How to Compare Datetime With Only Date in SQL Server

Compare DATETIME and DATE ignoring time portion

Use the CAST to the new DATE data type in SQL Server 2008 to compare just the date portion:

IF CAST(DateField1 AS DATE) = CAST(DateField2 AS DATE)

How to compare only date part when delivery date is today

You can try a query like below

select * from (tablename)
where CAST(delivery_date as date) = CAST(getdate() as date)

Also if all delivery dates have time part like 00:00:00.000 for sure then

select * from (tablename)
where delivery_date = CAST(getdate() as date) 

would work as good.

Best way to compare dates without time in SQL Server

Don't use convert - that involves strings for no reason. A trick is that a datetime is actually a numeric, and the days is the integer part (time is the decimal fraction); hence the day is the FLOOR of the value: this is then just math, not strings - much faster

declare @when datetime = GETUTCDATE()
select @when -- date + time
declare @day datetime = CAST(FLOOR(CAST(@when as float)) as datetime)
select @day -- date only

In your case, no need to convert back to datetime; and using a range allows the most efficent comparisons (especially if indexed):

declare @when datetime = 'Feb 15 2012  7:00:00:000PM'
declare @min datetime = FLOOR(CAST(@when as float))
declare @max datetime = DATEADD(day, 1, @min)

select * from sampleTable where DateCreated >= @min and DateCreated < @max

How to return only the Date from a SQL Server DateTime datatype

SELECT DATEADD(dd, 0, DATEDIFF(dd, 0, @your_date))

for example

SELECT DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE()))

gives me

2008-09-22 00:00:00.000

Pros:

• No varchar<->datetime conversions required
• No need to think about locale

Comparing a Date column with a datetime value

This will not yield the same result.

Let's say your DateTo, which is a DATETIME value, has a time component:

'2015-09-21 01:00:00'

Your @wkenddate is '2015-09-21'. The WHERE DateTo BETWEEN @wkstdate AND @wkenddate will not retrieve the above row since '2015-09-21 01:00:00' > @wkenddate.

For more example:

CREATE TABLE tbl(DateTo DATETIME)
INSERT INTO tbl 
    SELECT CAST('2015-09-21 00:00:00.000' AS DATETIME) UNION ALL
    SELECT CAST('2015-09-21 16:10:49.047' AS DATETIME) UNION ALL
    SELECT CAST('2015-09-22 16:10:49.047' AS DATETIME) UNION ALL
    SELECT CAST('2015-09-20 16:10:49.047' AS DATETIME) 

DECLARE  @wkstdate DATE = '20150921',
         @wkenddate DATE = '20150921'
SELECT * 
FROM tbl
WHERE DateTo BETWEEN @wkstdate AND @wkenddate

SELECT * FROM tbl
WHERE (CONVERT(DATE,DateTo) BETWEEN @wkstdate AND @wkenddate)


DROP TABLE tbl

Now, using function in WHERE clause does make your query un-SARGable but there are exceptions. One of them is CASTing to DATE.

Another alternative if you do not want to CAST to DATE is to not use the BETWEEN operator. Instead use >= and <:

WHERE
    DateTo >= @wkstdate 
    AND DateTo < DATEADD(DAY, 1, @wkenddate)

Compare only DATE from 2 datetime columns - sql

Another way:

Select * from Admissions
Where DATEDIFF(dd,AdmitDateTime,DepartDateTime)=0

SQL Server date comparisons based on month and year only

To handle inequalities, such as between, I like to convert date/times to a YYYYMM representation, either as a string or an integer. For this example:

DECLARE @date1 DATETIME = CAST('6/14/2014' AS DATETIME),
        @date2 DATETIME = CAST('6/15/2014' AS DATETIME),
        @date3 DATETIME = CAST('7/1/2014' AS DATETIME);

SELECT * FROM tableName WHERE @date2 BETWEEN @date1 AND @date3;

I would write the query as:

SELECT *
FROM tableName
WHERE year(@date2) * 100 + month(@date2) BETWEEN year(@date1) * 100 + month(@date1) AND
                                                 year(@date3) * 100 + month(@date1);

Compare Date saved as varchar with DateTime

I solved the problem using

DATEADD(SECOND, CONVERT(INT, Left(SUBSTRING(JSON_VALUE(jsonStr, '$.EndDate'), 7, 13), 10)), '19700101'

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