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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-06-10 15:22:25 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-06-10 15:22:32 -0400 |
| commit | 73b7f48f78d27b1baf1a6541cbaae0fe6bd6186d (patch) | |
| tree | c5e92bd3ae8eed8d8cf3519c10b12982d44bcfa8 /src/backend/nodes/readfuncs.c | |
| parent | c83e2029909c5411ca11fd841851016f1f9810e6 (diff) | |
| download | postgresql-73b7f48f78d27b1baf1a6541cbaae0fe6bd6186d.tar.gz postgresql-73b7f48f78d27b1baf1a6541cbaae0fe6bd6186d.zip | |
Improve run-time partition pruning to handle any stable expression.
The initial coding of the run-time-pruning feature only coped with cases
where the partition key(s) are compared to Params. That is a bit silly;
we can allow it to work with any non-Var-containing stable expression, as
long as we take special care with expressions containing PARAM_EXEC Params.
The code is hardly any longer this way, and it's considerably clearer
(IMO at least). Per gripe from Pavel Stehule.
David Rowley, whacked around a bit by me
Discussion: https://postgr.es/m/CAFj8pRBjrufA3ocDm8o4LPGNye9Y+pm1b9kCwode4X04CULG3g@mail.gmail.com
Diffstat (limited to 'src/backend/nodes/readfuncs.c')
| -rw-r--r-- | src/backend/nodes/readfuncs.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c index 2826cec2f8f..da58aad4b32 100644 --- a/src/backend/nodes/readfuncs.c +++ b/src/backend/nodes/readfuncs.c @@ -1363,10 +1363,13 @@ _readPartitionPruneInfo(void) READ_NODE_FIELD(pruning_steps); READ_BITMAPSET_FIELD(present_parts); READ_INT_FIELD(nparts); + READ_INT_FIELD(nexprs); READ_INT_ARRAY(subnode_map, local_node->nparts); READ_INT_ARRAY(subpart_map, local_node->nparts); - READ_BITMAPSET_FIELD(extparams); - READ_BITMAPSET_FIELD(execparams); + READ_BOOL_ARRAY(hasexecparam, local_node->nexprs); + READ_BOOL_FIELD(do_initial_prune); + READ_BOOL_FIELD(do_exec_prune); + READ_BITMAPSET_FIELD(execparamids); READ_DONE(); } |