I have a very simple SQL which select data from a range of date. So, for example if I have,
SELECT ...... WHERE PV.[Time] BETWEEN '02/26/2014' AND '02/26/2014'
This SQL Select statement is not selecting the data in 02/26/2014. Please help
Your current statement BETWEEN '02/26/2014' AND '02/26/2014' has the same value on the left and right and so is equivalent to = '02/26/2014'.
This will only bring back rows at midnight on 26 Feb. Use
WHERE PV.[Time] >= '20140226' AND PV.[Time] < '20140227'
It's always preferable to use a non-dubious string format for dates (1/2/2000 can be interpreted as 01-feb-2000 or 02-jan-2000, depending on your local settings). I prefer the ISO format yyyymmdd or ODBC canonical yyyy-mm-dd and always use CONVERT to be explicit when handling dates. But this is not your problem :)
The problem with your query is that you are actually filtering dates BETWEEN '02/26/2014 00:00:00' AND '02/26/2014 00:00:00', thus you'll only get values at exactly the datetime. To get datetime values through whole day 02/26/2014 use the following:
SELECT ...
WHERE PV.[Time] >= '2014-02-26' AND PV.[Time] < dateadd(day, 1, '2014-02-26');
Related
I am using SQL Server Management Studio 18 against SQL Server 2016. I have some material that are in batches and those batches have expiration dates that are held as strings, but are basically in the format of 'yearmonthday', e.g. '20210312' for March 3rd, 2021. My goal is to only see material that is expiring after the current date. Whenever I try to CAST the expiration date column AS DATE within the WHERE clause, I get this error:
Conversion failed when converting date and/or time from character string
(or something similar when trying different methods).
So, right now my code looks like this:
SELECT MaterialColumn, BatchColumn, CAST(ExpirationColumn AS DATE)
FROM StockTable
WHERE CAST(ExpirationColumn AS DATE) > CAST(GETDATE() AS DATE)
If I don't do the WHERE clause, I know I can CAST the ExpirationColumn as DATE without issue, but when it's in the WHERE clause, I run into that error. Is there any way I can filter to see only the dates that I want?
You can use try_cast() instead:
SELECT MaterialColumn, BatchColumn, CAST(ExpirationColumn AS DATE)
FROM StockTable
WHERE TRY_CAST(ExpirationColumn AS DATE) > CAST(GETDATE() AS DATE);
You can also find the bad values:
SELECT ExpirationColumn
FROM StockTable
WHERE TRY_CAST(ExpirationColumn AS DATE) IS NULL AND ExpirationColumn IS NOT NULL;
It sounds like you might need to fix some data values.
Honestly, if your dates are all stored in the format yyyyMMdd then there's no need to convert. Instead use a varchar parameter, as (at least) a varchar in the format yyyyMMdd had the same sort order as a date.
As a result you just convert GETDATE to the right format:
WHERE Expiration > CONVERT(varchar(8), GETDATE(), 112)
Of course, this doesn't change my statements in the comment; fix your design, don't stores dates as a string but as a date (and time) data type.
i'm trying to define a rule that count rows where date format is dd/mm/yyyy and greater than a specific date in sql but i couldn't find the right function to use.
The second part is working : SELECT COUNT (*) FROM CUSTOMER WHERE DAT_0 >= '01/01/1995' but how could i specify the format too
In Standard SQL, the WHERE clause would look like:
WHERE DAT_0 >= DATE '1995-01-01'
Many databases would simply accept this without the DATE as well:
WHERE DAT_0 >= '1995-01-01'
In your comment DATE_0 is a date column
Therefore we can change it to any format as below using to_char then to_date
to_date(to_char(DATE_0,'yyyymmdd'),'yyyy-mm-dd')
When comparing you can try this, converting the date to_number, i find it very easy
to_number(to_char(DATE_0,'yyyymmdd')) > 19950101
if datatype of "DAT_0" is date or datetime or timestamp , they are recorded as a specific format specified by default datetime setting in your database engine , therefore you can't have multiple format inside the column , so there is no concern there
I have a Sql server table which contains below Date values(4th october)
Now Below query is not showing any result
select
*
from [dbo].[TB_AUDIT] TBA
where TBA.ActionDate >= '10/01/2018' and TBA.ActionDate <= '10/04/2018' which is not correct.
But If I write
select
*
from [dbo].[TB_AUDIT] TBA
where TBA.ActionDate >= '10/01/2018' and TBA.ActionDate <= '10/05/2018' it is returning me all results.
What I am doing wrong.
There are two problems with this query. The first, is that it's using a localized string. To me, it looks like it's asking for rows between January and April. The unambiguous date format is YYYYMMDD. YYYY-MM-DD by itself may not work in SQL server as it's still affected by the language. The ODBC date literal, {d'YYYY-MM-DD'} also works unambiguously.
Second, the date parameters have no time which defaults to 00:00. The stored dates though have a time element which means they are outside the search range, even if the date parameter was recognized.
