],
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luxin 已提交
1935 1936 1937
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
on tree  
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1938 1939 1940 1941
                    }
                  }
                ],
                "keywords_must": [],
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luxin 已提交
1942 1943 1944
                "keywords_forbid": [],
                "group": 2,
                "subtree": ""
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on tree  
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1945 1946
              }
            },
M
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1947 1948 1949 1950 1951
            {
              "设计优化": {
                "node_id": "mysql-d4ff221a05884e6dbf0c5c2e5c8a0d48",
                "keywords": [],
                "children": [
M
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1952 1953 1954
                  {
                    "生成列": {
                      "node_id": "mysql-d3611482eecd4055816df4b1dd9ff90d",
M
review  
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1955 1956 1957
                      "keywords": [
                        "generated"
                      ],
M
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1958 1959
                      "children": [],
                      "keywords_must": [],
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luxin 已提交
1960 1961 1962
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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1963 1964
                    }
                  },
M
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1965 1966 1967
                  {
                    " 范式设计": {
                      "node_id": "mysql-bee8db3dd5354a42bb50277fe4cb2913",
M
review  
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1968 1969 1970
                      "keywords": [
                        "normalization"
                      ],
M
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1971 1972
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1973 1974 1975
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
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1976 1977
                    }
                  },
M
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1978 1979 1980
                  {
                    "反范式设计": {
                      "node_id": "mysql-3e4c837b471c454c90bfbc32445f2780",
L
luxin 已提交
1981 1982
                      "keywords": [
                        "反范式",
M
review  
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1983
                        "anti normalization"
L
luxin 已提交
1984
                      ],
M
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1985 1986
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1987 1988 1989
                      "keywords_forbid": [],
                      "group": 0,
                      "subtree": ""
M
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1990 1991 1992 1993 1994
                    }
                  },
                  {
                    "增加中间表": {
                      "node_id": "mysql-a2ddae1b044149ecbb74db3b6eb32721",
M
view  
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1995 1996 1997 1998
                      "keywords": [
                        "middle",
                        "中间表"
                      ],
M
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1999 2000
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2001 2002 2003
                      "keywords_forbid": [],
                      "group": 0,
                      "subtree": ""
M
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2004 2005
                    }
                  },
M
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2006 2007 2008
                  {
                    "分析数据表": {
                      "node_id": "mysql-cde6eae01784468fa0171ff3042f221f",
L
luxin 已提交
2009 2010 2011 2012
                      "keywords": [
                        "analyze table",
                        "分析数据表"
                      ],
M
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2013 2014
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2015 2016 2017
                      "keywords_forbid": [],
                      "group": 0,
                      "subtree": ""
M
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2018
                    }
M
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2019 2020 2021
                  }
                ],
                "keywords_must": [],
L
luxin 已提交
2022 2023 2024
                "keywords_forbid": [],
                "group": 2,
                "subtree": ""
M
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2025 2026
              }
            },
M
on tree  
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2027 2028 2029 2030 2031 2032
            {
              "运维与架构": {
                "node_id": "mysql-1312f53e4f41430bab7873901dd64433",
                "keywords": [],
                "children": [
                  {
M
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2033 2034
                    "主从复制": {
                      "node_id": "mysql-cc8606a40aac43cb8b063a65f51e4df1",
M
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2035 2036 2037 2038 2039
                      "keywords": [
                        "slave",
                        "master",
                        "standby"
                      ],
M
on tree  
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2040 2041
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2042 2043 2044
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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on tree  
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2045 2046
                    }
                  },
M
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2047 2048 2049
                  {
                    "添加从库": {
                      "node_id": "mysql-1c778aa1adfd43d4ac9da32df9e44238",
M
chains  
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2050 2051 2052 2053 2054 2055
                      "keywords": [
                        "slave",
                        "master",
                        "standby",
                        "add slave"
                      ],
M
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2056 2057
                      "children": [],
                      "keywords_must": [],
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2058 2059 2060
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
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2061 2062 2063 2064 2065
                    }
                  },
                  {
                    "从主从复制到链式复制": {
                      "node_id": "mysql-88333dcb84a946a78bfd9f413c6e795b",
M
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2066 2067 2068 2069 2070 2071 2072
                      "keywords": [
                        "chains",
                        "slave",
                        "master",
                        "主从复制",
                        "replication"
                      ],
M
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2073 2074
                      "children": [],
                      "keywords_must": [],
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2075 2076 2077
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
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2078 2079 2080 2081 2082
                    }
                  },
                  {
                    "从链式复制到主从复制": {
                      "node_id": "mysql-2f6f847907d4415788e98d2f70f64d3c",
M
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2083
                      "keywords": [
M
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2084 2085 2086 2087 2088
                        "chains",
                        "slave",
                        "master",
                        "主从复制",
                        "replication"
M
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2089
                      ],
M
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2090 2091
