Remove accidentally-committed .orig file.

1 files changed, 0 insertions, 945 deletions

diff --git a/src/backend/rewrite/rewriteDefine.c.orig b/src/backend/rewrite/rewriteDefine.c.orig
deleted file mode 100644
index a1a9808e5d9..00000000000
--- a/src/backend/rewrite/rewriteDefine.c.orig
+++ /dev/null
@@ -1,945 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * rewriteDefine.c
- *	  routines for defining a rewrite rule
- *
- * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- *	  src/backend/rewrite/rewriteDefine.c
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres.h"
-
-#include "access/heapam.h"
-#include "access/htup_details.h"
-#include "access/multixact.h"
-#include "access/transam.h"
-#include "access/xact.h"
-#include "catalog/catalog.h"
-#include "catalog/dependency.h"
-#include "catalog/heap.h"
-#include "catalog/indexing.h"
-#include "catalog/namespace.h"
-#include "catalog/objectaccess.h"
-#include "catalog/pg_rewrite.h"
-#include "catalog/storage.h"
-#include "miscadmin.h"
-#include "nodes/nodeFuncs.h"
-#include "parser/parse_utilcmd.h"
-#include "rewrite/rewriteDefine.h"
-#include "rewrite/rewriteManip.h"
-#include "rewrite/rewriteSupport.h"
-#include "utils/acl.h"
-#include "utils/builtins.h"
-#include "utils/inval.h"
-#include "utils/lsyscache.h"
-#include "utils/rel.h"
-#include "utils/syscache.h"
-#include "utils/tqual.h"
-
-
-static void checkRuleResultList(List *targetList, TupleDesc resultDesc,
-					bool isSelect);
-static bool setRuleCheckAsUser_walker(Node *node, Oid *context);
-static void setRuleCheckAsUser_Query(Query *qry, Oid userid);
-
-
-/*
- * InsertRule -
- *	  takes the arguments and inserts them as a row into the system
- *	  relation "pg_rewrite"
- */
-static Oid
-InsertRule(char *rulname,
-		   int evtype,
-		   Oid eventrel_oid,
-		   AttrNumber evslot_index,
-		   bool evinstead,
-		   Node *event_qual,
-		   List *action,
-		   bool replace)
-{
-	char	   *evqual = nodeToString(event_qual);
-	char	   *actiontree = nodeToString((Node *) action);
-	Datum		values[Natts_pg_rewrite];
-	bool		nulls[Natts_pg_rewrite];
-	bool		replaces[Natts_pg_rewrite];
-	NameData	rname;
-	Relation	pg_rewrite_desc;
-	HeapTuple	tup,
-				oldtup;
-	Oid			rewriteObjectId;
-	ObjectAddress myself,
-				referenced;
-	bool		is_update = false;
-
-	/*
-	 * Set up *nulls and *values arrays
-	 */
-	MemSet(nulls, false, sizeof(nulls));
-
-	namestrcpy(&rname, rulname);
-	values[Anum_pg_rewrite_rulename - 1] = NameGetDatum(&rname);
-	values[Anum_pg_rewrite_ev_class - 1] = ObjectIdGetDatum(eventrel_oid);
-	values[Anum_pg_rewrite_ev_attr - 1] = Int16GetDatum(evslot_index);
-	values[Anum_pg_rewrite_ev_type - 1] = CharGetDatum(evtype + '0');
-	values[Anum_pg_rewrite_ev_enabled - 1] = CharGetDatum(RULE_FIRES_ON_ORIGIN);
-	values[Anum_pg_rewrite_is_instead - 1] = BoolGetDatum(evinstead);
-	values[Anum_pg_rewrite_ev_qual - 1] = CStringGetTextDatum(evqual);
-	values[Anum_pg_rewrite_ev_action - 1] = CStringGetTextDatum(actiontree);
-
-	/*
-	 * Ready to store new pg_rewrite tuple
-	 */
-	pg_rewrite_desc = heap_open(RewriteRelationId, RowExclusiveLock);
-
-	/*
-	 * Check to see if we are replacing an existing tuple
-	 */
-	oldtup = SearchSysCache2(RULERELNAME,
-							 ObjectIdGetDatum(eventrel_oid),
-							 PointerGetDatum(rulname));
-
-	if (HeapTupleIsValid(oldtup))
-	{
-		if (!replace)
-			ereport(ERROR,
-					(errcode(ERRCODE_DUPLICATE_OBJECT),
-					 errmsg("rule \"%s\" for relation \"%s\" already exists",
-							rulname, get_rel_name(eventrel_oid))));
-
-		/*
-		 * When replacing, we don't need to replace every attribute
-		 */
-		MemSet(replaces, false, sizeof(replaces));
-		replaces[Anum_pg_rewrite_ev_attr - 1] = true;
-		replaces[Anum_pg_rewrite_ev_type - 1] = true;
