Question

我需要根据过去10天，过去30天，过去60天等日期从数据库中提取“费用”值。注意：每个费用字段都有一个日期字段，格式为m / dd / yyyy。任何人都可以帮我吗？

Answer 1

尝试这样，

[NSString stringWithFormat:@"SELECT  *FROM tablename WHERE  dLastLotteryDate <= '%@'",passDateHere]

编辑： -

像这样检查它会帮助你我想，

> SELECT * FROM tablename WHERE dateField >= date('now','-10 day')
> SELECT * FROM tablename WHERE dateField >= date('now','-30 day')
> SELECT * FROM tablename WHERE dateField >= date('now','-60 day')

Answer 2

使用此查询：

select * from your_tablename where date_column_name <= your_date

Answer 3

我假设您已将日期存储在数据库中。

现在要像过去10天那样获取日期，过去30天，过去60天尝试这样，

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *comps = [NSDateComponents new];
comps.days = -10; // Change this as per your need
NSDate *pastDate = [calendar dateByAddingComponents:comps toDate:[NSDate date] options:0]; //This will give you past date

然后将此日期应用于您在此处建议的Sunny。

Answer 4

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *comps = [NSDateComponents new];
comps.days = -10; // Change this as per your need
NSDate *pastDate = [calendar dateByAddingComponents:comps toDate:[NSDate date] options:0]; //This will give you past date

根据日期过滤数据库值

4 个答案: