Package: postgresql-13-first-last-agg Source: first-last-agg Version: 0.1.4-4-gd63ea3b-6.pgdg18.04+1 Architecture: i386 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 43 Depends: postgresql-13 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-6.pgdg18.04+1_i386.deb Size: 8432 SHA256: c2f7fc730834afade95d615f55498d4392201de770bad4ec2d471c23566e6670 SHA1: cf1237ec46654c4902a54939b9026af8c73cd9e5 MD5sum: e946c3d79440f318ba859004788f79af 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).