I'm relatively new to SQL and have been attempting to run a script wherein I can bring up the number of days that have passed between two points in time. I understand how this should look based on your website, but for some reason when I input the values, my database is returning the following error:
ProgrammingError: ERROR: column "day" does not exist
The code I'm using is:
select datediff(day, '2014-01-01', '2014-02-01')
I assume I'm missing something very simple (this is a hugely basic query I'm sure), but would be appreciative of any assistance. I've variously tried pointing it towards the specific table I want to draw from, but it keeps stumbling on this error.
If you are doing this in postgresql then use
select DATE_PART('day', '2014-01-01'::timestamp - '2014-02-01'::timestamp)
Related
Just learning SQL and I've searched many options about converting a DateTime into a Date, and I do not want current date. It's a super simple query from this website: https://sqlzoo.net/wiki/Guest_House_Assessment_Easy
SELECT booking_date, nights
FROM booking
WHERE guest_id=1183
But the output is with the timestamp and I just want the date. I've searched so many forums and tried all their suggestions, including this:
SELECT CONVERT(varchar(10), <col>, 101)
So I've done:
SELECT CONVERT(varchar(10), booking_date,101), nights
FROM booking
WHERE guest_id=1183
But I'm getting syntax errors. This is probably so simple and you'll all think me an idiot, but I'd greatly appreciate help. It's driving me nuts.
When I fiddled about at your sqlzoo link I got the error
execute command denied to user 'scott'#'localhost' for routine 'gisq.to_date'`.
When I googled gisq.to_date I got this link https://sqlzoo.net/wiki/Format_a_date_and_time
Which has examples of how this dialect represents dates. See if you can work it out. Something like this:
SELECT date_format(booking_date,'%d/%m/%Y')
FROM booking
You didn't post the error in your question which is a big mistake. When you get an error message, you actually have something to work from.
It is also very important to note that the query above returns a string, not a date. It's only good for display, not for date arithmetic
TBH that seems like a terrible site to learn on as it gives no clues about the dialect. it looks like Oracle but to_date and trunc don't work.
The use of convert() suggests that you think you are uinsg SQL Server. If you only want the date component of a date/time data type, then you can use:
SELECT CONVERT(DATE, booking_date), nights
FROM booking
WHERE guest_id = 1183;
The syntax error suggests that you are not using SQL Server.
CONVERT() is bespoke syntax for SQL Server. Examples of similar functionality in other databases are:
DATE(booking_date)
TRUNC(booking_date)
DATE_TRUNC('day', booking_date)
In addition, what you see also depends on the user-interface.
In your case, the data is being stored as a date with no time component, but the UI is showing the time. For that, you want to convert to a string. That site uses MariaDB -- which is really a flavor of MySQL-- and you would use:
DATE_FORMAT(booking_date, '%Y-%m-%d')
I have been encountering a very strange error while working on a postgre server. I have a column which contains times as varchar in the format HH24MMSS and I have to convert it to a timestamp using to_timestamp(varchar, 'HH24MMSS'). However, it returns me wrong values and I cannot understand why. Here are a few examples:
Select to_timestamp('111111', 'HH24MMSS')
-> 11:00:11
Select to_timestamp('000000', 'HH24MMSS')
-> 00:00:00
Select to_timestamp('122317', 'HH24MMSS')
-> 12:06:49
Here A Short Overview:
Unfortunately, I cannot offer more detailed information about the server since I am not the admin nor the one maintaining it. I only know that it is Postgre 9.2. I really do not understand, what is wrong here. I would appreciate any hint or help.
Thanks for the comments. The "MM" is part of the problem and explains why the minutes have not been translated correctly. However, using the correct function with 'MI' instead of 'MM' still delivers weird values. For some reasons, postgre automatically adds 6:32 to add time:
enter image description here
I'm probably missing something basic here, but I can't for the life of me get this working.
I have a database that is tracking when certain projects are completed, and I want to be able to show in a list the completed projects between a date range.
The date range to check between is set by the user on a form.
I have built a query in Access:
SELECT Logs.Completed
FROM Logs
WHERE Logs.Completed BETWEEN Forms!UIBrowseCompleted!Text53 AND Forms!UIBrowseCompleted!Text55
ORDER BY Logs.Completed;
I have got the dates formatted in the text box so they are in #MM/DD/YYYY# format (I have manually put these dates direct in the query and this works) but when I run the query I get the following error:
This expression is typed incorrectly, or it is too complex to be evaluated. For example, a numeric expression may contain too many complicated elements. Try simplifying the expression by assigning parts of the expression to variables.
