Category Archives: SQL

How to filter transactions by a calculated category using SQL Window Functions

Have you ever found yourself in a situation where you need to filter a set of transactions based on categories which need to be calculated from that same set? Let’s say you have a data set containing all the customer … Continue reading

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How to Load Data in Bulk to Snowflake with Alteryx

Why a post about Snowflake? What does Alteryx and Tableau have to do with Snowflake? Here is some context: as I was planning to launch my Data Lake consulting business, which is now launched, I was looking for a place … Continue reading

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10 Tricks to adopt Redshift In-DB

If you are still manipulating data in Excel, why should you care about In-DB and Redshift? Whether you are accessing your Redshift data through Alteryx or through Tableau, knowing how to prepare your data within Redshift, with In-DB tool in … Continue reading

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How to address INDB Union Error With Alteryx and Redshift

When playing with Alteryx on a Amazon Redshift database with INDB tools, have you ever come up with the impenetrable error: Error: Browse In-DB (36): Error SQLPrepare: [Amazon][RedShift ODBC] (30) Error occurred while trying to execute a query: ERROR: UNION … Continue reading

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How to easily Document your Tableau Reports

Every shiny Tableau dashboard comes, or should come, with less glamorous strings attached: documentation… If you want to share the Tableau love, you ought to document how you drove from a data source to a new indicator, and ultimately to … Continue reading

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