Package: postgresql-12-first-last-agg Source: first-last-agg Version: 0.1.4-4-gd63ea3b-8.pgdg20.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 51 Depends: postgresql-12, postgresql-12-jit-llvm (>= 10) Homepage: https://github.com/wulczer/first_last_agg Priority: optional Section: database Filename: pool/main/f/first-last-agg/postgresql-12-first-last-agg_0.1.4-4-gd63ea3b-8.pgdg20.04+1_amd64.deb Size: 8796 SHA256: 256ec6d551803f17f2fa3a4a38e0c8d7dcb15ad568703a13ed66e4fae94dd368 SHA1: 957eb102132d671d29c04c48f3dd92a799724fc9 MD5sum: aece642d59f3d6b5d01d63c94ae421ae Description: PostgreSQL extension providing first and last aggregate functions first-last-agg is a simple extension providing two aggregate functions, last and first, operating on any element type and returning the last or the first value of the group. . Since by default the ordering inside groups created by a GROUP BY expression is not defined, it is advisable to use an ORDER BY clause inside the aggregate expression (see the aggregate function syntax).