1、修改表名為臨時表

ALTER TABLE {tableName} RENAME TO TempOldTable;

2、創建新表，跟原來的表名一致

CREATE TABLE {tableName} (name TEXT, COLNew {type} DEFAULT {defaultValue}, qty INTEGER, rate REAL);

3、填充原來的數據

INSERT INTO {tableName} (name, qty, rate) SELECT name, qty, rate FROM TempOldTable;

4、刪掉臨時表

DROP TABLE TempOldTable;

參考：https://stackoverflow.com/questions/4253804/insert-new-column-into-table-in-sqlite

sqlite3中給表添加列