这是我的第一个问题;
SELECT
t1.pId,
t1.*,
t2.username,
t2.email,
t2.customer_id
FROM
b_actions t1
JOIN
users t2
ON t1.user_id = t2.id
WHERE
t1.action_name NOT IN (
'action1', 'action2', 'action3'
)
AND t1.user_dismissed = 0
AND EXISTS (
SELECT
1
FROM
temp_a
WHERE
t1.pId = temp_a.id
)
ORDER BY
t1.datetime DESC
如果我写print(“ date1”)或print(“ date2”),它给出下面的输出
2018-09-10 08:56:49 +0000
我想编写相同的示例,但是import Foundation
let date1 = Date()
let date2 = Date().addingTimeInterval(3600)
if date1 == date2
{
print("equals")
}
else if date1 > date2
{
print("date1 is bigger")
}
else if date1 < date2
{
print("date2 is bigger")
}
和date1
必须包含以下两个属性:
格式:date2
语言环境:"dd.MM.yyyy"
除此之外,这是我的第二个问题:
"tr_TR"
您知道,这3600个值增加了一个小时。如何增加一天? 24 * 3600?有没有最短的方法?
答案 0 :(得分:1)
尝试
extension Date {
func addDays(_ days: Int) -> Date {
Calendar.autoupdatingCurrent.date(byAdding: .day, value: days, to: self)!
}
}
答案 1 :(得分:0)
尝试这个
CLOB
答案 2 :(得分:0)
就像@Larme说的那样,您可能想研究Calendar
。
var dateComponents = DateComponents()
dateComponents.day = 1
guard let date = Calendar.current.date(byAdding: dateComponents, to: Date()) else { // Adding date components to current day.
fatalError("date not found")
}
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .short // dd.MM.yyyy
dateFormatter.locale = Locale(identifier: "tr_TR") // Your preferred locale
let dateWithLocale = dateFormatter.string(from: date)
print(date)
您可以使用Date
对象进行比较。仅在需要打印或将其用作String
时,才需要进行格式化。