v1.2.78-nightly

What's Changed

Exciting New Features ✨

• feat: add json_pretty func by @akoshchiy in #12511

Thoughtful Bug Fix 🔧

• fix: cluster stats when contain null value by @zhyass in #12537

Code Refactor 🎉

• refactor: refoctor hash join state by @xudong963 in #12526
• refactor: Use OpenDAL API to avoid extra seek call by @Xuanwo in #12524

Documentation 📔

• docs: values clause by @soyeric128 in #12536

Others 📒

• chore: sync agg index supports insert into ... select ... by @ariesdevil in #12531
• chore: allow empty group by for agg index by @ariesdevil in #12542

Full Changelog: v1.2.76-nightly...v1.2.78-nightly