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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2019-12-02 18:05:29 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2019-12-02 18:05:29 -0500 |
| commit | ce76c0ba53e4bd0daf3db7a703671b27797b7244 (patch) | |
| tree | 920ca4a5cc36e169181e12cc3880f2295f28e17a /src/backend/nodes/outfuncs.c | |
| parent | 4526951d564a7eed512b4a0ac3b5893e0a115690 (diff) | |
| download | postgresql-ce76c0ba53e4bd0daf3db7a703671b27797b7244.tar.gz postgresql-ce76c0ba53e4bd0daf3db7a703671b27797b7244.zip | |
Add a reverse-translation column number array to struct AppendRelInfo.
This provides for cheaper mapping of child columns back to parent
columns. The one existing use-case in examine_simple_variable()
would hardly justify this by itself; but an upcoming bug fix will
make use of this array in a mainstream code path, and it seems
likely that we'll find other uses for it as we continue to build
out the partitioning infrastructure.
Discussion: https://postgr.es/m/12424.1575168015@sss.pgh.pa.us
Diffstat (limited to 'src/backend/nodes/outfuncs.c')
| -rw-r--r-- | src/backend/nodes/outfuncs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c index b0dcd02ff68..a80eccc2c10 100644 --- a/src/backend/nodes/outfuncs.c +++ b/src/backend/nodes/outfuncs.c @@ -2509,6 +2509,8 @@ _outAppendRelInfo(StringInfo str, const AppendRelInfo *node) WRITE_OID_FIELD(parent_reltype); WRITE_OID_FIELD(child_reltype); WRITE_NODE_FIELD(translated_vars); + WRITE_INT_FIELD(num_child_cols); + WRITE_ATTRNUMBER_ARRAY(parent_colnos, node->num_child_cols); WRITE_OID_FIELD(parent_reloid); } |