                      "children": [],
                      "keywords_must": [],
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luxin 已提交
2092 2093 2094
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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2095 2096 2097 2098
                    }
                  },
                  {
                    "多源复制": {
M
fliter  
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2099
                      "node_id": "mysql-91ba7f7a6b684b8aad01abd583cf0442",
M
Mars Liu 已提交
2100 2101 2102 2103 2104
                      "keywords": [
                        "多源复制",
                        "multimaster",
                        "replication"
                      ],
M
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2105 2106
                      "children": [],
                      "keywords_must": [],
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2107 2108 2109
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
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2110 2111 2112 2113 2114
                    }
                  },
                  {
                    "复制过滤器": {
                      "node_id": "mysql-b3cba2e9c7ea46d5beeb1948b41a74d5",
M
index  
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2115
                      "keywords": [
M
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2116 2117 2118
                        "复制过滤器",
                        "filter",
                        "replication"
M
index  
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2119
                      ],
M
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2120 2121
                      "children": [],
                      "keywords_must": [],
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2122 2123 2124
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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                    }
                  },
                  {
                    "延迟复制": {
                      "node_id": "mysql-9dee640902204fcbbe780c0f04bc7c18",
M
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2130 2131 2132 2133 2134
                      "keywords": [
                        "delay",
                        "延迟复制",
                        "replication"
                      ],
M
index  
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2135 2136
                      "children": [],
                      "keywords_must": [],
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2137 2138 2139
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
index  
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2140
                    }
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on tree  
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2141 2142 2143
                  }
                ],
                "keywords_must": [],
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2144 2145 2146
                "keywords_forbid": [],
                "group": 2,
                "subtree": ""
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on tree  
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2147 2148 2149 2150 2151 2152 2153 2154 2155 2156
              }
            },
            {
              "查询优化": {
                "node_id": "mysql-310130dd922d4e2b832891cc0e157cbf",
                "keywords": [],
                "children": [
                  {
                    " SHOW STATUS": {
                      "node_id": "mysql-3574b2e5c9ca475789d9d582d7726906",
M
on tree  
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2157 2158 2159
                      "keywords": [
                        "show status"
                      ],
M
on tree  
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2160 2161
                      "children": [],
                      "keywords_must": [],
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2162 2163 2164
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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2165 2166 2167
                    }
                  },
                  {
M
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2168 2169
                    " SHOW PROFILE": {
                      "node_id": "mysql-f0b12126dd3e4be09010a308a822bc32",
M
on tree  
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2170
                      "keywords": [
M
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2171
                        "show profile"
M
on tree  
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2172 2173 2174
                      ],
                      "children": [],
                      "keywords_must": [],
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2175 2176 2177
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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2178 2179 2180
                    }
                  },
                  {
M
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2181 2182
                    " EXPLAIN": {
                      "node_id": "mysql-a42f617d4eb54aabbc649bdde4485117",
M
on tree  
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2183
                      "keywords": [
M
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2184 2185
                        "explain",
                        "explain analyze"
M
on tree  
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2186
                      ],
M
on tree  
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2187 2188
                      "children": [],
                      "keywords_must": [],
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2189 2190 2191
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
M
on tree  
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2192
                    }
M
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2193 2194 2195
                  }
                ],
                "keywords_must": [],
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2196 2197 2198
                "keywords_forbid": [],
                "group": 2,
                "subtree": ""
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2199
              }
M
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2200 2201
            },
            {
M
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2202
              "写优化": {
M
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2203 2204
                "node_id": "mysql-284cf77b823540c38370d5cd70ada265",
                "keywords": [],
M
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2205 2206 2207 2208 2209 2210 2211
                "children": [
                  {
                    "插入优化": {
                      "node_id": "mysql-4e93793f51a24f0eb00f7824ecc8929b",
                      "keywords": [],
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                      "keywords_must": [],
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2212 2213 2214
                      "keywords_forbid": [],
                      "group": 2,
                      "subtree": ""
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2215 2216 2217 2218 2219
                    }
                  },
                  {
                    "删除优化": {
                      "node_id": "mysql-ff4222264013437da2214ff77ca92961",
M
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2220 2221 2222 2223 2224 2225
                      "keywords": [
                        "delete",
                        "performance",
                        "优化",
                        "删除"
                      ],
M
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2226 2227
                      "children": [],
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L
luxin 已提交
2228 2229 2230
                      "keywords_forbid": [],
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                      "subtree": ""
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2231 2232 2233
                    }
                  }
                ],
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2234
                "keywords_must": [],
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