I want to find difference between two dates in azure ml using apply sql transformation module. After lot of search I found that DateDiff would be helpful for doing my task. Unfortunately, it's not working. It always displays the datepart as error saying that no column in database. How to resolve it.
SQL query
SELECT datediff(month,Dispatch_Date,Order_Date) as Month_Diff
from t1;
Error :- is not correct: SQL logic error or missing database no such column: month
Use abbreviation for date part instead of directly using month.
SELECT datediff(mm,Dispatch_Date,Order_Date) as Month_Diff
from t1;
Refer SQL Server documentation for more details :- SQL Server DatePart Documentation
Datediff won't work as its not SQL but SQLLite.
You should be using the SQLLite function to get the difference
For example to get the Day difference use
Cast((JulianDay(EndDate) - JulianDay(StartDate)) As Integer)
Related
This topic has been covered several times but I can't find a solution that applies to SQL Runner, which is the custom query portion of Google's Looker platform.
I am attempting to reformat a datetime SELECT statement from yyyy-mm-dd to mm-dd-yyyy.
Currently what I have is:
SELECT
CAST(shift.datetime AS DATE)
FROM table.a
This gives me the yyyy-mm-dd result but so far my efforts to CONVERT have been fruitless. It does not appear that SQL Runner supports the CONVERT command or I am utilizing it incorrectly.
Any thoughts on this one?
I believe sql runner is just gives us a way to directly access the db and it will not change any sql query while communicating with the db directly as long as the timezone of both explore as well as db matches.
Maybe something like this should work for your case
https://sql.tutorialink.com/convert-yyyymmdd-to-mm-dd-yyyy-in-snowflake/
lmk if the above works for your or not!
I have tried to make a calculated field in a query with the build tool
EindDatum: DateAdd("yyyy",1,[tblVERHURING]![DatumVerhuring])
I get an error
The expression you entered contains invalid syntax
If I use the SQL tool and type the following, I get the result I want
SELECT DATEADD("yyyy", 1, [tblVERHURING]![DatumVerhuring]) AS EindDatum
FROM tblVerhuring;
My question: is it possible to build this SQL expression with the build tool, and what should the code be?
you probably need to change the yyyy for your language.
Maybe this will help you:
EindDatum: DateAdd("jjjj",1,[tblVERHURING]![DatumVerhuring])
This works for Dutch versions of MS Access
see the related docs
I want to recover the truncated data from a table in bigquery an hour back,
I found one of the solution in legacy SQL like below:
SELECT COUNT(*) FROM [PROJECT_ID:DATASET.TABLE#-3600000]
How to achieve the same in standard sql.
Thanks
See the FOR SYSTEM TIME AS OF documentation. You would want something like this:
SELECT *
FROM `project`.dataset.table FOR SYSTEM TIME AS OF
TIMESTAMP_SUB(CURRENT_TIMESTAMP(), INTERVAL 1 HOUR)
Relative time decorator is not supported in standard sql yet. You can use absolute timestamp as the decorator in standard sql. Link from official Bigquery here.
EDIT
As per Elliott's response, its supported now in standard sql with different syntax.
I have an open query I am using to connect to a PROGRESS ODBC, I cannot get the syntax equivalent from SQL of
SELECT DATEADD(DAY, -1, GETDATE())
The Progress SQL documentation is here:
https://documentation.progress.com/output/OpenEdge117/openedge117/#page/dmsrf%2Fadd-months.html%23wwID0EGGFR
There is no DATEADD() function although there is ADD_MONTHS(). I'm not much of a SQL coder but I expect that you could probably cobble something together with the other date related functions.
I came up with the following to get records where the date is greater than two days prior:
where tr_date =
to_date({ fn convert (month(curdate()), sql_varchar)} + '/' + { fn convert(dayofmonth(curdate()) -2, sql_varchar)} + '/' + { fn convert (year(curdate()), sql_varchar)})
It heavily relies on curdate() which you apparently can't use in a select statement, only in a where clause.
In SQL Server I would have done all of this in front of the query, put the results in a variable and then used the variable in the query's where clause, but Progress also apparently doesn't have the concept of variables.
The problem with the above is that it doesn't account for the beginning of the month where substracting 2 from 1 would result in -1 and therefore an invalid date. So the algorithm to account for this becomes more complicated. All more doable if you had variables but trickier when you have to do it all on the fly.
My purpose was to generate a new query each day for an incremental data integration process using SSIS. I switched over to dynamically generating the query in SQL Server and inserting the results into an SSIS configuration table that the package reads. With that method you end up using good ol' reliable dateadd in SQL Server. That unfortunately doesn't help much if you're trying to do this in Progress with SQL there.
I am trying to extract the time from a datetime column in my Amazon Redshift database (Postgresql 8.0). I have already referred to previous questions such as this. But I am getting an unusual error.
When I try:
SELECT collected_timestamp::time
or
SELECT cast(collected_timestamp as time)
I get the following error:
ERROR: Specified types or functions (one per INFO message) not supported on Redshift tables
The goal is to pull the time portion from the timestamp such that 2017-11-06 13:03:28 returns 13:03:28.
This seems like an easy problem to solve but for some reason I am missing something. Researching that error does not lead to anything meaningful. Any help is appreciated.
Note that Redshift <> PostgreSQL - it was forked from PostgreSQL but is very different under the hood.
You're trying to cast a timestamp value to a data type of "time" which does not exist in Redshift. To return a value that is only the time component of a timestamp you will need to cast it to a character data type, e.g.:
SELECT to_char(collected_timestamp, 'HH24:MI:SS');
There are a few ways, here is one i use:
SELECT ('2018-03-07 21:55:12'::timestamp - trunc('2018-03-07 21:55:12'::timestamp))::time;
I hope that helps.
EDIT: I have made incorrect use of ::time please see comments on other answer.