I am selecting fields like client id, name, and service date. I am trying to write in my where clause, that every day I run my query it will capture a date range of the first of the current month to the current day.
One method would be to compare the month and the year:
where year(col) = year(getdate()) and
month(col) = month(getdate()) and
day(col) <= day(getdate()) -- this is optional, if there is no future data
Another method would be to compare to the beginning of the month. I would approach this as:
where col >= cast(dateadd(day, 1 - day(getdate), getdate()) as date)
(This assumes there is no future data in the table.)
or, better yet:
where col >= datefromparts(year(getdate()), month(getdate()), 1)
Select *
From YourTable
where SomeDateField bewteen cast(DateAdd(DD,-Day(GetDate())+1,GetDate()) as Date) and cast(getDate() as Date)
and ...
Edit: I used the BETWEEN to trap possible future date/scheduled events
Related
I have such a situation.
I need to have 2 columns 1) Is just pull data from a table (just as it is) r.[RCLDTE] (Day of week)
and 2 column) I need to basically look at the first column and make it Saturday of that week.
SELECT r.[RCLDTE] AS 'Day of Week'
,r.[RCLDTE] AS 'Week Ending Day (Saturday)'
Before what I was doing at similar projects I just used this code and added to WHERE statement.
WHERE CONVERT(DATE, CONVERT(CHAR(8), r.[RCLDTE] )) = cast(DATEADD(dd, DATEPART(DW,GETDATE())*-1, GETDATE()) as date)
This code was changing the dates column to Saturday.
However, here I have a different situation. I need 2 columns 1) as it is and 2) where dates will be Saturdays of the week from r.[RCLDTE] column , as a result from the way how I understand I cannot use WHERE statement because it will affect both columns.
Does someone know how I can leave 1st column as it is and 2nd a column of Saturday.
Please let me know.
Thanks.
To avoid issues when someone changes either DATEFIRST or LANGUAGE settings, you can use this. Also, given that you are storing dates in a numeric column for some reason (you really should provide feedback to whoever owns the system so they can fix it), we have to first try to convert those values to a date (they may not all be valid, which is one of the problems with using the wrong data type):
;WITH t AS
(
SELECT *, ProperDate = CASE WHEN ISDATE(CONVERT(char(8), RCLDTE)) = 1
THEN CONVERT(date, CONVERT(char(8), RCLDTE)) END
FROM dbo.tablename
)
SELECT [Language] = ##language, [Datefirst] = ##datefirst,
RCLDTE = CASE WHEN ProperDate IS NULL THEN RCLDTE END,
[Day of Week] = ProperDate,
[Saturday] = DATEADD
(
DAY,
6 - ((DATEPART(WEEKDAY, ProperDate) + ##DATEFIRST - 1) % 7),
ProperDate
)
FROM t;
Updated db<>fiddle that also demonstrates the handling of garbage data and a version of SQL Server so old that TRY_CONVERT() didn't exist yet (at least 12 years ago).
here is one way :
select
r.RCLDTE AS 'Day of Week'
, dateadd(day, 7 - datepart(weekday, r.RCLDTE) , r.RCLDTE)
from tablename r
db<>fiddle here
So what I am trying to do is when I run the query, I want to return all records that were in the month two months from the current month. For example, lets say the current month is November, when the query runs, I want returned all records from September and only September. If I run the query in lets say October, I want all records from August and only August. I am trying to do this in MS SQL. Thanks for any advice.
In SQL Server, you can use:
where datecol >= dateadd(month, -3, datefromparts(year(getdate()), month(getdate()), 1)) and
datecol < dateadd(month, -2, datefromparts(year(getdate()), month(getdate()), 1))
This is index- and optimizer- friendly. If you don't care about performance, you can use datediff():
where datediff(month, datecol, getdate()) = 2
This can be done in a nice 1 liner.
WHERE NOW() BETWEEN Date1 AND Date2;
You can have the month part in a variable and then it can be used in the Where clause to filter the month part of the date value is equal to the varoable value.
