https://www.cnblogs.com/wendingding/p/3950198.html
http://www.reibang.com/p/1f81d8a12697
https://github.com/yuantiku/YTKKeyValueStore
https://blog.csdn.net/WorthyZhang/article/details/44454861
http://www.reibang.com/p/6746b8a00523
select恭朗、insert步责、update、delete登下、from恃鞋、create、where、desc栈幸、order、by帮辟、group速址、table、alter由驹、view芍锚、index等等
https://www.aliyun.com/jiaocheng/409687.html
http://www.reibang.com/p/f2e59e98ab86
https://blog.csdn.net/czkyes/article/details/51453420
https://www.cnblogs.com/wendingding/p/3871848.html （FMDB的使用）
