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早知道我就看书了，上网搜到的都是些垃圾内容

挺好的！知道了primary key 和index的区别 If a column is declared as INTEGER PRIMARY KEY, it is used internally as the key for the table structure, so the records in the table are ordered on that column by default. Although it does not cause an index to show up in sqlite_master, the column will behave as if it were indexed. Explicitly creating an index on an I

早知道我就看书了，上网搜到的都是些垃圾内容

早知道我就看书了，上网搜到的都是些垃圾内容

挺好的！知道了primary key 和index的区别 If a column is declared as INTEGER PRIMARY KEY, it is used internally as the key for the table structure, so the records in the table are ordered on that column by default. Although it does not cause an index to show up in sqlite_master, the column will behave as if it were indexed. Explicitly creating an index on an I