Package: postgresql-10-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: 42 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-8.pgdg20.04+1_amd64.deb Size: 5760 SHA256: 744b63250abaa06a1a7041c851d6514e3b822921ca57b665182ede33e8922118 SHA1: 8af41b77c0f5fa173f51cc3dfdaca0cad3efa4fe MD5sum: 8104669f61ff28daae7fcf8cf0cb3124 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).