Query
Declare #month as int;
Set #month=datepart(month, getdate()) - 2;
Select * from yourTableName
Where month(dateCol) = #month;
The function GETDATE() can be used to retrieve the current month.
The function DATEADD(datepart,number,date) can be used to perform operations on dates. For more info look at the official docs
Thus, to retrieve the records from two months before (-2) the current month you can use the following:
DATEADD(month, -2, GETDATE())
In conclusion an example query to select all records that were in the month two months from the current month:
SELECT * FROM table
WHERE MONTH(month_column) = DATEADD(month, -2, GETDATE())
sources:
WHERE Clause to find all records in a specific month
SQL query for today's date minus two months
I have data prep procedure in SQL. I want to have data preparation at the end of every month
Say I want the procedure run on last day of month e.g. on 31 January 2020 it should prep data from 1 January to 31 January.
So it's kind of moving window over all months of the year. Because I need data for evaluation at the end of each month.
I tried this, however, this does not give automation. Its sort of manual running end of every month
select '2020-10-01' as beginDate_AnalysisWindow
, '2020 -01-31' as endDate_AnalysisWindow
into #AnalysisWindow --create temporary table #AnalysisWindow
I also tried the following, however, I’m not sure if it does for the whole month or just one day?
SELECT START_OF_MONTH_DATE AS beginDate_AnalysisWindow
,END_OF_MONTH_DATE AS endDate_AnalysisWindow
INTO #AnalysisWindow
FROM [dbo].[Date] WITH (NOLOCK)
WHERE DATE = DATEADD(dd, - 1, CAST(GETDATE() AS DATE))
Could someone pls help me/give me some suggestions.
Thanks in advance
If you want the last day of the current month, use eomonth():
WHERE DATE = CONVERT(date, EOMONTH(GETDATE()))
Note: This assumes that the date column has no time component. If that is the case:
WHERE CONVERT(date, DATE) = CONVERT(date, EOMONTH(GETDATE()))
SQL Server will still use an index (if available) even for this type of conversion.
EDIT:
To get the current months data, one method is:
WHERE DATE <= CONVERT(date, EOMONTH(GETDATE())) AND
DATE > CONVERT(date, EOMONTH(GETDATE(), -1))
The second argument to EOMONTH() is a months offset.
You can also try:
where getdate() <= EOMONTH(GETDATE()) AND
getdate() > DATEADD(DAY, 1, EOMONTH(GETDATE(), -1))
Instead of getdate(), you can use your date column.
I am trying to write 2 queries to delete records where dates are greater than a certain date:
The first one:
delete from RPT_HistSnapEng_temp
where ForecastDate> DATEADD(WEEK,7,CAST(GETDATE() AS DATE))
This query deletes records when forecastdate is greater than 7 weeks from today
The second one is:
delete from RPT_HistSnapEng_temp
where ForecastDate< DATEADD(WEEK,-6,CAST(GETDATE() AS DATE))
This query deletes records when forecastdate is less than 6 weeks from today.
So basically, this should filter out records from Dec 2015 - Nov 2016 and only show records from previous 6 weeks and next 7 weeks from today.
Even though the query runs, its not deleting records. I cannot hardcode dates because I will be using this query on a rolling basis inside a SSIS package.
Your current where clauses are trying to grab records that are both less than a date in the past AND greater than a date in the future. I think you (and the other answer) should be using or.
But, since this looks like a temp table that you are loading to then report with, I would adjust your insert to simply grab the records you are looking for, rather than loading more than you need and then deleting.
select *
from RPT_HistSnapEng -- base table name?
where cast(ForecastDate as date) between dateadd(week, -6, cast(current_timestamp as date)) and dateadd(week, 7, cast(current_timestamp as date))
Just add your insert to that if it gets the records you need.
