2309eff62b
Parameterized partial paths are not supported, and we have several checks in try_partial_xxx_path functions to enforce this. For a partial nestloop join path, we need to ensure that if the inner path is parameterized, the parameterization is fully satisfied by the proposed outer path. For a partial merge/hashjoin join path, we need to ensure that the inner path is not parameterized. In all cases, we need to ensure that the outer path is not parameterized. However, the comment in try_partial_hashjoin_path does not describe this correctly. This patch fixes that. In addtion, this patch simplifies the checks peformed in try_partial_hashjoin_path and try_partial_mergejoin_path with the help of macro PATH_REQ_OUTER, and also adds asserts that the outer path is not parameterized in try_partial_xxx_path functions. Author: Richard Guo Discussion: https://postgr.es/m/CAMbWs48mKJ6g_GnYNa7dnw04MHaMK-jnAEBrMVhTp2uUg3Ut4A@mail.gmail.com
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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