The query should change to :
select
*
from [dbo].[TB_AUDIT] TBA
where
cast(TBA.ActionDate as date) between '20181001' and '20181004'
or
cast(TBA.ActionDate as date) between {d'2018-10-01'} and {d'2018-10-04'}
Normally, applying a function to a field prevents the server from using any indexes. SQL Server is smart enough though to convert this to a query that covers the entire date, essentially similar to
where
TBA.ActionDate >='2018:10:01T00:00' and TBA.ActionDate <'2018-10-05T00:00:00'
When you don't specify a time component for a DATETIME, SQL Server defaults it to midnight. So in your first query, you're asking for all results <='2018-10-04T00:00:00.000'. All of the data points in your table are greater than '2018-10-04T00:00:00.000', so nothing is returned.
You want
TBA.ActionDate >= '2018-10-01T00:00:00.000' and TBA.ActionDate < '2018-10-05T00:00:00.000'`
Use properly formatted dates!
select *
from [dbo].[TB_AUDIT] TBA
where TBA.ActionDate >= '2018-10-01' and TBA.ActionDate <= '2018-10-04'
YYYY-MM-DD isn't just a good idea. It is the ISO standard for date formats, recognized by most databases.
when you just filter by the date, it is with regard to the time as per the standard.
I have a column in my table for dates (DateTime) and I am trying to create a WHERE clause that says, WHERE dates BETWEEN 12-11-2012 and 12-13-2012
A sample value of dates column = 2012-05-24 00:38:40.260
I want to say WHERE dates BETWEEN MM-DD-YYYY and MM-DD-YYYY.
I tried doing
WHERE dates BETWEEN ((convert(nvarchar(10), dates,110) = '2012-12-12') AND (convert(nvarchar(10), dates,110) = '2012-12-12'))
but doesn't seem to work. "Incorrect syntax near ="
Please help
EDIT:
Thanks for various options and description guys. Got it working with #RichardTheKiwi's options.
If your dates column does not contain time information, you could get away with:
WHERE dates BETWEEN '20121211' and '20121213'
However, given your dates column is actually datetime, you want this
WHERE dates >= '20121211'
AND dates < '20121214' -- i.e. 00:00 of the next day
Another option for SQL Server 2008 onwards that retains SARGability (ability to use index for good performance) is:
WHERE CAST(dates as date) BETWEEN '20121211' and '20121213'
Note: always use ISO-8601 format YYYYMMDD with SQL Server for unambiguous date literals.
WHERE dates BETWEEN (convert(datetime, '2012-12-12',110) AND (convert(datetime, '2012-12-12',110))
Well you are trying to compare Date with Nvarchar which is wrong. Should be
Where dates between date1 And date2
-- both date1 & date2 should be date/datetime
If date1,date2 strings; server will convert them to date type before filtering.
I'm using a datediff in SQL. It returns records when run directly in sql server 2008, but when I try and run it through ODBC it doesn't bring up an error, but it returns no rows.
SELECT mc_id, mc_date_entered,
COUNT([mv_value]) total
FROM MarkbookValue t1
RIGHT JOIN MarkbookColumn t2 ON t1.mv_column_id = t2.mc_id
WHERE mc_module_id = '703000026609358'
AND DateDiff(dd, mc_date_entered, '2012-10-05 20:00:00') = 0
AND mc_type = 'KEF'
AND mc_entered_by = 'A.ADMIN'
GROUP BY
mc_id, mc_date_entered;
Getting rid of the DateDiff lets the function run correctly, but I'd obviously like to have it in there. What am I doing wrong?
YYYY-MM-DD HH:MM:SS is not a safe date format to use for a date time literal value in SQL Server. Depending on SET DATEFORMAT your month and day part might be switched.
YYYY-MM-DDTHH:MM:SS and YYYYMMDD HH:MM:SS are safe to use regardless of SET DATEFORMAT.
To get the rows for a specific date I suggest that you do as in the answer provided by #RichardTheKiwi or if you are in SQL Server 2008 you can cast your column to date to remove the time part.
where cast(mc_date_entered as date) = '2012-10-05'
YYYY-MM-DD is safe for data type date.
I would almost always write dates in ISO-8601 format, the one without dashes being YYYYMMDD.
Just would like to also point out that if you want your query to use an index on mc_date_entered and remain SARGABLE, you'll want to rewrite it like this.
SELECT mc_id, mc_date_entered, COUNT([mv_value]) total
FROM MarkbookValue t1
RIGHT JOIN MarkbookColumn t2 ON t1.mv_column_id = t2.mc_id
WHERE mc_module_id = '703000026609358'
AND mc_date_entered >= '20121005'
AND mc_date_entered < '20121006'
AND mc_type = 'KEF'
AND mc_entered_by = 'A.ADMIN'
GROUP BY
mc_id, mc_date_entered;
Are you also aware that DATEDIFF(DD only considers the date portion, so there's really no point including the time (if we were still using DATEDIFF)?