如何将日期对象的长值转换为日期

Question

I have long value of date object that has been converted by java long from date object and now i want to use that long value in SQL query to be compare with date.

I want to convert long value to SQL date object because I want to fetch data by date filter

I tried like

"select DATEADD(SECOND, 1376773200000/1000 ,'1970/1/1')"

but it won't work.

How to do this?

Answer 1

I would suggest you use parameterized SQL instead, which will allow you to specify the value as a java.sql.Date instead. For example:

String sql = "SELECT * FROM Foo WHERE CreatedDate > ?";
PreparedStatement st = conn.prepareStatement(sql);
st.setDate(1, new java.sql.Date(timestampValue));

(Or use java.sql.Timestamp - it depends on the exact type of your field.)

Answer 2

A good post is How do I add Hours, mins, seconds to dateadd sql?

In oracle, you could do it like:

declare
 vdate      date;
 vseconds number;
begin
  vseconds := 5;
  vdate      := to_date('2.1.2010 05:00','dd.mm.yyyy hh24:mi');
  vdate := vdate + vseconds/24/60/60;
end;

which is equivalent to select to_date('2.1.2010 05:00','dd.mm.yyyy hh24:mi') + 5/24/60/60 from dual;

Another example found here http://www.codeproject.com/Articles/566542/Date-and-Time-Data-Types-and-Functions-SQL-Server#27 :

SELECT DATEADD(second, 1, @date) AS 'Second' ; @date is a variable.

Converting long to date:

If the long date is 1220227200L , then date is

Date d = new Date(1220227200L * 1000);

Output

Sun Aug 31 20:00:00 GMT-04:00 2008