diff options
| author | Tom Lane | 2005-01-29 23:45:53 +0000 |
|---|---|---|
| committer | Tom Lane | 2005-01-29 23:45:53 +0000 |
| commit | 426ccf86fa6207f0715b576fe694339a45a12066 (patch) | |
| tree | 942b27ae4aa8849a6dcf0f8af059cde0c97ebb07 | |
| parent | d2190ad66e72b342840ad480ba9624a109a91eed (diff) | |
We haven't had a fixed limit on rule recursion depth since 7.3 ...
but the documentation still said so.
| -rw-r--r-- | doc/src/sgml/rules.sgml | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/doc/src/sgml/rules.sgml b/doc/src/sgml/rules.sgml index f337bccdd4d..4be1dc5e467 100644 --- a/doc/src/sgml/rules.sgml +++ b/doc/src/sgml/rules.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/rules.sgml,v 1.37.4.3 2005/01/23 00:37:23 momjian Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/rules.sgml,v 1.37.4.4 2005/01/29 23:45:53 tgl Exp $ --> <chapter id="rules"> <title>The Rule System</title> @@ -1000,12 +1000,11 @@ CREATE RULE <replaceable>rule_name</> AS ON <replaceable>event</> The query trees generated from rule actions are thrown into the rewrite system again, and maybe more rules get applied resulting in more or less query trees. - So the query trees in the rule actions must have either a different command type - or a different result relation, otherwise, this recursive process will end up in a loop. - There is a fixed recursion limit of currently 100 iterations. - If after 100 iterations there are still update rules to apply, the - rule system assumes a loop over multiple rule definitions and reports - an error. + So a rule's actions must have either a different + command type or a different result relation than the rule itself is + on, otherwise this recursive process will end up in an infinite loop. + (Recursive expansion of a rule will be detected and reported as an + error.) </para> <para> |