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            {
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                  {
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                  {
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having  
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                    "UNION": {
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                      "keywords": [
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                        [
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            {
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                      "children": [],
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                      "keywords": [
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                      "children": [],
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                      "group": 1
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                      "keywords": [
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                      "children": [],
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                      "keywords_must": [
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                      "keywords_forbid": [],
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            {
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              "连接查询": {
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                "children": [
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                    "INNER JOIN": {
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                      "keywords_must": [
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                          "mysql",
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                          "inner join"
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                  {
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                    " LEFT JOIN": {
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                      "children": [],
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                      "keywords_must": [
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                          "left join"
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                      "keywords_forbid": [],
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                  {
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                    " RIGHT JOIN": {
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                      "keywords_must": [
                        [
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                          "right join"
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                    " CROSS JOIN": {
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                      "keywords": [],
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                          "cross join"
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                    }
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                      "keywords_must": [
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                "keywords_must": [
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              }
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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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                      "keywords_must": [
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                    "创建索引": {
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                      "children": [],
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                      "keywords_must": [
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                    }
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                    "删除索引": {
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                      "children": [],
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                      "keywords_must": [
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                    }
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              }
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                      "children": [],
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                      "keywords": [
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                    }
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                  {
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                      "keywords": [
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                      "group": 2
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                    }
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                  {
                    "二进制日志": {
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                      "keywords": [
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                    }
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                "group": 2
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              }
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                    "数据导入和导出": {
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                      "keywords": [],
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                    }
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                      "keywords": [
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                  }
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                "group": 2
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              }
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                    }
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                    }
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                    }
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                      "keywords": [
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                      "group": 1
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                    }
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                    }
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                    }
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                      "keywords": [
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                    }
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                ],
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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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                      "group": 1
