I have this data source in druid:
I'm trying to use LATEST() to return the latest coordinates of each user active in the last minute. My intention is to show their location in realtime using a mapbox chart in superset. This is my query:
SELECT LATEST(latitude), LATEST(longitude), user_id FROM locations
WHERE __time >= CURRENT_TIMESTAMP - INTERVAL '1' minute
GROUP BY user_id
The problem is that LATEST() always return zero. Does anybody know what I'm doing wrong and how to achieve what I want using DRUID SQL?
LATEST(expr) returns the latest value of expr, which must be numeric.
If your columns is not numeric, use LATEST(expr, maxBytesPerString)
e.g:
SELECT LATEST(latitude,16), LATEST(longitude,16), user_id FROM locations
WHERE __time >= CURRENT_TIMESTAMP - INTERVAL '1' minute
GROUP BY user_id
Related
I have a table ORDERS which contains column ORDER_DATE. I have created a Chart as a Bar type. I want the chart to show the amount of orders in a given date or range.
I'm following this Youtube tutorial which shows how to create a datepicker that returns a range in a Report. I'm trying to replicate this in a chart.
What I've done so far
Created datepicker items P5_DATE_FROM and P5_DATE_TO
Changed the Series Source Type to SQL Query
select ORDER_ID,
ORDER_NUMBER,
TO_CHAR(ORDER_DATE, 'YYYY-MM-DD') AS ORDERDATE,
STORE_ID,
FULL_NAME,
EMAIL,
CITY,
STATE,
ZIP_CODE,
CREDIT_CARD,
ORDER_ITEMS,
APEX$SYNC_STEP_STATIC_ID,
APEX$ROW_SYNC_TIMESTAMP
from ORDERS_LOCAL
where TO_CHAR(ORDER_DATE, 'YYYY-MM-DD') between :P5_DATE_FROM and :P5_DATE_TO
Source Page Items to Submit added P5_DATE_FROM,P5_DATE_TO
I basically followed the exact steps of the video. However, since the video is for a report and mine is for a chart, the chart isn't actually returning any data.
I think this is because for charts there are additional fields I need to configure. I noticed the video didn't cover Column Mapping and I'm a bit confused to what to enter here.
----------------UPDATE-------------
I've followed Koen's instructions from his answer. It seems like to TO_CHAR function was causing the error. I've updated the SQL Query to below:
select ORDER_ID,
ORDER_NUMBER,
ORDER_DATE,
STORE_ID,
FULL_NAME,
EMAIL,
CITY,
STATE,
ZIP_CODE,
CREDIT_CARD,
ORDER_ITEMS,
APEX$SYNC_STEP_STATIC_ID,
APEX$ROW_SYNC_TIMESTAMP
from ORDERS_LOCAL
where ORDER_DATE between TO_DATE(:P5_DATE_FROM,'YYYY-MM-DD') and TO_DATE(:P5_DATE_TO,'YYYY-MM-DD')
However, on the Page Designer I cannot save and run page until I select Column Mapping - Label and Value. I've set the Label as ORDER_DATE but I am unsure of what to select for the Value.
Setting the Value to ORDER_DATE shows an error Ajax call returned server error ORA-01403: no data found for CHART Count Orders by Date.
and selecting any other Value such as ORDER_NUMBER or ZIP_CODE populates the chart with the actual integer value of the column (ex: ZIP_CODE returns a chart of x-axis: date, y-axis: actual zip code numbers)
I see 2 possible issues.
You submit P5_DATE_FROM and P5_DATE_TO but the source has P1_DATE_FROM and P1_DATE_TO - not sure that is a typo but it should all be the same...
The where clause is wrong. This
from ORDERS_LOCAL
where TO_CHAR(ORDER_DATE, 'MM-DD-YYYY') between :P1_DATE_FROM and :P1_DATE_TO
should be
from ORDERS_LOCAL
where ORDER_DATE between TO_DATE(:P1_DATE_FROM,'MM-DD-YYYY') and TO_DATE(:P1_DATE_TO,'MM-DD-YYYY')
Reason: the column orders_local.order_date is of datatype DATE. If you convert it to a string using TO_CHAR then it will be a string comparison, not a date comparison.
Note that bind variables P1_DATE_FROM and P1_DATE_TO are strings - they're defined in the DOM on the html page and that has no concept of oracle datatypes so everything is just a string. If they're used as such in a date comparison, you're relying on implicit conversion by the database. It's safer to do explicit conversion using the TO_DATE function.
--UPDATE--
Your question starts with "I want the chart to show the amount of orders in a given date or range.". Well... there is your answer. The "Value" is the amount of orders on each day. Update your source query to include a count of the orders and group by day. Then make your value attribute the column that has the count.
This question is a follow up to another SO question
I want a bar chart to show the amount of orders in a given date or range. Koen's updated answer shows:
'The "Value" is the amount of orders on each day. Update your source query to include a count of the orders and group by day. Then make your value attribute the column that has the count.'
How would I go about doing this?
Summary: I have a table ORDERS which contains column ORDER_DATE. I have created a Chart as a Bar type. I want the chart to show the amount of orders in a given date or range.
I'm following this Youtube tutorial which shows how to create a datepicker that returns a range in a Report. I'm trying to replicate this in a chart.
