I'm already struggling for days to use dates from excel in a proper way in anylogic..
I've created a database in where the date is formulated as integers in different columns since otherwise excel is messing up the dates (for example year=2021 , month=12 day=5 hour=6 minute=44 second=0 stands for 2021/12/5 6:44:00)
Now I know this can be converted to a date by the function toDate(year, month, day, hour, minutes seconds). But how can I use this integers to create agent with specific parameters from the database in a source and add to a custom population?
The most simple way is to add a column where the function toDate(......) is added in the database but I do not know how to do this (see picture if it is unclear). Or are there other solutions?
One way: use Dynamic Events.
Create one and in the action code, write mySource.inject(1)
In Main, on startup, load all dbase rows and create a DE for each row, below assuming it is only with an hour-column:
(Use the database query wizard to adjust your query).
In your source object, set it to "call of inject() function"
This will work, but it is quite cumbersome, as you can see. Much easier if you get your Excel right and just import the date column clean and well so you can use the Source option "arrival table in database" directly. I know you need regular arrivals, so maybe code that up in Excel to give you these on specific dates...
Related
I am using Microsoft Access 2016. I am trying to find out how many years exist from the current year until a future year. I have a column that is end_date. I am trying to create a calculated field that is essentially YEAR(end_date) - YEAR(current_year). I tried to use YEAR(DATE()) but DATE() is not allowed to be used in a calculated field apparently.
Is there no way to do a calculation like this?
Nope. Calculated fields are cached and static, so are NEVER allowed to contain ANY information that will change over time, due to system settings, or anything else that is not directly entered in that row.
However, you should not be using calculated fields anyway. See http://allenbrowne.com/casu-14.html, among many posts advocating for not using calculated fields.
Instead, use queries to do calculations. That way, you won't have any trouble using the current date, and won't have to deal with the possible errors and portability issues calculated fields come with.
I changed my thinking to calculate this in a form. It does not seem good practice to have a field in a DB that changes everyday.
In a form, you can use this expression as controlsource for a textbox:
=DateDiff("yyyy",Date(),[EndDate])
However, that return the difference in calendar years. To find the count of full years, use a function like AgeSimple and this expression:
=AgeSimple([EndDate])
Im working on a project. My project contains a c# program and an attached database. I need to have a column to record the time, when data is inserted into my table.
My goal is to be able to report my data in different time intervals.
what I have already tried: I have included a timestamp column in my table. I thought adding a timestamp column will automaticly do the job for me. but its not recording time by itself I guess I have to enter time to it from a source.
I have searched my problem in google but there was not any how-to question. all questions were about the differences between time data types.
The best way is have a column with nvarchar(15) type and set it to
DateTime.Now.ToString();
in c# .
So, you can make strings you want with the date time like : yyyy/MM/dd or MM/yyyy/dd
maybe this url will help you :
https://learn.microsoft.com/en-us/dotnet/api/system.datetime.tostring?view=netframework-4.7.2
I had to either use CURRENT_TIMESTAMP
Microsoft suggestion for having a Timestamp
which actually I didn't use it myself in my project.
What I did do was to have a label and a timer in my C# program. I would trigger the timer with a click on a button and stop it somewhere in my program and store the time value in a variable (let's call it Timevariable). Then when I'm entering other information in my database, I would use that variable to store the time which I chose it to be a timestamp in my database with the following code:
sqlcon.Open();
SqlCommand sqlcmd = new SqlCommand("AddTime", sqlcon);
sqlcmd.CommandType = CommandType.StoredProcedure;
sqlcmd.Parameters.AddWithValue("#otherInformation",source of that Information);
sqlcmd.Parameters.AddWithValue("#QTimeStamp", Timevariable);
sqlcon.Open();
I'm using a stored procedure here.
I will try to explain the problem on an abstract level first:
I have X amount of data as input, which is always going to have a field DATE. Before, the dates that came as input (after some process) where put in a table as output. Now, I am asked to put both the input dates and any date between the minimun date received and one year from that moment. If there was originally no input for some day between this two dates, all fields must come with 0, or equivalent.
