根據日期過濾數據庫值

Question

我需要從數據庫中獲取基於最近10天，最近30天，最近60天等日期的「費用」值。注：每個費用字段都有格式的日期字段米/日/年。誰可以幫我這個事？

Answer 1

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 

Answer 2

嘗試這樣，

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

編輯： -

檢查這樣it'l幫助你，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 3

使用此查詢：

select * from your_tablename where date_column_name <= your_date 

Answer 4

我假設你已經將你的日期存儲在數據庫中即

我們迄今獲得像去年一樣10，最近30天，過去60天嘗試這種方式，

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 

然後將此日期查詢晴天這裏建議。