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                    }
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                  {
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                      "keywords": [
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                      "group": 2
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                    }
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                  {
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                    "匹配顺序": {
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                      "keywords": [
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                      "children": [],
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                    }
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                  {
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                      "keywords": [
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                      "group": 1
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                    }
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                  {
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                      "keywords": [
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                        "GEOMETRY"
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                      "children": [],
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                      "group": 2
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                    }
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                      "keywords": [
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                    }
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                  {
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                      "keywords": [
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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"
                      ],
M
index  
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1682
                      "children": [],
M
index  
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1683 1684 1685 1686 1687 1688
                      "keywords_must": [
                        "索引",
                        "index",
                        "performance",
                        "优化"
                      ],
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1689
                      "keywords_forbid": [],
M
index  
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1690
                      "group": 2
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index  
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1691
                    }
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1692 1693 1694
                  }
                ],
                "keywords_must": [],
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                "keywords_forbid": [],
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1696
                "group": 2
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1697 1698 1699 1700 1701 1702 1703 1704
              }
            },
            {
              "SQL高级技巧": {
                "node_id": "mysql-0cc4dd0b6c024a9e92abb4226bf7ff79",
                "keywords": [],
                "children": [
                  {
M
index  
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1705
                    "CTE和递归查询": {
M
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1706
                      "node_id": "mysql-753300de6ef94af7be40fb91a05421a6",
M
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1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717
                      "keywords": [
                        "cte",
                        "递归查询",
                        "recursive"
                      ],
                      "children": [],
                      "keywords_must": [
                        "cte",
                        "递归查询",
                        "recursive"
                      ],
L
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1718 1719
                      "keywords_forbid": [],
                      "group": 2
M
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1720 1721 1722 1723
                    }
                  },
                  {
                    "Window Function": {
M
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1724
                      "node_id": "mysql-0f7b5745d0b44251a678bbd2bbee5f2e",
M
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1725 1726 1727 1728 1729 1730 1731 1732 1733 1734
                      "keywords": [
                        "函数",
                        "function"
                      ],
                      "children": [],
                      "keywords_must": [
                        "函数",
                        "function",
                        "window"
                      ],
L
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1735 1736
                      "keywords_forbid": [],
                      "group": 2
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1737 1738 1739 1740
                    }
                  },
                  {
                    "透视表 ": {
M
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                      "node_id": "mysql-88200dcbd2e848a5a1d74c086d8abe57",
M
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1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752
                      "keywords": [
                        "透视表",
                        "交叉透视表",
                        "pivot"
                      ],
                      "children": [],
                      "keywords_must": [
                        "透视表",
                        "交叉透视表",
                        "pivot"
                      ],
L
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1753 1754
                      "keywords_forbid": [],
                      "group": 1
M
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1755 1756
                    }
                  },
M
view  
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1757 1758 1759 1760 1761 1762 1763 1764 1765 1766
                  {
                    "Double Not Exists": {
                      "node_id": "mysql-72761d60ad7c4a9a9c87435daca246b9",
                      "keywords": [
                        "exists",
                        "not exists",
                        "double not exists"
                      ],
                      "children": [],
                      "keywords_must": [],
L
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1767 1768
                      "keywords_forbid": [],
                      "group": 0
M
view  
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1769 1770
                    }
                  },
M
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1771 1772
                  {
                    "写入和冲突": {
M
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                      "node_id": "mysql-f9f2ae841cf14d079c8433c833d3396d",
M
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1774 1775 1776 1777 1778 1779 1780 1781 1782 1783
                      "keywords": [
                        "conflict",
                        "冲突",
                        "唯一约束"
                      ],
                      "children": [],
                      "keywords_must": [
                        "conflict",
                        "冲突"
                      ],
L
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1784 1785
                      "keywords_forbid": [],
                      "group": 2
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1786 1787 1788 1789
                    }
                  },
                  {
                    "事务": {
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                      "node_id": "mysql-a00dadd0e1e945e597adcd2b71452e07",
M
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1791 1792 1793 1794 1795 1796 1797 1798 1799
                      "keywords": [
                        "事务",
                        "transaction"
                      ],
                      "children": [],
                      "keywords_must": [
                        "事务",
                        "transaction"
                      ],
L
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1800 1801
                      "keywords_forbid": [],
                      "group": 2
M
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1802 1803 1804 1805
                    }
                  }
                ],
                "keywords_must": [],
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1806
                "keywords_forbid": [],
M
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1807
                "group": 2
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1808 1809 1810
              }
            },
            {
M
on tree  
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1811 1812
              " 过程化编程": {
                "node_id": "mysql-918d2ed90a1546e1aab23036eee5539a",
M
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1813 1814 1815
                "keywords": [],
                "children": [
                  {
M
on tree  
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1816 1817 1818
                    "IF": {
                      "node_id": "mysql-d7f86bc2fcbb4b83a11f2ed73bde7ac0",
                      "keywords": [],
M
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1819
                      "children": [],
M
on tree  
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1820
                      "keywords_must": [],
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1821 1822
                      "keywords_forbid": [],
                      "group": 0
M
on tree  
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1823 1824 1825 1826 1827
                    }
                  },
                  {
                    "LOOP": {
                      "node_id": "mysql-8ef7f9a1bba04bd782d80e9459446228",
M
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1828 1829 1830 1831
                      "keywords": [
                        "loop",
                        "循环"
                      ],
M
on tree  
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1832 1833
                      "children": [],
                      "keywords_must": [],
L
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1834 1835
                      "keywords_forbid": [],
                      "group": 0
M
on tree  
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1836 1837 1838 1839 1840
                    }
                  },
                  {
                    "REPEAT": {
                      "node_id": "mysql-923c7bbf96cf4630a5dfb36f15e62d24",
M
cursor  
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1841 1842 1843 1844
                      "keywords": [
                        "repeat",
                        "循环"
                      ],
M
on tree  
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1845 1846
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1847 1848
                      "keywords_forbid": [],
                      "group": 0
M
on tree  
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1849 1850 1851 1852 1853
                    }
                  },
                  {
                    "WHILE": {
                      "node_id": "mysql-8bbe6f55f32b4a4a8a6011c5748b36fa",
M
while  
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1854 1855 1856
                      "keywords": [
                        "while"
                      ],
M
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1857 1858
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1859 1860
                      "keywords_forbid": [],
                      "group": 0
M
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1861 1862 1863 1864 1865 1866
                    }
                  },
                  {
                    " 游标": {
                      "node_id": "mysql-459fd14ff096438d9b6460270bec4754",
                      "keywords": [
M
cursor  
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1867 1868
                        "cursor",
                        "游标"
M
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1869
                      ],
M
on tree  
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1870 1871
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1872 1873
                      "keywords_forbid": [],
                      "group": 0
M
on tree  
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1874 1875 1876 1877
                    }
                  }
                ],
                "keywords_must": [],
L
luxin 已提交
1878
                "keywords_forbid": [],
M
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1879
                "group": 2
M
on tree  
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1880 1881
              }
            },
M
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1882 1883 1884 1885 1886
            {
              "设计优化": {
                "node_id": "mysql-d4ff221a05884e6dbf0c5c2e5c8a0d48",
                "keywords": [],
                "children": [
M
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1887 1888 1889 1890 1891 1892
                  {
                    "生成列": {
                      "node_id": "mysql-d3611482eecd4055816df4b1dd9ff90d",
