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-rw-r--r--src/backend/commands/explain.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index d470990e942..08480631fec 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -7,7 +7,7 @@
* Portions Copyright (c) 1994-5, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/explain.c,v 1.138 2005/10/15 02:49:15 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/explain.c,v 1.139 2005/10/21 16:43:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -196,6 +196,15 @@ ExplainOneQuery(Query *query, ExplainStmt *stmt, TupOutputState *tstate)
/* plan the query */
plan = planner(query, isCursor, cursorOptions, NULL);
+ /*
+ * Update snapshot command ID to ensure this query sees results of any
+ * previously executed queries. (It's a bit cheesy to modify
+ * ActiveSnapshot without making a copy, but for the limited ways in
+ * which EXPLAIN can be invoked, I think it's OK, because the active
+ * snapshot shouldn't be shared with anything else anyway.)
+ */
+ ActiveSnapshot->curcid = GetCurrentCommandId();
+
/* Create a QueryDesc requesting no output */
queryDesc = CreateQueryDesc(query, plan,
ActiveSnapshot, InvalidSnapshot,