diff options
| -rw-r--r-- | src/backend/commands/tablecmds.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index ff27b7371f4..4c79f8f7e4d 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.332.2.2 2010/07/29 19:23:28 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.332.2.3 2010/08/03 15:47:09 rhaas Exp $ * *------------------------------------------------------------------------- */ @@ -4703,6 +4703,15 @@ ATAddCheckConstraint(List **wqueue, AlteredTableInfo *tab, Relation rel, CommandCounterIncrement(); /* + * If the constraint got merged with an existing constraint, we're done. + * We mustn't recurse to child tables in this case, because they've already + * got the constraint, and visiting them again would lead to an incorrect + * value for coninhcount. + */ + if (newcons == NIL) + return; + + /* * Propagate to children as appropriate. Unlike most other ALTER * routines, we have to do this one level of recursion at a time; we can't * use find_all_inheritors to do it in one pass. |