Passing status messages and results back from Databricks to ADF
When we use ADF to call Databricks we can pass parameters, nice. When we finish running the Databricks notebook we often want to return something back to ADF so...
2020-02-05
18 reads
Ed Elliott
Spark Delta Lake, Updates, Deletes and Time Travel
When you use delta lake there are a couple of interesting things to note based around the fact that the data is stored in parquet files which are read-only...
2020-01-20
21 reads
Spark Delta Lake, Updates, Deletes and Time Travel
When you use delta lake there are a couple of interesting things to note based around the fact that the data is stored in parquet files which are read-only...
2020-01-20
6 reads
SQLCover 0.5 - Fixes, smaller features and an exciting surprise
It has been a little while but I have updated SQLCover to include a number of fixes and small features, the majority of which are improvements to the html...
2019-10-30 (first published: 2019-10-16)
419 reads
Validating upstream data quality in ETL processes, SQL edition
It is a non-null constraint, not a non-ish-null constraint You are writing an ETL process, part of this process you need to import a semi-structured file (think CSV, JSON,...
2019-10-28
178 reads
Validating upstream data quality in ETL processes, SQL edition
It is a non-null constraint, not a non-ish-null constraint You are writing an ETL process, part of this process you need to import a semi-structured file (think CSV, JSON,...
2019-10-28
11 reads
SQLCover 0.5 - Fixes, smaller features and an exciting surprise
It has been a little while but I have updated SQLCover to include a number of fixes and small features, the majority of which are improvements to the html...
2019-10-16
13 reads
How to test ETL Processes in production
This is the final part in the four-part series into testing ETL pipelines, how exciting!
Part 1 - Unit Testing https://the.agilesql.club/2019/07/how-do-we-test-etl-pipelines-part-one-unit-tests/ Part 2 - Integration Testing https://the.agilesql.club/2019/08/how-do-we-prove-our-etl-processes-are-correct-how-do-we-make-sure-upstream-changes-dont-break-our-processes-and-break-our-beautiful-data/ Part 3...
2019-10-02
138 reads
How to test ETL Processes in production
This is the final part in the four-part series into testing ETL pipelines, how exciting!
Part 1 - Unit Testing https://the.agilesql.club/2019/07/how-do-we-test-etl-pipelines-part-one-unit-tests/ Part 2 - Integration Testing https://the.agilesql.club/2019/08/how-do-we-prove-our-etl-processes-are-correct-how-do-we-make-sure-upstream-changes-dont-break-our-processes-and-break-our-beautiful-data/ Part 3...
2019-10-02
10 reads
How to connect spark to ms sql server without '[Error] [JvmBridge] java.sql.SQLException: No suitable driver'?
“[Error] [JvmBridge] java.sql.SQLException: No suitable driver” - unable to connect spark to Microsoft SQL Server.
In spark when you want to connect to a database you use Read() passing in...
2019-10-01
431 reads
Blogs
Keeping Redshift System Table History Past 7 Days with S3 Tables
Redshift keeps its SYS_* monitoring views for seven days in cluster, which is fine...
Updating the Data API Builder
By Steve Jones
I was updating my session for the Data API Builder (DAB) recently, mostly to...
T-SQL Tuesday #202 Invitation: That One SQL Server Outage You’ll Never Forget
I am excited to host T-SQL Tuesday for the first time. I want to...
Forums
Practical Ways to Approach SQL Server Problems and Case Studies
Working with SQL Server can involve more than just writing queries. Understanding database design,...
Measuring Productivity
Comments posted to this topic are about the item Measuring Productivity
Importing Excel files into SQL Server using DuckDB and Python
Comments posted to this topic are about the item Importing Excel files into SQL...
Question of the Day
Tracking All the Queries
I have 3 instances of a brand new long running query that are executing on a SQL Server 2025 instance. Query store is enabled. One of the queries is killed by the administrator, one is cancelled by the user. The other runs to completion. How many rows are in Query Store for this query?
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