Articles in this series
Query without FROM clause cannot have a WHERE clause, goes the old SQL adage. So I had this interesting problem the other day. Let's say an order has...
So NULLs are definitely beasts of their own and as Data Engineers we come to learn to take them into account. That is because not knowing their quirks...
A couple of months ago, I've posted about dynamically extracting key-value pairs from JSON in BigQuery SQL which leveraged regex (check...
So I've seen Snowflake has an HASH_AGG function. When would we need it? Every time we'd like to work out if ANY value in a group (or the entire table)...
A reminder that ANY_VALUE is a pretty interesting aggregation function in BigQuery SQL. It gives you a chosen row from a group. Chosen doesn't mean...
I recently encountered an interesting case that reminded me of a couple of things and taught me a few lessons. When working with BigQuery tables,...