-		replaces[Anum_pg_rewrite_is_instead - 1] = true;
-		replaces[Anum_pg_rewrite_ev_qual - 1] = true;
-		replaces[Anum_pg_rewrite_ev_action - 1] = true;
-
-		tup = heap_modify_tuple(oldtup, RelationGetDescr(pg_rewrite_desc),
-								values, nulls, replaces);
-
-		simple_heap_update(pg_rewrite_desc, &tup->t_self, tup);
-
-		ReleaseSysCache(oldtup);
-
-		rewriteObjectId = HeapTupleGetOid(tup);
-		is_update = true;
-	}
-	else
-	{
-		tup = heap_form_tuple(pg_rewrite_desc->rd_att, values, nulls);
-
-		rewriteObjectId = simple_heap_insert(pg_rewrite_desc, tup);
-	}
-
-	/* Need to update indexes in either case */
-	CatalogUpdateIndexes(pg_rewrite_desc, tup);
-
-	heap_freetuple(tup);
-
-	/* If replacing, get rid of old dependencies and make new ones */
-	if (is_update)
-		deleteDependencyRecordsFor(RewriteRelationId, rewriteObjectId, false);
-
-	/*
-	 * Install dependency on rule's relation to ensure it will go away on
-	 * relation deletion.  If the rule is ON SELECT, make the dependency
-	 * implicit --- this prevents deleting a view's SELECT rule.  Other kinds
-	 * of rules can be AUTO.
-	 */
-	myself.classId = RewriteRelationId;
-	myself.objectId = rewriteObjectId;
-	myself.objectSubId = 0;
-
-	referenced.classId = RelationRelationId;
-	referenced.objectId = eventrel_oid;
-	referenced.objectSubId = 0;
-
-	recordDependencyOn(&myself, &referenced,
-			 (evtype == CMD_SELECT) ? DEPENDENCY_INTERNAL : DEPENDENCY_AUTO);
-
-	/*
-	 * Also install dependencies on objects referenced in action and qual.
-	 */
-	recordDependencyOnExpr(&myself, (Node *) action, NIL,
-						   DEPENDENCY_NORMAL);
-
-	if (event_qual != NULL)
-	{
-		/* Find query containing OLD/NEW rtable entries */
-		Query	   *qry = (Query *) linitial(action);
-
-		qry = getInsertSelectQuery(qry, NULL);
-		recordDependencyOnExpr(&myself, event_qual, qry->rtable,
-							   DEPENDENCY_NORMAL);
-	}
-
-	/* Post creation hook for new rule */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   RewriteRelationId, rewriteObjectId, 0, NULL);
-
-	heap_close(pg_rewrite_desc, RowExclusiveLock);
-
-	return rewriteObjectId;
-}
-
-/*
- * DefineRule
- *		Execute a CREATE RULE command.
- */
-Oid
-DefineRule(RuleStmt *stmt, const char *queryString)
-{
-	List	   *actions;
-	Node	   *whereClause;
-	Oid			relId;
-
-	/* Parse analysis. */
-	transformRuleStmt(stmt, queryString, &actions, &whereClause);
-
-	/*
-	 * Find and lock the relation.	Lock level should match
-	 * DefineQueryRewrite.
-	 */
-	relId = RangeVarGetRelid(stmt->relation, AccessExclusiveLock, false);
-
-	/* ... and execute */
-	return DefineQueryRewrite(stmt->rulename,
-							  relId,
-							  whereClause,
-							  stmt->event,
-							  stmt->instead,
-							  stmt->replace,
-							  actions);
-}
-
-
-/*
- * DefineQueryRewrite
- *		Create a rule
- *
- * This is essentially the same as DefineRule() except that the rule's
- * action and qual have already been passed through parse analysis.
- */
-Oid
-DefineQueryRewrite(char *rulename,
-				   Oid event_relid,
-				   Node *event_qual,
-				   CmdType event_type,
-				   bool is_instead,
-				   bool replace,
-				   List *action)
-{
-	Relation	event_relation;
-	int			event_attno;
-	ListCell   *l;
-	Query	   *query;
-	bool		RelisBecomingView = false;
-	Oid         ruleId = InvalidOid;
-
-	/*
-	 * If we are installing an ON SELECT rule, we had better grab
-	 * AccessExclusiveLock to ensure no SELECTs are currently running on the
-	 * event relation. For other types of rules, it would be sufficient to
-	 * grab ShareRowExclusiveLock to lock out insert/update/delete actions and
-	 * to ensure that we lock out current CREATE RULE statements; but because
-	 * of race conditions in access to catalog entries, we can't do that yet.
