FlatFile | FlatFile is a library to work with flat files | File Utils library
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FlatFile is a library to work with flat files
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QUESTION
I have a flatfile resources that were extracted into facts and dimensions. Some dimensions also comes from db resources. The transformation process is set on as needed basis (if there are new/updated from flatfiles). The problem is this, some data reference doesn't exist or match on the dimension based on db resources so the foreign key id value on the fact is set to default (zero if no matching data).
How can i perform an update on the facts if the said dimension (db resource) has been updated? What was the best practice/routine for this kind of scenario?
This is the sample illustration
...ANSWER
Answered 2021-May-22 at 06:51Based on your example, this is the way it should work:
Note: I would expect prodcode to be be in flatfile, not product name. Is this really how your data looks? Anyway I will proceed.
First set of data arrives. Watermelon is in fact but not dimension.
QUESTION
As the title says. I cannot run h20.init.
I have already downloaded the 64 bit version of the Java SE Development Kit 8u291. I also downloaded the xgboost library in R (install.packages("xgboost") ). Finally, I have updated all my NVIDIA drivers and downloaded the latest CUDA (although, tbh I don't even know what that does). I followed the steps described in the NVIDIA forums to avoid the crash I had when installing (i.e. remove integration with visual studio). FWIW I'm using a DELL Inspiron 15 Gaming and it has a NVIDIA GTX 1050 with 4GB.
Here's the full code I'm using (straight from the h2o download instructions except for the first line):
...ANSWER
Answered 2021-May-14 at 16:27So... after a lot of poking around I found the answer. Windows Defender ughhh was blocking access to the h2o.jar. The solution was to open PowerShell on the h2o java folder and run the h2o.jar using java -jar h2o.jar. Then you'll get the security prompt asking you to authorize the program (I've had to do it every time, so you might want to check your settings). Once you do that h2o.init() runs very smoothly in R.
QUESTION
I'm having a FlatFile of Call detailed record data (CDR) There are two columns containing a string date MM/DD/YYYY and a time column with the format HH:MM:SS.s. I would like to merge these two columns into a datetime2 datatype, however, I'm not able to achieve my desired goal.
I have tried to stack two Derived Column ontop of each other with the first one converting the data format to YYYY-MM-DD using the following expression
((DT_WSTR,4)YEAR(((DT_DATE)[6]))) + "-" + RIGHT("0" + ((DT_WSTR,2)MONTH(((DT_DATE)[6]))),2) + "-" + RIGHT("0" + ((DT_WSTR,2)DAY(((DT_DATE)[6]))),2)*
* MM/DD/YYYY is stored in [6] * Validated outputs YYYY-MM-DD
Witin the second Derived Column I'm creating a column called StartDateTime
Exp: (DT_DBTIMESTAMP2,1)((DT_WSTR,10)SDATE + (DT_WSTR,10)7)
* SDATE comes from the first derive, 7 is time HH:MM:SS.s
ANSWER
Answered 2021-Mar-12 at 09:31First try to concatenate these two columns using derived column (as you say both are string type) and then use data conversion task to convert the merged column to T_DBTIMESTAMP2
QUESTION
In my case, we get the FlatFile from the source system and keep it on server and then we push this file to Amazon S3 Bucket due to some automated process.
The Source system is Mainframe which somehow puts null characters into FlatFile and its unavoidable for them. Now before we start reading FlatFile we must need to remove null characters (like we do using linux command - tr \'\\000\' \' \' < \"%s\" > \"%s\") from the file present in Amazon S3 bucket.
So far I don't see a way (not unable to find out how to do it) to remove null characters without download and once null characters got removed, then start reading it.
Note - Since we've deployed Batch App on PCF, we cant download on PCF and remove NULL characters and upload again, because PCF support team confirms that File System within PCF is transient and hence doing anything related to file is not advisable there.
...ANSWER
Answered 2021-Jan-06 at 08:40I don't know if you can change the file inline in s3 without downloading it. That said, having a transient file system does not mean not doing any file operations, it rather means don't rely on that FS for persistent storage. Any temporary file manipulation can be done on that FS without any issue.
So even if the file system on PCF is transient, I don't see any downside of downloading the file and transforming it in a tasklet step before starting the chunk-oriented processing (obviously as long as you have enough space to store the file). A SystemCommandTasklet is appropriate for your tr command. The file can be cleaned up in a final step or in a job listener.
