Package: postgresql-10-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: 34 Depends: postgresql-10 Homepage: https://github.com/wulczer/first_last_agg Priority: optional Section: database Filename: pool/main/f/first-last-agg/postgresql-10-first-last-agg_0.1.4-4-gd63ea3b-6.pgdg18.04+1_i386.deb Size: 5716 SHA256: 99963dc66fde7fe55694dc958cd0f21d47963f2a7e7627ec070924db089a0b04 SHA1: fda2f899e3ef2ce3fc9a4217b9132904946408dc MD5sum: aa6840a15d4256080c97a178149d2705 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).