From: Etsuro Fujita Date: Thu, 3 Aug 2023 08:15:09 +0000 (+0900) Subject: Update comments on CustomPath struct. X-Git-Tag: REL_11_21~6 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db395e2239a2a595e937c82f1a14d225f0d02a82;p=thirdparty%2Fpostgresql.git Update comments on CustomPath struct. Commit e7cb7ee14 allowed custom scan providers to create CustomPath paths for join relations as well, but missed updating the comments. Back-patch to all supported branches. Discussion: https://postgr.es/m/CAPmGK15ODkN%2B%3DhkBCufj1HBW0x5OTb65Xuy7ryXchMdiCMpx_g%40mail.gmail.com --- diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h index c6585714182..b1884c74fd2 100644 --- a/src/include/nodes/relation.h +++ b/src/include/nodes/relation.h @@ -1269,15 +1269,18 @@ typedef struct ForeignPath } ForeignPath; /* - * CustomPath represents a table scan done by some out-of-core extension. + * CustomPath represents a table scan or a table join done by some out-of-core + * extension. * * We provide a set of hooks here - which the provider must take care to set * up correctly - to allow extensions to supply their own methods of scanning - * a relation. For example, a provider might provide GPU acceleration, a - * cache-based scan, or some other kind of logic we haven't dreamed up yet. + * a relation or joing relations. For example, a provider might provide GPU + * acceleration, a cache-based scan, or some other kind of logic we haven't + * dreamed up yet. * - * CustomPaths can be injected into the planning process for a relation by - * set_rel_pathlist_hook functions. + * CustomPaths can be injected into the planning process for a base or join + * relation by set_rel_pathlist_hook or set_join_pathlist_hook functions, + * respectively. * * Core code must avoid assuming that the CustomPath is only as large as * the structure declared here; providers are allowed to make it the first