What I've done so far
Created datepicker items P5_DATE_FROM and P5_DATE_TO
Changed the Series Source Type to SQL Query
select ORDER_ID,
ORDER_NUMBER,
ORDER_DATE,
STORE_ID,
FULL_NAME,
EMAIL,
CITY,
STATE,
ZIP_CODE,
CREDIT_CARD,
ORDER_ITEMS,
APEX$SYNC_STEP_STATIC_ID,
APEX$ROW_SYNC_TIMESTAMP
from ORDERS_LOCAL
where ORDER_DATE between TO_DATE(:P5_DATE_FROM,'YYYY-MM-DD') and TO_DATE(:P5_DATE_TO,'YYYY-MM-DD')
Source Page Items to Submit added P5_DATE_FROM,P5_DATE_TO
I basically followed the exact steps of the video.
However, on the Page Designer I cannot save and run page until I select Column Mapping - Label and Value. I've set the Label as ORDER_DATE but I am unsure of what to select for the Value.
Setting the Value to ORDER_DATE shows an error Ajax call returned server error ORA-01403: no data found for CHART Count Orders by Date.
and selecting any other Value such as ORDER_NUMBER or ZIP_CODE populates the chart with the actual integer value of the column (ex: ZIP_CODE returns a chart of x-axis: date, y-axis: actual zip code numbers)
-----------UPDATE----------
Per Koen's answer, I've updated the Source SQL Query to below but I am now receiving an error.
And if I copy the exact query that Koen suggested, I run into below:
I did some messing around and found if I include APEX$SYNC_STEP_STATIC_ID and APEX$ROW_SYNC_TIMESTAMP the missing expression error goes away but instead I receive the GROUP BY error.
Something like this (untested) should work. Use TRUNC to ensure all orders on the same date are grouped (since date has a time portion, you'd have a different column for each different date time. Use ORDER_DATE as label and ORDER_COUNT as value.
select COUNT(ORDER_ID) AS ORDER_COUNT,
TRUNC(ORDER_DATE) AS ORDER_DATE,
from ORDERS_LOCAL
where ORDER_DATE between TO_DATE(:P5_DATE_FROM,'YYYY-MM-DD') and TO_DATE(:P5_DATE_TO,'YYYY-MM-DD')
GROUP BY TRUNC(ORDER_DATE)
I have Dataset in PowerBI as below.
In PowerBI Desktop I want to filter records of below table based on condition described below.
ProjectName ReleaseDate UserReleaseDate
PROJ-1 12/09/2019 null
PROJ-2 null 02/02/2019
PROJ-3 07/07/2018 null
Date are in DD/MM/YYYY format.
I want to filter those records where
(ReleaseDate OR UserReleaseDate is IsInNextNYears(1))
You pretty much just do exactly what you described.
Table.SelectRows(YourTable, each (Date.IsInNextNYears([ReleaseDate], 1) or Date.IsInNextNYears([UserReleaseDate], 1)))
If you use any filter operation on a column in Power Query it will automatically create a Table.SelectRows step that you can edit to do what you want instead.
I have this custom date that I created as a measure:
Start Date = DATE(YEAR(MAX(Loss[dte_month_end]))-1,12,31)
So this part looks fine in PowerBI and seems to be the right format.
So now I created a new column where I'm going through my data to check whether a record is equal to my "Start Date" as defined above.
IsStart = IF(Loss[dte_month_end]=[Start Date], TRUE, FALSE)
but the weird thing is that all records are evaluated to false.
I know this is actually not the case in my actual data, and I could find actual records with dte_month_end = 12/31/2017 as shown above.
Can someone help me understand why the IF statement would not be able to evaluate this correctly? I initially thought that this may be a case of the DATETIME format being inconsistent - but I purposefully changed both formats to be the same to no avail.
Thanks.
Edit1----------- FYI:
This is the format that my dte_month_end field has:
Edit2 --
I tried changing the dte_month_end format to Date instead of DateTime, and it still doesn't seem to work:
This is happening because you are using a measure inside of a calculated column. When you do this, the filter context for the measure is the row context in the table.
To fix this, you need to modify the filter context for your measure. For example:
Start Date = DATE(YEAR(CALCULATE(MAX(Loss[dte_month_end]), ALL(Loss))) - 1, 12, 31)
or
Start Date = DATE(YEAR(MAXX(ALL(Loss), Loss[dte_month_end])) - 1, 12, 31)
If you don't do this, the MAX only looks at the current row, rather than all the rows in the table.
I want to query a record which are having today's date. The cql code am trying is given below
cron = Cron.objects.filter(user_id = 5)
cron= cron.filter(created_at__gte = datetime.combine(datetime.now().date(), datetime.min.time()))
cron= cron.allow_filtering()
result = cron.first()
I don't have today's record in the table, still am getting the record which are of yesterday in the query result.
Format of date in table is '2015-10-21 08:29:41-0400' (timestamp).
I don't find any reference for this case in cqlengine documents. If anyone can help that you would be great.
In Cassandra you can not where bind or filter whatever you want there has some restriction in cassandra you query in a sequence order first partition key then clustering key.
you can query greater than today if your clustering key is timeuuid, deateime or date filed.
class Blog(Model):
content_type = Text(partition_key=True)
content_id = Date(primary_key=True)
query=Blog.object(content_type='article' and content_id__gte=datetime.now().date())
you can try this way