-	 *
-	 * Note that this lock level should match the one used in DefineRule.
-	 */
-	event_relation = heap_open(event_relid, AccessExclusiveLock);
-
-	/*
-	 * Verify relation is of a type that rules can sensibly be applied to.
-	 */
-	if (event_relation->rd_rel->relkind != RELKIND_RELATION &&
-		event_relation->rd_rel->relkind != RELKIND_VIEW)
-		ereport(ERROR,
-				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
-				 errmsg("\"%s\" is not a table or view",
-						RelationGetRelationName(event_relation))));
-
-	if (!allowSystemTableMods && IsSystemRelation(event_relation))
-		ereport(ERROR,
-				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
-				 errmsg("permission denied: \"%s\" is a system catalog",
-						RelationGetRelationName(event_relation))));
-
-	/*
-	 * Check user has permission to apply rules to this relation.
-	 */
-	if (!pg_class_ownercheck(event_relid, GetUserId()))
-		aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_CLASS,
-					   RelationGetRelationName(event_relation));
-
-	/*
-	 * No rule actions that modify OLD or NEW
-	 */
-	foreach(l, action)
-	{
-		query = (Query *) lfirst(l);
-		if (query->resultRelation == 0)
-			continue;
-		/* Don't be fooled by INSERT/SELECT */
-		if (query != getInsertSelectQuery(query, NULL))
-			continue;
-		if (query->resultRelation == PRS2_OLD_VARNO)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("rule actions on OLD are not implemented"),
-					 errhint("Use views or triggers instead.")));
-		if (query->resultRelation == PRS2_NEW_VARNO)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("rule actions on NEW are not implemented"),
-					 errhint("Use triggers instead.")));
-	}
-
-	if (event_type == CMD_SELECT)
-	{
-		/*
-		 * Rules ON SELECT are restricted to view definitions
-		 *
-		 * So there cannot be INSTEAD NOTHING, ...
-		 */
-		if (list_length(action) == 0)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-			   errmsg("INSTEAD NOTHING rules on SELECT are not implemented"),
-					 errhint("Use views instead.")));
-
-		/*
-		 * ... there cannot be multiple actions, ...
-		 */
-		if (list_length(action) > 1)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("multiple actions for rules on SELECT are not implemented")));
-
-		/*
-		 * ... the one action must be a SELECT, ...
-		 */
-		query = (Query *) linitial(action);
-		if (!is_instead ||
-			query->commandType != CMD_SELECT ||
-			query->utilityStmt != NULL)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-				 errmsg("rules on SELECT must have action INSTEAD SELECT")));
-
-		/*
-		 * ... it cannot contain data-modifying WITH ...
-		 */
-		if (query->hasModifyingCTE)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("rules on SELECT must not contain data-modifying statements in WITH")));
-
-		/*
-		 * ... there can be no rule qual, ...
-		 */
-		if (event_qual != NULL)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("event qualifications are not implemented for rules on SELECT")));
-
-		/*
-		 * ... the targetlist of the SELECT action must exactly match the
-		 * event relation, ...
-		 */
-		checkRuleResultList(query->targetList,
-							RelationGetDescr(event_relation),
-							true);
-
-		/*
-		 * ... there must not be another ON SELECT rule already ...
-		 */
-		if (!replace && event_relation->rd_rules != NULL)
-		{
-			int			i;
-
-			for (i = 0; i < event_relation->rd_rules->numLocks; i++)
-			{
-				RewriteRule *rule;
-
-				rule = event_relation->rd_rules->rules[i];
-				if (rule->event == CMD_SELECT)
-					ereport(ERROR,
-						  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-						   errmsg("\"%s\" is already a view",
-								  RelationGetRelationName(event_relation))));
-			}
-		}
-
-		/*
-		 * ... and finally the rule must be named _RETURN.
-		 */
-		if (strcmp(rulename, ViewSelectRuleName) != 0)
-		{
-			/*
-			 * In versions before 7.3, the expected name was _RETviewname. For
-			 * backwards compatibility with old pg_dump output, accept that
-			 * and silently change it to _RETURN.  Since this is just a quick
-			 * backwards-compatibility hack, limit the number of characters
-			 * checked to a few less than NAMEDATALEN; this saves having to
-			 * worry about where a multibyte character might have gotten
-			 * truncated.
