Prior to SQL Server 2017, query processing was a monolithic process. The SQL Server query optimizer would first construct a query plan for a batch of T-SQL code, a stored procedure, or function and ...

Query processing and optimisation form the backbone of relational database management, transforming high‐level declarative requests into efficient execution strategies. The pipeline begins with ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Lily Mara explains how to avoid high-risk ...

I attempted to fix a bug in MemberHub's visual query builder where columns from the target table were missing when joining a child sheet to a base sheet. Although the Python tests calling the function ...

When you want to consolidate monthly CSVs into a single table, your first instinct is to look for Power Query operations. However, if the shapes of the original files are inconsistent, problems such ...

Facebook has released Presto -- a distributed SQL query engine optimized for running ad-hoc interactive queries on data sources up to petabytes in size -- to the open source community under the Apache ...