Always impressed by what PostgreSQL has built right into the core. 🐘 Needed an automatic checksum on rows and was already reaching for a trigger until I remembered / rediscovered 𝗚𝗲𝗻𝗲𝗿𝗮𝘁𝗲𝗱 𝗖𝗼𝗹𝘂𝗺𝗻𝘀. Clean, declarative, and zero trigger boilerplate needed: https://www.postgresql.org/docs/current/ddl-generated-columns.html #PostgreSQL