-			 */
-			if (strncmp(rulename, "_RET", 4) != 0 ||
-				strncmp(rulename + 4, RelationGetRelationName(event_relation),
-						NAMEDATALEN - 4 - 4) != 0)
-				ereport(ERROR,
-						(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-						 errmsg("view rule for \"%s\" must be named \"%s\"",
-								RelationGetRelationName(event_relation),
-								ViewSelectRuleName)));
-			rulename = pstrdup(ViewSelectRuleName);
-		}
-
-		/*
-		 * Are we converting a relation to a view?
-		 *
-		 * If so, check that the relation is empty because the storage for the
-		 * relation is going to be deleted.  Also insist that the rel not have
-		 * any triggers, indexes, or child tables.	(Note: these tests are too
-		 * strict, because they will reject relations that once had such but
-		 * don't anymore.  But we don't really care, because this whole
-		 * business of converting relations to views is just a kluge to allow
-		 * dump/reload of views that participate in circular dependencies.)
-		 */
-		if (event_relation->rd_rel->relkind != RELKIND_VIEW)
-		{
-			HeapScanDesc scanDesc;
-
-			scanDesc = heap_beginscan(event_relation, SnapshotNow, 0, NULL);
-			if (heap_getnext(scanDesc, ForwardScanDirection) != NULL)
-				ereport(ERROR,
-						(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-						 errmsg("could not convert table \"%s\" to a view because it is not empty",
-								RelationGetRelationName(event_relation))));
-			heap_endscan(scanDesc);
-
-			if (event_relation->rd_rel->relhastriggers)
-				ereport(ERROR,
-						(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-						 errmsg("could not convert table \"%s\" to a view because it has triggers",
-								RelationGetRelationName(event_relation)),
-						 errhint("In particular, the table cannot be involved in any foreign key relationships.")));
-
-			if (event_relation->rd_rel->relhasindex)
-				ereport(ERROR,
-						(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-						 errmsg("could not convert table \"%s\" to a view because it has indexes",
-								RelationGetRelationName(event_relation))));
-
-			if (event_relation->rd_rel->relhassubclass)
-				ereport(ERROR,
-						(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-						 errmsg("could not convert table \"%s\" to a view because it has child tables",
-								RelationGetRelationName(event_relation))));
-
-			RelisBecomingView = true;
-		}
-	}
-	else
-	{
-		/*
-		 * For non-SELECT rules, a RETURNING list can appear in at most one of
-		 * the actions ... and there can't be any RETURNING list at all in a
-		 * conditional or non-INSTEAD rule.  (Actually, there can be at most
-		 * one RETURNING list across all rules on the same event, but it seems
-		 * best to enforce that at rule expansion time.)  If there is a
-		 * RETURNING list, it must match the event relation.
-		 */
-		bool		haveReturning = false;
-
-		foreach(l, action)
-		{
-			query = (Query *) lfirst(l);
-
-			if (!query->returningList)
-				continue;
-			if (haveReturning)
-				ereport(ERROR,
-						(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-				  errmsg("cannot have multiple RETURNING lists in a rule")));
-			haveReturning = true;
-			if (event_qual != NULL)
-				ereport(ERROR,
-						(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-						 errmsg("RETURNING lists are not supported in conditional rules")));
-			if (!is_instead)
-				ereport(ERROR,
-						(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-						 errmsg("RETURNING lists are not supported in non-INSTEAD rules")));
-			checkRuleResultList(query->returningList,
-								RelationGetDescr(event_relation),
-								false);
-		}
-	}
-
-	/*
-	 * This rule is allowed - prepare to install it.
-	 */
-	event_attno = -1;
-
-	/* discard rule if it's null action and not INSTEAD; it's a no-op */
-	if (action != NIL || is_instead)
-	{
-		ruleId = InsertRule(rulename,
-							event_type,
-							event_relid,
-							event_attno,
-							is_instead,
-							event_qual,
-							action,
-							replace);
-
-		/*
-		 * Set pg_class 'relhasrules' field TRUE for event relation.
-		 *
-		 * Important side effect: an SI notice is broadcast to force all
-		 * backends (including me!) to update relcache entries with the new
-		 * rule.
-		 */
-		SetRelationRuleStatus(event_relid, true);
-	}
-
-	/* ---------------------------------------------------------------------
-	 * If the relation is becoming a view:
-	 * - delete the associated storage files
-	 * - get rid of any system attributes in pg_attribute; a view shouldn't
-	 *   have any of those
-	 * - remove the toast table; there is no need for it anymore, and its
-	 *   presence would make vacuum slightly more complicated
-	 * - set relkind to RELKIND_VIEW, and adjust other pg_class fields
-	 *   to be appropriate for a view
-	 *
-	 * NB: we had better have AccessExclusiveLock to do this ...