QUESTION
I'm building my first Data Factory pipeline, a very basic one. I've a Data Flow with just source (csv flatfile) and sink (synapse table).
Source has 12 columns. So, I've created a table in Synapse (via SSMS) with all the 12 columns as varchar. No keys. Just a basic table. When I build the Data Flow activity, the previews of the data on both source and target looks perfect. But when I try to run (Debug) the pipeline, it just fails with the below error:
...ANSWER
Answered 2020-Jun-12 at 18:40You have too short column length to fit data in csv column into database table. Check that you have specified suitable field lengths for your varchar columns. Note that by default length is one character long. The document for varchar data type say for varchar(n) that:
When n isn't specified in a data definition or variable declaration statement, the default length is 1.
If you have specified length, double check that the data in csv does not contain too long values.
Mismatch in field delimiter could cause ADF to treat whole row as value for first field and it would be longer than you expect. Check field delimiter setting for the csv source. You can preview the table data in Azure portal in ADF to validate that it see the csv structure correctly.
More info in Microsoft documents at https://docs.microsoft.com/en-us/sql/t-sql/data-types/char-and-varchar-transact-sql
QUESTION
I've a fixed length content Flatfile which contains sample records like below and has no delimiter as such it contains special hex characters and data is spread across multiple lines too. But each line has constant 2000 bytes/characters and I need to keep picking the bytes from 1-2000, 2001-4000 and so on. I've fixed index characters.
Note - Here I don't want to read all characters from 2000 lines, just wanted to read based on Range.
Customer.java
...ANSWER
Answered 2020-Sep-04 at 16:55The main problem here is that FlatFileItemReader assumes you have line breaks, which you don't. The clearest solution to me is to copy/paste the class and swap out the readLine() method with one that takes in the appropriate number of characters. Unfortunately, because much of the class is private, you can't easily extend and override.
QUESTION
ANSWER
Answered 2020-Sep-04 at 08:42Assuming your array listNumbers looks like this:
QUESTION
For a flatfile blog system, i store all the data in a .txt file.
On line 7 of the txt file , there are tags stored, comma separated like below:
ANSWER
Answered 2020-Jun-19 at 18:34Your current solution will match anything where the search string is even a portion of a tag. Eg: Do a tag search for e and you'll match just about every article.
Split the tags properly and do full matching:
QUESTION
I have a CSV file with the two columns :
...ANSWER
Answered 2020-Jun-03 at 21:15You have defined your EmpID field as being Int64 which will work great when you have a digits there but in the case of no data (but a row still being present), SSIS is going to try to convert the empty string to a number and that will fail.
If you add an error pathway from the Flat File Source for truncation/error/etc you'd see rows 5+ going down that path. For this data, I'd define everything as string as you need to get the data into the pipeline and then you'll need to take action on it based on whatever business rules make sense (no name/id, trash it).
As @alex points out in the comment, the final rows indicate there are three columns of data whereas you've defined two so when the flat file source gets to that, you'll blow up. SSIS won't be able to handle inconsistent file formats like that.
QUESTION
On my Grav site I want to create a flatfile database of yaml objects that doesn't have anything to do with the site proper
Basically it will be a webpage that will draw up the collection of of objects, and if you want more information about that object, click on it and get more info. All of this just accessing the associated yaml file. ( This is a small website and is in no way sensitive data. Just a way to retrieve basic information )
I'd like it to work how Grav as a whole does, where I could go like
{{puppies.name}} and spit out the asssociated datas.
Or do a for-each and chuck out all the objects in the folder with their relevant datas
I wanted to do this in just a regular naked PHP site but I have coworkers who need to update text blocks so I decided to try a CMS.
If this is a dumb question, I'd like to know if there's a CMS where I can just denote a few text blocks/pages for admin edit and do the rest in PHP my way. Twig is really difficult to do anything custom with. But I like the idea of flatfile databases.
...ANSWER
Answered 2020-May-26 at 05:11I'm switching to wordpress. Twig is a nightmare to customize beyond being a simple templating engine, and there's very little help online to look at. It's more confusing to me than just straight up developing code. It takes so much to override anything, like you have to create whole plugins just to do something remotely custom using raw php. Too many brick walls, I gave up.
I wanted to avoid wordpress initially but it's actually so much easier to use shortcodes and write super duper custom sections that fetch custom sql tables and dump info. I wanted to avoid a really formal cookie cutter way of doing this but this seems to be best.
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