| commit | 28048cbaa285b8ac46940e4b39f985d9885fc698 | |
| author | Tom Lane <tgl@sss.pgh.pa.us> | |
| Mon, 14 Mar 2016 21:31:28 +0000 (14 17:31 -0400) | ||
| committer | Tom Lane <tgl@sss.pgh.pa.us> | |
| Mon, 14 Mar 2016 21:31:28 +0000 (14 17:31 -0400) | ||
| tree | 419821d979318f9474d05d52b619fba5ad568d32 | treesnapshot (tar.gz zip) |
| parent | 307c78852f516042cebacaed411a0391bfeb2129 | commitdiff |
Allow callers of create_foreignscan_path to specify nondefault PathTarget.
Although the default choice of rel->reltarget should typically be
sufficient for scan or join paths, it's not at all sufficient for the
purposes PathTargets were invented for; in particular not for
upper-relation Paths. So break API compatibility by adding a PathTarget
argument to create_foreignscan_path(). To ease updating of existing
code, accept a NULL value of the argument as selecting rel->reltarget.
Although the default choice of rel->reltarget should typically be
sufficient for scan or join paths, it's not at all sufficient for the
purposes PathTargets were invented for; in particular not for
upper-relation Paths. So break API compatibility by adding a PathTarget
argument to create_foreignscan_path(). To ease updating of existing
code, accept a NULL value of the argument as selecting rel->reltarget.