Prevent EXPLAIN (without ANALYZE) SELECT ... INTO from creating an INTO

table.  Needed due to recent change that makes us call ExecutorStart
even when not planning to carry out the query.

src/backend/commands/explain.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994-5, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.104 2003/03/10 03:53:49 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.105 2003/04/03 22:35:48 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -193,6 +193,14 @@ ExplainOnePlan(QueryDesc *queryDesc, ExplainStmt *stmt,
 	ExplainState *es;
 	StringInfo	str;
 
+	/*
+	 * If we are not going to execute, suppress any SELECT INTO marker.
+	 * Without this, ExecutorStart will create the INTO target table,
+	 * which we don't want.
+	 */
+	if (!stmt->analyze)
+		queryDesc->parsetree->into = NULL;
+
 	gettimeofday(&starttime, NULL);
 
 	/* call ExecutorStart to prepare the plan for execution */