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SQL Where date1 is 3 days bigger than date2


By : Lew
Date : October 17 2020, 06:10 PM
wish helps you
I try to filter rows where date1 (importTime) is always 3 days older than the other date2 (time).
code :
where importTime <= dateadd(day, -3, time)


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Why is Date1.CompareTo(Date2) > 0 faster than Date1 > Date2?


By : meissner
Date : March 29 2020, 07:55 AM
Does that help Let's use some Reflector-Magic on this functions (all from the DateTime-Type):
Operator " > "
code :
public static bool operator >(DateTime t1, DateTime t2)
{
    return (t1.InternalTicks > t2.InternalTicks);
}

private long InternalTicks
{
    get
    {
        return (((long) this.dateData) & 0x3fffffffffffffffL);
    }
}

// this.dateData is a private field
public static int Compare(DateTime t1, DateTime t2)
{
    long internalTicks = t1.InternalTicks;
    long num2 = t2.InternalTicks;
    if (internalTicks > num2)
    {
        return 1;
    }
    if (internalTicks < num2)
    {
        return -1;
    }
    return 0;
}
public int CompareTo(DateTime value)
{
    long internalTicks = value.InternalTicks;
    long num2 = this.InternalTicks;
    if (num2 > internalTicks)
    {
        return 1;
    }
    if (num2 < internalTicks)
    {
        return -1;
    }
    return 0;
}

How do I work out how many days ago date1 was compared to date2, using datejs?


By : user3030994
Date : March 29 2020, 07:55 AM
Does that help The optional TimeSpan module includes functionality to easily get various value differences between two date objects.
http://code.google.com/p/datejs/source/browse/trunk/src/time.js
code :
var d1 = Date.parse("jan 7"); // eg, 7th jan
var d2 = Date.parse("jan 2"); // eg, 2nd jan

console.log(new TimeSpan(d1 - d2).days); // 5

javascript setMonth() - setting a month to date2 from date1. Why also date1 change?


By : Shubham
Date : March 29 2020, 07:55 AM
Any of those help Both the variables are pointing to same date object. You can do this instead
code :
var date1=new Date();
alert(date1);
var date2=new Date(date1.valueOf());
alert(date2);
date2.setMonth(date1.getMonth() + 6);
alert(date1+" - "+date2);

TSQL: how to select the client status in the date2 closest to date1 (date1 can be either much else less date2)


By : user3437996
Date : March 29 2020, 07:55 AM
wish of those help Rewriting your conditions to make them more easily readable:
If the minimum date_diff for a client is positive, we will take that date_diff value. In any other case, we will take the date_diff value which is the closest to zero among the negative ones for that client.
code :
SELECT c.Client, 
CASE WHEN (SELECT MIN(date_diff) FROM Clients WHERE client = c.client) > 0
    THEN (SELECT MIN(date_diff) FROM Clients WHERE client = c.client)
    ELSE (SELECT TOP 1 date_diff FROM Clients WHERE client = c.client
            AND date_diff <= 0 ORDER BY date_diff DESC)
END AS AttractionStatus
FROM Clients c

SQL case statement comparing date1 to date2, output date2


By : hayden
Date : March 29 2020, 07:55 AM
I wish this help you I'm relatively new to SQL and am more familiar with Excel. I am trying to compare two dates from two different columns (and tables) and haven't been able to figure out how to do it. I have read posts/done google searches without finding an answer. , You were almost there. Try:
code :
select 
table1.userID,
table1.date1,
table2.date2
from 
table1
left join table2 on table1.userID = table2.userID
where table1.date1 = table2.date2
-- this select statement will show all records where the date is the same.
-- you may have to amend the WHERE clause depending on your date field datatype



select 
table1.userID,
table1.date1,
table2.date2
from table1
left join table2 on table1.userID = table2.userID
where table1.date2 > table2.date1 
-- this select statement will show all records where the date exists and is larger.
-- you may have to amend the WHERE clause depending on your date field datatype
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