Android中的Sqlite删除查询语法

Question

我想写一个Query来从表中删除一行.我很困惑写这个陈述.写这篇文章我需要一些帮助.我在这里用简单的sql语句提供我的要求.

(伪代码)

delete from tablename where value =="string1" && value2 == "string2" && value3 == "string3";

我想在Android的Sqlite语法中写这个db.delete(tablename, whereclause, whereargs);.

我很感谢你的帮助.

Answer 1

更好的方法是使用

String where = "value1 = ?"
+ " AND value2 = ?"
+ " AND value3 = ?";
String[] whereArgs = {string1,string2,string3};

Answer 2

String table_name = "myTable";
String where = "value1 = 'string1'"
    + " AND value2 = 'string2'"
    + " AND value3 = 'string3'";
String whereArgs = null;
mDb.delete(table_name, where, whereArgs);