Package: postgresql-9.5-hypopg Source: hypopg Version: 1.1.4-2.pgdg20.04+1 Architecture: amd64 Maintainer: Julien Rouhaud Installed-Size: 69 Depends: libc6 (>= 2.4), postgresql-9.5 Homepage: https://hypopg.readthedocs.io/ Priority: optional Section: database Filename: pool/main/h/hypopg/postgresql-9.5-hypopg_1.1.4-2.pgdg20.04+1_amd64.deb Size: 19548 SHA256: c3c73f5f6a29da9c0d87b5391ed9fe3f457906325ae5ec92a1a5ad9d1d7f04ff SHA1: bdfae504a6502c4c2b1754f5184debb61891f5c9 MD5sum: 7ecef000ee991d72ee4cbae459855ea3 Description: PostgreSQL extension adding support for hypothetical indexes. An hypothetical, or virtual, index is an index that doesn't really exists, and thus doesn't cost CPU, disk or any resource to create. They're useful to know if specific indexes can increase performance for problematic queries, since you can know if PostgreSQL will use these indexes or not without having to spend resources to create them.