                      "keywords": [],
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1893
                      "keywords_forbid": [],
M
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1894
                      "group": 2
M
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1895 1896
                    }
                  },
M
Mars Liu 已提交
1897 1898 1899 1900 1901 1902
                  {
                    " 范式设计": {
                      "node_id": "mysql-bee8db3dd5354a42bb50277fe4cb2913",
                      "keywords": [],
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1903 1904
                      "keywords_forbid": [],
                      "group": 2
M
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1905 1906
                    }
                  },
M
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1907 1908 1909
                  {
                    "反范式设计": {
                      "node_id": "mysql-3e4c837b471c454c90bfbc32445f2780",
L
luxin 已提交
1910 1911 1912 1913
                      "keywords": [
                        "反范式",
                        "anti pattern"
                      ],
M
Mars Liu 已提交
1914 1915
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1916 1917
                      "keywords_forbid": [],
                      "group": 0
M
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1918 1919 1920 1921 1922
                    }
                  },
                  {
                    "增加中间表": {
                      "node_id": "mysql-a2ddae1b044149ecbb74db3b6eb32721",
M
view  
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1923 1924 1925 1926
                      "keywords": [
                        "middle",
                        "中间表"
                      ],
M
Mars Liu 已提交
1927 1928
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1929 1930
                      "keywords_forbid": [],
                      "group": 0
M
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1931 1932
                    }
                  },
M
Mars Liu 已提交
1933 1934 1935
                  {
                    "分析数据表": {
                      "node_id": "mysql-cde6eae01784468fa0171ff3042f221f",
L
luxin 已提交
1936 1937 1938 1939
                      "keywords": [
                        "analyze table",
                        "分析数据表"
                      ],
M
Mars Liu 已提交
1940 1941
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1942 1943
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
1944 1945
                    }
                  },
M
Mars Liu 已提交
1946 1947 1948
                  {
                    "检查数据表": {
                      "node_id": "mysql-fbcc654d6a86452aa349d2ed6003adb6",
M
Mars Liu 已提交
1949 1950 1951
                      "keywords": [
                        "show profile"
                      ],
M
Mars Liu 已提交
1952 1953
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1954 1955
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
1956 1957 1958
                    }
                  },
                  {
M
Mars Liu 已提交
1959
                    "优化数据表": {
M
Mars Liu 已提交
1960
                      "node_id": "mysql-f5775462ae784d44a4b2bce5f456311a",
L
luxin 已提交
1961 1962 1963 1964
                      "keywords": [
                        "performance table",
                        "优化数据表"
                      ],
M
Mars Liu 已提交
1965 1966
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1967 1968
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
1969
                    }
M
Mars Liu 已提交
1970 1971 1972 1973 1974 1975 1976
                  },
                  {
                    "拆分数据表": {
                      "node_id": "mysql-ccb6fcf2983b4b3e8b37abbcbc776f21",
                      "keywords": [],
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
1977 1978
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
1979
                    }
M
Mars Liu 已提交
1980 1981 1982
                  }
                ],
                "keywords_must": [],
L
luxin 已提交
1983
                "keywords_forbid": [],
M
Mars Liu 已提交
1984
                "group": 2
M
Mars Liu 已提交
1985 1986
              }
            },
M
on tree  
Mars Liu 已提交
1987 1988 1989 1990 1991 1992
            {
              "运维与架构": {
                "node_id": "mysql-1312f53e4f41430bab7873901dd64433",
                "keywords": [],
                "children": [
                  {
M
Mars Liu 已提交
1993 1994
                    "主从复制": {
                      "node_id": "mysql-cc8606a40aac43cb8b063a65f51e4df1",
M
Mars Liu 已提交
1995 1996 1997 1998 1999
                      "keywords": [
                        "slave",
                        "master",
                        "standby"
                      ],
M
on tree  
Mars Liu 已提交
2000 2001
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2002
                      "keywords_forbid": [],
M
Mars Liu 已提交
2003
                      "group": 2
M
on tree  
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2004 2005
                    }
                  },
M
Mars Liu 已提交
2006 2007 2008
                  {
                    "添加从库": {
                      "node_id": "mysql-1c778aa1adfd43d4ac9da32df9e44238",
M
chains  
Mars Liu 已提交
2009 2010 2011 2012 2013 2014
                      "keywords": [
                        "slave",
                        "master",
                        "standby",
                        "add slave"
                      ],
M
Mars Liu 已提交
2015 2016
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2017 2018
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
2019 2020 2021 2022 2023
                    }
                  },
                  {
                    "从主从复制到链式复制": {
                      "node_id": "mysql-88333dcb84a946a78bfd9f413c6e795b",
M
Mars Liu 已提交
2024 2025 2026 2027 2028 2029 2030
                      "keywords": [
                        "chains",
                        "slave",
                        "master",
                        "主从复制",
                        "replication"
                      ],
M
Mars Liu 已提交
2031 2032
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2033 2034
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
2035 2036 2037 2038 2039
                    }
                  },
                  {
                    "从链式复制到主从复制": {
                      "node_id": "mysql-2f6f847907d4415788e98d2f70f64d3c",
M
Mars Liu 已提交
2040
                      "keywords": [
M
Mars Liu 已提交
2041 2042 2043 2044 2045
                        "chains",
                        "slave",
                        "master",
                        "主从复制",
                        "replication"
M
Mars Liu 已提交
2046
                      ],
M
Mars Liu 已提交
2047 2048
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2049 2050
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
