I am testing with some examples of Delta Live Tables from https://github.com/databricks/delta-live-tables-notebooks/tree/main/divvy-bike-demoI have ran all the relevant files of ingestion:python-weatherinfo-api-ingest.pypython-divvybike-api-ingest-st...
HiWe are trying to generate fake data to run our tests. For example, we have a pipeline that creates a gold layer fact table form 6 underlying source tables in our silver layer. We want to generate the data in a way that recognises the relationships ...
Hi @Nick_Hughes This may be late for your scenario - but hopefully others facing similar issues will find it useful.You can specify how data is generated in `dbldatagen` using rules in the data generation spec. If rules are specified for data generat...
Hey Guys, I'm facing this exception while trying to read public s3 bucket "Analysis Exception: [COLUMN_ALREADY_EXISTS] The column `<column name>` already exists. Consider to choose another name or rename the existing column.",also thing is I...
I get an PythonException: float() argument must be a string or a number, not 'NoneType' when attempting to save a DataFrame as a Delta Table. Here's the line of code that I am running:```df.write.format("delta").saveAsTable("schema1.df_table", mode="...
Even though the code throws the issue while write, the issue can be in the code before as spark is lazily evaluated. The error "TypeError: float() argument must be a string or a number, not 'NoneType'" generally comes when we pass a variable to float...
I have a large dataframe (>1TB) I have to save in parquet format (not delta for this use case). When I save the dataframe using .format("parquet") it results in several parquet files. I want these files to be a specific size (ie not larger than 500Mb...
In addition to the solutions provided above, we can also control the behavior by specifying maximum records per file if we have a rough estimate of how many records should be written to a file to reach 500 MB size.df.write.option("maxRecordsPerFile",...
I get an, `AnalysisException Failed to merge incompatible data types LongType and StringTypewhen attempting to run the below command, `df.write.format("delta").saveAsTable("schema.k_adhoc.df", mode="overwrite")` I am casting the column before saving:...
The issue seems to be because the job is trying to merge columns with different schema. Could you please make sure that the schema matches for the columns.
Hi, I'm wondering if this is the expected behavior when using last or last_value in a window function? I've written a query like this:select col1, col2, last_value(col2) over (partition by col1 order by col2) as column2_last from values ...
For those stumbling across this; it seems LAST_VALUE emulates the same functionality as it does in SQL Server which does not, in most people's minds, have a proper row/range frame for the window. You can adjust it with the below syntax.I understand l...
Hello everyone!I was wondering if there is any way to connect File Arrival Trigger to an on-prem file server. Can I use JDBC or ODBC? will those connect to an on-prem file server (not a SQL server)Thank you
Assume we have a given cellprint('A') print('B') print('C')I want to run only the below line.print('B')Obviously, I can seperate the cell into three and run the one I want, but this is timely. This is a feature I use so often (e.g. in pycharm) and wo...
@Volkan_Gumuskay This is also available as an option in the notebook run options.
I have a doubt row_num with order by in spark-sql gives different result(non-deterministic output) every time i execute it?​It's due to parallelism in spark ?​​Any approach how to takle it?​I order by with a date column and a integer column and take...
@Hemant If the order by clause provided yields a unique result, then we would get deterministic output. For ex:If we create a rowID for this dataset, with CustomerID used in OrderBy clause, then depending upon the runtime, we may get non-deterministi...
Has anyone come across this error before:```A schema mismatch detected when writing to the Delta table (Table ID: d4b9c839-af0b-4b62-aab5-1072d3a0fa9d). To enable schema migration using DataFrameWriter or DataStreamWriter, please set: '.option("merge...
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Hi @Yogybricks Hope you are well. Just wanted to see if you were able to find an answer to your question and would you like to mark an answer as best? It would be really helpful for the other members too. Cheers!
Is there a way to avoid having to create an external data location Simply to trigger a job when new data comes to a specific Delta Lake table?
Hi @zsucic1 Hope you are well. Just wanted to see if you were able to find an answer to your question and would you like to mark an answer as best? It would be really helpful for the other members too. Cheers!
Hi Team,I am unable to run the below command and it is giving me a parse error. Can any one point out the issue with the code:
Hi,From the error , it looks like there is no space between the brackets and the "in" keyword after the where clause. Can you please try again see if you facing the same error.
Hello!We are developing a web application in .NET, we need to consume data in gold layer, (as if we had a relational database), how can we do it? export data to sql server from gold layer?
Hi @apiury Thank you for posting your question in our community! We are happy to assist you. To help us provide you with the most accurate information, could you please take a moment to review the responses and select the one that best answers your ...
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