sqlite3中给表添加列

1、修改表名为临时表

ALTER TABLE {tableName} RENAME TO TempOldTable;

2、创建新表，跟原来的表名一致

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

3、填充原来的数据

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

4、删掉临时表

DROP TABLE TempOldTable;

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