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Sound Bite: How can personalisation drive lasting value?

Will Hayes21 February 2024

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How to make an AI agent accurate in BigQuery

A year ago, I wrote about getting a BigQuery warehouse ready for AI ( Easy ways to prepare your BigQuery warehouse for AI) , but didn't look properly into Knowledge Catalog (known as Dataplex at the time). We decided to go back and look through Google's Knowledge Catalog properly: what's actually in there, how it works and what it relates to. What Knowledge Catalog is Knowledge Catalog is Google's metadata layer for BigQuery data (and a few other sources). It sits alongside your tables rather

Katie Kaczmarek15 Sept 2026

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What's actually in Google's Knowledge Catalog

Google's Knowledge Catalog has been renamed four times. Data Catalog, then Dataplex Catalog, then BigQuery universal catalog, then Dataplex Universal Catalog, and now Knowledge Catalog, as of 10 April 2026. The API, gcloud and IAM roles still all say "dataplex". If you land on a page that mentions Dataplex and wonder whether you're reading something out of date, you're probably not. That's just the product's fifth name in four years. I spent some time looking through the different sections of K

Katie Kaczmarek15 Sept 2026

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BigQuery Tips: When your query is technically correct but BigQuery won't run it

There is a particular kind of frustration that comes from staring at a query you know is correct and watching it fail. No syntax error. No logic problem. Just a wall. We hit two of them on the same project. What we were building The job was to migrate ga4_daily_snapshot for a large enterprise client from a BigQuery scheduled query into a proper Dataform pipeline. The scheduled query had been added to over time until it was too large to maintain with any confidence. Moving it to Dataform w

Katie Kaczmarek17 Aug 2026