Redshift's Window Functions Advanced use case - Sessionization

Jiří Mauritz Data Warehouse, Redshift, Window Functions

In the last post about the Window Functions, we introduced an advanced use case, in which the window functions help to make the query more readable, simple and efficient. The problem was to find free call intervals for each customer, which are created as customers tops-up their credit for at least €20 and get free calls for the next 28 ...

Convert ESMA XML to Snowflake

Anvesh Gali XML

Introduction to this walkthrough In this walkthrough, we will demonstrate the process of loading XML data into Snowflake – a cloud based data warehousing service. We have downloaded the XML files from ESMA and then converted them into TSV files using Flexter, a powerful XML parser from Sonra. We then load the TSV files into Snowflake and execute queries. XML ...

Redshift Window Functions Advanced Use Cases

Jiří Mauritz Data Warehouse, Redshift, Window Functions

Merging time-based events into periods Thanks to our previous posts about the window functions, Introduction to Window functions on Redshift and Data exploration with Window functions on Redshift, you should now be familiar with the most common functions that can be used in the OVER clause and how to apply them to your data. Today, we introduce more advanced use ...

Convert FpML XML to BigQuery

Anvesh Gali BigQuery, XML

About this walk-through In this walk-through we will load XML files processed by Flexter into BigQuery. Flexter is a powerful XML parsing tool that can convert complex XML files into readable format which can then be loaded into BigQuery which is an enterprise data warehouse available on the Google cloud platform. FpML XML Data We have chosen the XML data ...