表的创建
db.execSQL("create table info(_id integer primary key autoincrement,name varchar(20)");
db.execSQL("alter table info add phone varchar(20)");
增删改查sql语句
--insert into info(name,phone) values('王五','13777777');
--delete from info where name='王五';
--update info set phone='139999999'where name='王五';
--select name,phone from info
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数据库事务
db.execSQL("create table info (_id integer primary key autoincrement,name varchar(20),phone varchar(20),money varchar(20))");
db.execSQL("insert into info ('name','phone','money') values ('张三','138888','2000')");
db.execSQL("insert into info ('name','phone','money') values ('李四','139999','5000')");
db.execSQL("update info set money= money-200 where name=?",new String[]{"AA"});
// int i = 100/0;
db.execSQL("update info set money= money+200 where name=?",new String[]{"BB"});
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