database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-02 09:02:37 +03:00
Code Activity

Add exclusion constraints, which generalize the concept of uniqueness to

Browse Source 
support any indexable commutative operator, not just equality.  Two rows
violate the exclusion constraint if "row1.col OP row2.col" is TRUE for
each of the columns in the constraint.

Jeff Davis, reviewed by Robert Haas
This commit is contained in:
Tom Lane
2009-12-07 05:22:23 +00:00
parent 8de7472b45
commit 0cb65564e5
43 changed files with 1613 additions and 236 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/backend/bootstrap/bootstrap.c
View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.253 2009/09/27 01:32:11 tgl Exp $
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.254 2009/12/07 05:22:21 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1100,6 +1100,10 @@ index_register(Oid heap,
newind->il_info->ii_Predicate = (List *)
copyObject(indexInfo->ii_Predicate);
newind->il_info->ii_PredicateState = NIL;
/* no exclusion constraints at bootstrap time, so no need to copy */
Assert(indexInfo->ii_ExclusionOps == NULL);
Assert(indexInfo->ii_ExclusionProcs == NULL);
Assert(indexInfo->ii_ExclusionStrats == NULL);
newind->il_next = ILHead;
ILHead = newind;