Best way to check for current date in where clause of sql query

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I'm trying to find out the most efficient (best performance) way to check date field for current date. Currently we are using:

FROM         dbo.Job
                        AND DATEADD(d, DATEDIFF(d, 0, GETDATE()), 1))
  DateDiff(d, Received, GETDATE()) = 0

Edit: As lined out in the comments to this answer, that's not an ideal solution. Check the other answers in this thread, too.

Date and time conditions causing SQL performance problems, SQL queries using date and time conditions are easy to get wrong. To disregard the time component for a search you can use the TRUNC function on FROM sales WHERE TRUNC(sale_date) = TRUNC(sysdate - INTERVAL '1' DAY) range condition. This is a generic solution that works for all databases: SELECT . Function getdate() is retrieving the current date in the following format 2012-02-22 16:59:27.031. Check which values are exists in the field Openeddate of your table. You can see more details here -

If you just want to find all the records where the Received Date is today, and there are records with future Received dates, then what you're doing is (very very slightly) wrong... Because the Between operator allows values that are equal to the ending boundary, so you could get records with Received date = to midnight tomorrow...

If there is no need to use an index on Received, then all you need to do is check that the date diff with the current datetime is 0...

Where DateDiff(day, received, getdate()) = 0

This predicate is of course not SARGable so it cannot use an index... If this is an issue for this query then, assuming you cannot have Received dates in the future, I would use this instead...

Where Received >= DateAdd(day, DateDiff(Day, 0, getDate()), 0) 

If Received dates can be in the future, then you are probably as close to the most efficient as you can be... (Except change the Between to a >= AND < )

Current Date issue in where clause – SQLServerCentral, Current Date issue in where clause – Learn more on the #268687. I am trying to write a query that pulls our new orders for the current day. Check which values are exists in the field Openeddate of your table. Why exactly did i have to do this in the first place? select top 20 SQL-Server (Developer) I want to run a query that will get today's date and then return the current month and fiscal year. I wrote a query which is listed below. I was expecting it to return one record with 1/30/2012 as the trxDay, 1/1/2012 as the trxMonth and 2012 as the FiscalYear. This particular record is in the table but the query returns no results.

If you want performance, you want a direct hit on the index, without any CPU etc per row; as such, I would calculate the range first, and then use a simple WHERE query. I don't know what db you are using, but in SQL Server, the following works:

// ... where @When is the date-and-time we have (perhaps from GETDATE())
DECLARE @DayStart datetime, @DayEnd datetime
SET @DayStart = CAST(FLOOR(CAST(@When as float)) as datetime) -- get day only
SET @DayEnd = DATEADD(d, 1, @DayStart)

FROM         dbo.Job
WHERE     (Received >= @DayStart AND Received < @DayEnd)

Equals Today's Date in SQL - MSDN, How do i check for Today's date in where Clause ? Database Design & SQL Programming Using Microsoft SQL Server 2016 Best Regards,. SQL query Performance when using Datetime in where / On clause It would be very kind of you to tick the acceptance check below the best answer's vote counter

that's pretty much the best way to do it. you could put the DATEADD(d, DATEDIFF(d, 0, GETDATE()), 0) and DATEADD(d, DATEDIFF(d, 0, GETDATE()), 1) into variables and use those instead but i don't think that this will improve performance.

MySQL CURDATE() Function, The CURDATE() function returns the current date. Note: The date is returned as " YYYY-MM-DD" (string) or as YYYYMMDD date + 1: SELECT CURDATE() + 1;. Try now for free. Write queries, visualize data, and share your results. Share queries by URL, and organize them in folders. Works for PostgreSQL, MySQL, BigQuery

I'm not sure how you're defining "best" but that will work fine.

However, if this query is something you're going to run repeatedly you should get rid of the get_date() function and just stick a literal date value in there via whatever programming language you're running this in. Despite their output changing only once every 24 hours, get_date(), current_date(), etc. are non-deterministic functions, which means that your RDMS will probably invalidate the query as a candidate for storing in its query cache if it has one.

Convert Datetime to Date in SQL Server By Practical Examples, Summary: in this tutorial, you will learn how to convert a datetime to a DATE by using the This statement uses the CONVERT() function to convert a datetime to a date: Note that the GETDATE() function returns the current database server's datetime. SELECT INTO � PRIMARY KEY � FOREIGN KEY � CHECK Constraint � SQL Date Data Types. MySQL comes with the following data types for storing a date or a date/time value in the database: DATE - format YYYY-MM-DD; DATETIME - format: YYYY-MM-DD HH:MI:SS; TIMESTAMP - format: YYYY-MM-DD HH:MI:SS; YEAR - format YYYY or YY; SQL Server comes with the following data types for storing a date or a date/time value in the

Query date where clause:- The Query below return you the filter records from table 'employee1' on the basis of condition specified in where clause. It return you the records from the employee1 where date is '2008-12-20'.

I used this statement to retrive all the data they have value 3/29/2007 in the field of dateOfSold. When i try this statement this return empty record set. dateOfSold field is in access table sales. fieldtype is date/time. plese help me

DATE and TIME values in PostgreSQL have a whole special set of functions and operators for their proper use. So many queries deal with DATE and TIME information that it’s important to get to know the date tools. Below we’ll cover and practice the main functions you’ll likely need.

  • Please note that the answer you selected is NOT the best performance way. Your way is close to the correct way, you just need to switch to >= and < rather than using BETWEEN (which is like <= on the second condition and is incorrect).
  • I wouldn't do it that way, as it is not SARG-able.
  • @Mitch Wheat: As long as there is no column with the date part only AND an index on it, nothing you can do will be SARGable anyway.
  • Tomalak, No - his initial solution is SARGable... Where Received >= {Midnight This morning} And Received < {Midnight Tonight} is SARGable
  • What the heck is "SARG-able"?
  • That means that a search condition can be satisfied by using an index ( Calculating the value that is being filtered on makes an operation non-SARGable, because calculated values are in no index. This forces the server to look at each row individually (=slow).
  • Charles, even without the index, DateDiff(day, received, getdate()) is not best because it forces a calculation on every row in the table, using more CPU for no reason.
  • @Emtucifor, true, but compared with Disk I/O reads, cpu cycles are so insignificant as to be irelevant. We're talking about three to four orders of magnitude different here.
  • That's true, Charles. Thanks for putting my nitpicking in perspective. :) I do think it's best to recommend the latter where possible because when there IS an index, that will seriously affect I/O.
  • @Emtucifor, you are correct again.. and of course, best of all, when you have the discretion to do so, is to put the appropriate index in place, and design the queries to use them.
  • I am not sure what you mean by a "direct" hit on the index ? if you are simply talking about when there is a calculation on the "other" side of a predicate operator, instead of pre-calculating it before executing the index, then either A) the calculated value is based on some other column in the table and is not the same for generated row, so it has to be in the sql, or B) if it is the same value for every generated row, the query processor will pre-calculate it anyway, so it WILL only be calculated once, no matter how many rows the query produces.
  • This is not the best way. See Marc Gravell's post for the best way.
  • The solution suggested by Tomalak is far from the best way.