The Apache Calcite PMC is pleased to announce Apache Calcite release 1.26.0.

Warning: Calcite 1.26.0 has severe issues with RexNode simplification caused by SEARCH operator ( wrong data from query optimization like in CALCITE-4325, CALCITE-4352, NullPointerException), so use 1.26.0 for development only, and beware that Calcite 1.26.0 might corrupt your data.

This release comes about two months after 1.25.0 and includes more than 70 resolved issues, comprising a lot of new features and bug-fixes. Among others, it is worth highlighting the following.

• SEARCH operator and Sarg literal
• PIVOT operator in SQL
• Spatial index based on Hilbert space-filling curve
• Provide utility to visualize RelNode
• Support JDK 15 and Guava version 29.0-jre

See the release notes; download the release.