f6065c56d4
Suppose that a JOIN_ORDER() advice target consists of a single
ordered or unordered sublist, something like JOIN_ORDER((...))
or JOIN_ORDER({...}) or even JOIN_ORDER(({...})). In the previous
coding, the feedback for such advice would be "partially matched"
even when the query joined all the relations mentioned. Fix that.
Like the issues fixed by e1d8f81d49,
this escaped detection because advice generation never creates
advice strings that have the problematic form.
Reported-by: Ayush Tiwari <ayushtiwari.slg01@gmail.com>
Discussion: http://postgr.es/m/CAJTYsWWe8E8ya-24wRws5LSVhHNxCwLyy8c-ueY-TKvC=8P7UQ@mail.gmail.com
Discussion: http://postgr.es/m/CA+TgmoYYHC4i-Gpzc9-JYHqih6pOK+6LTYFiNR-PioXG1nKkOQ@mail.gmail.com
Backpatch-through: 19
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
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General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
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