database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-30 21:42:05 +03:00
Code Activity

Instead of rechecking lossy index operators by putting them into the

Browse Source 
regular qpqual ('filter condition'), add special-purpose code to
nodeIndexscan.c to recheck them.  This ends being almost no net addition
of code, because the removal of planner code balances out the extra
executor code, but it is significantly more efficient when a lossy
operator is involved in an OR indexscan.  The old implementation had
to recheck the entire indexqual in such cases.
This commit is contained in:
Tom Lane
2004-01-06 04:31:01 +00:00
parent fa559a86ee
commit b0c4a50bbb
8 changed files with 134 additions and 114 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/backend/nodes/outfuncs.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.228 2004/01/05 23:39:53 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.229 2004/01/06 04:31:01 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@ -356,6 +356,16 @@ _outIndexScan(StringInfo str, IndexScan *node)
_outOidList(str, lfirst(tmp));
}
}
/* this can become WRITE_NODE_FIELD when intlists are normal objects: */
{
List *tmp;
appendStringInfo(str, " :indxlossy ");
foreach(tmp, node->indxlossy)
{
_outIntList(str, lfirst(tmp));
}
}
WRITE_ENUM_FIELD(indxorderdir, ScanDirection);
}