However, to directly answer your question about deletes, you can change this query to simply use NOT between:
delete
from RPT_HistSnapEng_temp
where cast(ForecastDate as date) not between dateadd(week, -6, cast(current_timestamp as date)) and dateadd(week, 7, cast(current_timestamp as date))
As you can see, I like the use of between (which is inclusive of the date arguments) for this type of range check rather than getting caught up in using >= and < or confusing the and and or which you've seemingly done. I also like the ANSI standard current_timestamp over the t-sql specific getdate() but they are equivalent.
Try "ww" or "wk" instead of "week" in the dateadd function. Try a SELECT statement to get the records you want to delete:
SELECT ID, ForecastDate
FROM RPT_HistSnapEng_temp
WHERE CAST(ForecastDate AS DATE) > DATEADD(ww,7,CAST(GETDATE() AS DATE))
OR CAST(ForecastDate AS DATE) < DATEADD(WEEK,-6,CAST(GETDATE() AS DATE))
ORDER BY ForecastDate
To Delete just remove the SELECT and the ORDER BY:
DELETE
FROM RPT_HistSnapEng_temp
WHERE CAST(ForecastDate AS DATE) > DATEADD(ww,7,CAST(GETDATE() AS DATE))
OR CAST(ForecastDate AS DATE) < DATEADD(WEEK,-6,CAST(GETDATE() AS DATE))
I have a column with values like '3rd-Wednesday', '2nd-Tuesday', 'Every-Thursday'.
I'd like to create a column that reads those strings, and determines if that date has already come this month, and if it has, then return that date of next month. If it has not passed yet for this month, then it would return the date for this month.
Expected results (on 4/22/16) from the above would be: '05-18-2016', '05-10-2016', '04-28-2016'.
I'd prefer to do it mathematically and avoid creating a calendar table if possible.
Thanks.
Partial answer, which is by no means bug free.
This doesn't cater for 'Every-' entries, but hopefully will give you some inspiration. I'm sure there are plenty of test cases this will fail on, and you might be better off writing a stored proc.
I did try to do this by calculating the day name and day number of the first day of the month, then calculating the next wanted day and applying an offset, but it got messy. I know you said no date table but the CTE simplifies things.
How it works
A CTE creates a calendar for the current month of date and dayname. Some rather suspect parsing code pulls the day name from the test data and joins to the CTE. The where clause filters to dates greater than the Nth occurrence, and the select adds 4 weeks if the date has passed. Or at least that's the theory :)
I'm using DATEFROMPARTS to simplify the code, which is a SQL 2012 function - there are alternatives on SO for 2008.
SELECT * INTO #TEST FROM (VALUES ('3rd-Wednesday'), ('2nd-Tuesday'), ('4th-Monday')) A(Value)
SET DATEFIRST 1
;WITH DAYS AS (
SELECT
CAST(DATEADD(MONTH,DATEDIFF(MONTH,0,GETDATE()),N.Number) AS DATE) Date,
DATENAME(WEEKDAY, DATEADD(MONTH,DATEDIFF(MONTH,0,GETDATE()),N.Number)) DayName
FROM master..spt_values N WHERE N.type = 'P' AND N.number BETWEEN 0 AND 31
)
SELECT
T.Value,
CASE WHEN MIN(D.Date) < GETDATE() THEN DATEADD(WEEK, 4, MIN(D.DATE)) ELSE MIN(D.DATE) END Date
FROM #TEST T
JOIN DAYS D ON REVERSE(SUBSTRING(REVERSE(T.VALUE), 1, CHARINDEX('-', REVERSE(T.VALUE)) -1)) = D.DayName
WHERE D.Date >=
DATEFROMPARTS(
YEAR(GETDATE()),
MONTH(GETDATE()),
1+ 7*(CAST(SUBSTRING(T.Value, 1,1) AS INT) -1)
)
GROUP BY T.Value
Value Date
------------- ----------
2nd-Tuesday 2016-05-10
3rd-Wednesday 2016-05-18
4th-Monday 2016-04-25