I have tried modifying the query to take the # out of the text fields in the form, and including ' around the Forms!UIBrowseCompleted!Text53 but I've still not got any joy from it.
has anyone had this issue before, or can anyone point me in the right direction.
Thanks
Do you want MS Access query or SQL query?
If you want MS Access query then you can try with following
SELECT Logs.Completed
FROM Logs
WHERE Logs.Completed >= Forms!UIBrowseCompleted!Text53 AND Logs.Completed <= Forms!UIBrowseCompleted!Text55
ORDER BY Logs.Completed;
between query will take time normally we use >= and <= to check date range
like
>= Forms!UIBrowseCompleted!Text53 AND Logs.Completed <= Forms!UIBrowseCompleted
I'm trying to filter out and report records in a database that fall between a specified date range. I'm there are other threads here on how to do something similar, but my dates are stored as date timestamps (which is why I think the issue is arising)
My current query is as follows:
"SELECT * FROM JOURNAL WHERE Date_Time>'10/10/2013 00:00:00'"
(Note that journal is the name of the table I'm pulling the data from and date_time is the field in which the date is stored. I'm aware the query doesn't quite do what I want it to yet, but I was just testing out a simpler case at first.)
When I run this query (as part of an excel macro), excel reports that it can't find any records even though I know their are records past this date. Does anyone know how to do this properly?
Edit: I've got it, it was an issue unrelated to the query (something else in the macro) Thanks so much for the help (changing the date format worked)
have you tried other date format? like this:
"SELECT * FROM JOURNAL WHERE Date_Time>'2013-10-10:00:00:00'"
A simple between statement is what you need:
SELECT * FROM JOURNAL WHERE Date_Time between '10/10/2013 00:00:00' and '[otherdate]'
You need to run this to check for one important thing: If the server is running the BETWEEN as inclusive or not. If it's inclusive, both dates are included. If not, the range will begin either before or after one or both.
I've seen SQL servers that are the same in every respect actually treat this condition differently. So it's a good idea to check that.
I am using Jet SQL from excel using an ADODB connection to an IBM400 server to try and and get some data. I have done this fine before and it is fine with all other JET SQL commands however I have ran into a problem to which I am unable to solve. It is quite simple so I imagine that I am just not putting the correct syntax in but what I am trying to do is get some totals.
I have a table that contains part numbers and quantities within the locations of that part (more than one location per part). My goal is to have an sql command grab the total quantity (summing all locations) per part. I am able to do this one part at a time successfuly using: (for simplicity I will use part numbers 12345678 and 01234567)
SELECT SUM(CPJDDTA81.F4101JD.LIPQOH) FROM CPJDDTA81.F4101JD WHERE CPJDDTA81.F4101JD.IMLITM = '12345678'
CPJDDTA81.F4101JD is my table, IMLITM is the column name of part numbers, LIPQOH is the quantity on hand per location.
The single search produces the sum I want however the problem comes when trying to run more than one sum within one sql command. I have tried using a select iif command like the following:
SELECT IIF(CPJDDTA81.F4101JD.IMLITM = '12345678',SUM(CPJDDTA81.F4101JD.LIPQOH),IIF(CPJDDTA81.F4101JD.IMLITM = '01234567',SUM(CPJDDTA81.F4101JD.LIPQOH),0) FROM CPJDDTA81.F4101JD
This command provides an error saying that "=" is not a valid token (the = sign within the IIF statement). I was hoping that someone out there can help me write a correct statement to accomplish this. My actual part list will be much larger so I will be using VBA to construct the SQL statement but I need to learn how to do two parts first. Thanks ahead of time.
SELECT CPJDDTA81.F4101JD.IMLITM, SUM(CPJDDTA81.F4101JD.LIPQOH) AS TotalQuantity
FROM CPJDDTA81.F4101JD
GROUP BY CPJDDTA81.F4101JD.IMLITM
Does the above help?
Additional, the items can be limited by adding a WHERE clause.
SELECT CPJDDTA81.F4101JD.IMLITM, SUM(CPJDDTA81.F4101JD.LIPQOH) AS TotalQuantity
FROM CPJDDTA81.F4101JD
WHERE CPJDDTA81.F4101JD.IMLITM IN ('12345678', '01234567')
GROUP BY CPJDDTA81.F4101JD.IMLITM