Package: postgresql-13-first-last-agg Source: first-last-agg Version: 0.1.4-4-gd63ea3b-7.pgdg20.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 51 Depends: postgresql-13, postgresql-13-jit-llvm (>= 10) Homepage: https://github.com/wulczer/first_last_agg Priority: optional Section: database Filename: pool/main/f/first-last-agg/postgresql-13-first-last-agg_0.1.4-4-gd63ea3b-7.pgdg20.04+1_amd64.deb Size: 8776 SHA256: e5ac14e8b503fd93748acc9691c32bd504738fb06884bd6ca61102ecf2f832f1 SHA1: 2187de7a82832097f64ad1787c4817f3f9c33582 MD5sum: 7d08ea5a02a65ed439b379b51450cce5 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).