2051 2052 2053 2054
                    }
                  },
                  {
                    "多源复制": {
M
fliter  
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2055
                      "node_id": "mysql-91ba7f7a6b684b8aad01abd583cf0442",
M
Mars Liu 已提交
2056 2057 2058 2059 2060
                      "keywords": [
                        "多源复制",
                        "multimaster",
                        "replication"
                      ],
M
Mars Liu 已提交
2061 2062
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2063 2064
                      "keywords_forbid": [],
                      "group": 0
M
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2065 2066 2067 2068 2069
                    }
                  },
                  {
                    "复制过滤器": {
                      "node_id": "mysql-b3cba2e9c7ea46d5beeb1948b41a74d5",
M
index  
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2070
                      "keywords": [
M
Mars Liu 已提交
2071 2072 2073
                        "复制过滤器",
                        "filter",
                        "replication"
M
index  
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2074
                      ],
M
Mars Liu 已提交
2075 2076
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2077 2078
                      "keywords_forbid": [],
                      "group": 0
M
Mars Liu 已提交
2079 2080 2081 2082 2083
                    }
                  },
                  {
                    "延迟复制": {
                      "node_id": "mysql-9dee640902204fcbbe780c0f04bc7c18",
M
Mars Liu 已提交
2084 2085 2086 2087 2088
                      "keywords": [
                        "delay",
                        "延迟复制",
                        "replication"
                      ],
M
index  
Mars Liu 已提交
2089 2090
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2091 2092
                      "keywords_forbid": [],
                      "group": 0
M
index  
Mars Liu 已提交
2093
                    }
M
on tree  
Mars Liu 已提交
2094 2095 2096
                  }
                ],
                "keywords_must": [],
L
luxin 已提交
2097
                "keywords_forbid": [],
M
Mars Liu 已提交
2098
                "group": 2
M
on tree  
Mars Liu 已提交
2099 2100 2101 2102 2103 2104 2105 2106 2107 2108
              }
            },
            {
              "查询优化": {
                "node_id": "mysql-310130dd922d4e2b832891cc0e157cbf",
                "keywords": [],
                "children": [
                  {
                    " SHOW STATUS": {
                      "node_id": "mysql-3574b2e5c9ca475789d9d582d7726906",
M
on tree  
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2109 2110 2111
                      "keywords": [
                        "show status"
                      ],
M
on tree  
Mars Liu 已提交
2112 2113
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2114
                      "keywords_forbid": [],
M
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2115
                      "group": 2
M
on tree  
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2116 2117 2118
                    }
                  },
                  {
M
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2119 2120
                    " SHOW PROFILE": {
                      "node_id": "mysql-f0b12126dd3e4be09010a308a822bc32",
M
on tree  
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2121
                      "keywords": [
M
Mars Liu 已提交
2122
                        "show profile"
M
on tree  
Mars Liu 已提交
2123 2124 2125
                      ],
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2126
                      "keywords_forbid": [],
M
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2127
                      "group": 2
M
on tree  
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2128 2129 2130
                    }
                  },
                  {
M
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2131 2132
                    " EXPLAIN": {
                      "node_id": "mysql-a42f617d4eb54aabbc649bdde4485117",
M
on tree  
Mars Liu 已提交
2133
                      "keywords": [
M
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2134 2135
                        "explain",
                        "explain analyze"
M
on tree  
Mars Liu 已提交
2136
                      ],
M
on tree  
Mars Liu 已提交
2137 2138
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2139
                      "keywords_forbid": [],
M
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2140
                      "group": 2
M
on tree  
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2141
                    }
M
Mars Liu 已提交
2142 2143 2144
                  }
                ],
                "keywords_must": [],
L
luxin 已提交
2145
                "keywords_forbid": [],
M
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2146
                "group": 2
M
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2147
              }
M
Mars Liu 已提交
2148 2149
            },
            {
M
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2150
              "写优化": {
M
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2151 2152
                "node_id": "mysql-284cf77b823540c38370d5cd70ada265",
                "keywords": [],
M
Mars Liu 已提交
2153 2154 2155 2156 2157 2158 2159
                "children": [
                  {
                    "插入优化": {
                      "node_id": "mysql-4e93793f51a24f0eb00f7824ecc8929b",
                      "keywords": [],
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2160 2161
                      "keywords_forbid": [],
                      "group": 0
M
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2162 2163 2164 2165 2166
                    }
                  },
                  {
                    "删除优化": {
                      "node_id": "mysql-ff4222264013437da2214ff77ca92961",
M
Mars Liu 已提交
2167 2168 2169 2170 2171 2172
                      "keywords": [
                        "delete",
                        "performance",
                        "优化",
                        "删除"
                      ],
M
Mars Liu 已提交
2173 2174
                      "children": [],
                      "keywords_must": [],
L
luxin 已提交
2175 2176
                      "keywords_forbid": [],
                      "group": 0
M
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2177 2178 2179
                    }
                  }
                ],
M
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2180
                "keywords_must": [],
L
luxin 已提交
2181
                "keywords_forbid": [],
M
Mars Liu 已提交
2182
                "group": 2
M
Mars Liu 已提交
2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195
              }
            },
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