Example. I have two inputs. One with '18/03/2017' and other with '18/03/2018'. I now need to create output data for all the missing dates between '18/03/2017' and '18/04/2017'. So, output '19/03/2017' with every field to 0, and the same for the 20th and 21st and so on.
I know to do this programmatically, but on powercenter I do not. I've been told to do the following (which I have done, but I would like to know of a better method):
Get the minimun date, day0. Then, with an aggregator, create 365 fields, each has that "day0"+1, day0+2, and so on, to create an artificial year.
After that we do several transformations like sorting the dates, union between them, to get the data ready for a joiner. The idea of the joiner is to do an Full Outer Join between the original data, and the data that is going to have all fields to 0 and that we got from the previous aggregator.
Then a router picks with one of its groups the data that had actual dates (and fields without nulls) and other group where all fields are null, and then said fields are given a 0 to finally be written to a table.
I am wondering how can this be achieved by, for starters, removing the need to add 365 days to a date. If I were to do this same process for 10 years intead of one, the task gets ridicolous really quick.
I was wondering about an XOR type of operation, or some other function that would cut the number of steps that need to be done for what I (maybe wrongly) feel is a simple task. Currently I now need 5 steps just to know which dates are missing between two dates, a minimun and one year from that point.
I have tried to be as clear as posible but if I failed at any point please let me know!
Im not sure what the aggregator is supposed to do?
The same with the 'full outer' join? A normal join on a constant port is fine :) c
Can you calculate the needed number of 'dublicates' before the 'joiner'? In that case a lookup configured to return 'all rows' and a less-than-or-equal predicate can help make the mapping much more readable.
In any case You will need a helper table (or file) with a sequence of numbers between 1 and the number of potential dublicates (or more)
I use our time-dimension in the warehouse, which have one row per day from 1753-01-01 and 200000 next days, and a primary integer column with values from 1 and up ...
You've identified you know how to do this programmatically and to be fair this problem is more suited to that sort of solution... but that doesn't exclude powercenter by any means, just feed the 2 dates into a java transformation, apply some code to produce all dates between them and for a record to be output for each. Java transformation is ideal for record generation
You've identified you know how to do this programmatically and to be fair this problem is more suited to that sort of solution... but that doesn't exclude powercenter by any means, just feed the 2 dates into a java transformation, apply some code to produce all dates between them and for a record to be output for each. Java transformation is ideal for record generation
Ok... so you could override your source qualifier to achieve this in the selection query itself (am giving Oracle based example as its what I'm used to and I'm assuming your data in is from a table). I looked up the connect syntax here
SQL to generate a list of numbers from 1 to 100
SELECT (MIN(tablea.DATEFIELD) + levquery.n - 1) AS Port1 FROM tablea, (SELECT LEVEL n FROM DUAL CONNECT BY LEVEL <= 365) as levquery
(Check if the query works for you - haven't access to pc to test it at the minute)
1) I need to pass a date (billing) to the RFC, but I am not sure how to map using tmap. How to set it up (see screenshots).
2) I need to run this job daily (M-F) and I am not sure how to automate the date input
3) For the date input, I thought of using a joblet, but I can't find it in Talend. Most screenshots shows the Joblets in the same window as job designs and metadata, but I don't have it. Seen Joblet image.
As you might guessed, I am very new to Talend.
Use a tMap, and inside it use the function TalendDate.parseDate("yyyy-MM-dd", sap_data.date) in the expression field where you want the output. Also, note that the output type must be Date. The Date Pattern in the type definition (on the bottom of the tmap) is irrelevant.
Something like that:
I'm trying to create a Crystal Report that reads data from an access table. I have a particular field in the access table called REPT_YYMM. This is basically a run data field, so each month when a program is run it populates the current year/month in the field before exporting to access, so there is a way to do month to month comparisons. For the report I'm working on I just want to display the data along with the current REPT_YYMM field when the data is refreshed on a monthly basis. Is there a way to do this in a formula. I'm not familiar enough with date type functions to know where to start.
Any guidance or suggestions are appreciated!
Your question isn't very clear but if i understood correct you just need to filter the data where field REPT_YYMM = YYMM.
Goto selection formulas, record and enter:
{table.REPT_YYMM} = cStr(currentdate,'yyMM');