Package: postgresql-12-pg-hint-plan Source: pg-hint-plan-12 Version: 1.3.10-1.pgdg20.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 342 Depends: postgresql-12, postgresql-12-jit-llvm (>= 10), libc6 (>= 2.14) Homepage: https://github.com/ossc-db/pg_hint_plan Priority: optional Section: database Filename: pool/main/p/pg-hint-plan-12/postgresql-12-pg-hint-plan_1.3.10-1.pgdg20.04+1_amd64.deb Size: 131912 SHA256: 5d9282577857323178b44817ff0de6792de1d3c554ff6b8943b87d7f5e85c6fd SHA1: a754f3f142b3509a201d01546b12235221884336 MD5sum: 2e38f3d0d347da058689123e5a6b17a3 Description: support for optimizer hints in PostgreSQL PostgreSQL uses a cost-based optimizer that uses data statistics, not static rules. The planner (optimizer) estimates costs of each possible execution plans for a SQL statement, then executes the plan with the lowest cost. The planner does its best to select the best execution plan, but it is far from perfect, since it may not count some data properties, like correlation between columns. . pg_hint_plan makes it possible to tweak PostgreSQL execution plans using so-called "hints" in SQL comments, like /*+ SeqScan(a) */.