-	 * ---------------------------------------------------------------------
-	 */
-	if (RelisBecomingView)
-	{
-		Relation	relationRelation;
-		Oid			toastrelid;
-		HeapTuple	classTup;
-		Form_pg_class classForm;
-
-		relationRelation = heap_open(RelationRelationId, RowExclusiveLock);
-		toastrelid = event_relation->rd_rel->reltoastrelid;
-
-		/* drop storage while table still looks like a table  */
-		RelationDropStorage(event_relation);
-		DeleteSystemAttributeTuples(event_relid);
-
-		/*
-		 * Drop the toast table if any.  (This won't take care of updating
-		 * the toast fields in the relation's own pg_class entry; we handle
-		 * that below.)
-		 */
-		if (OidIsValid(toastrelid))
-		{
-			ObjectAddress toastobject;
-
-			/*
-			 * Delete the dependency of the toast relation on the main
-			 * relation so we can drop the former without dropping the latter.
-			 */
-			deleteDependencyRecordsFor(RelationRelationId, toastrelid,
-									   false);
-
-			/* Make deletion of dependency record visible */
-			CommandCounterIncrement();
-
-			/* Now drop toast table, including its index */
-			toastobject.classId = RelationRelationId;
-			toastobject.objectId = toastrelid;
-			toastobject.objectSubId = 0;
-			performDeletion(&toastobject, DROP_RESTRICT,
-							PERFORM_DELETION_INTERNAL);
-		}
-
-		/*
-		 * SetRelationRuleStatus may have updated the pg_class row, so we must
-		 * advance the command counter before trying to update it again.
-		 */
-		CommandCounterIncrement();
-
-		/*
-		 * Fix pg_class entry to look like a normal view's, including setting
-		 * the correct relkind and removal of reltoastrelid/reltoastidxid of
-		 * the toast table we potentially removed above.
-		 */
-		classTup = SearchSysCacheCopy1(RELOID, ObjectIdGetDatum(event_relid));
-		if (!HeapTupleIsValid(classTup))
-			elog(ERROR, "cache lookup failed for relation %u", event_relid);
-		classForm = (Form_pg_class) GETSTRUCT(classTup);
-
-		classForm->reltablespace = InvalidOid;
-		classForm->relpages = 0;
-		classForm->reltuples = 0;
-		classForm->relallvisible = 0;
-		classForm->reltoastrelid = InvalidOid;
-		classForm->reltoastidxid = InvalidOid;
-		classForm->relhasindex = false;
-		classForm->relkind = RELKIND_VIEW;
-		classForm->relhasoids = false;
-		classForm->relhaspkey = false;
-		classForm->relfrozenxid = InvalidTransactionId;
-		classForm->relminmxid = InvalidMultiXactId;
-
-		simple_heap_update(relationRelation, &classTup->t_self, classTup);
-		CatalogUpdateIndexes(relationRelation, classTup);
-
-		heap_freetuple(classTup);
-		heap_close(relationRelation, RowExclusiveLock);
-	}
-
-	/* Close rel, but keep lock till commit... */
-	heap_close(event_relation, NoLock);
-
-	return ruleId;
-}
-
-/*
- * checkRuleResultList
- *		Verify that targetList produces output compatible with a tupledesc
- *
- * The targetList might be either a SELECT targetlist, or a RETURNING list;
- * isSelect tells which.  (This is mostly used for choosing error messages,
- * but also we don't enforce column name matching for RETURNING.)
- */
-static void
-checkRuleResultList(List *targetList, TupleDesc resultDesc, bool isSelect)
-{
-	ListCell   *tllist;
-	int			i;
-
-	i = 0;
-	foreach(tllist, targetList)
-	{
-		TargetEntry *tle = (TargetEntry *) lfirst(tllist);
-		int32		tletypmod;
-		Form_pg_attribute attr;
-		char	   *attname;
-
-		/* resjunk entries may be ignored */
-		if (tle->resjunk)
-			continue;
-		i++;
-		if (i > resultDesc->natts)
-			ereport(ERROR,
-					(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-					 isSelect ?
-				   errmsg("SELECT rule's target list has too many entries") :
-					 errmsg("RETURNING list has too many entries")));
-
-		attr = resultDesc->attrs[i - 1];
-		attname = NameStr(attr->attname);
-
-		/*
-		 * Disallow dropped columns in the relation.  This won't happen in the
-		 * cases we actually care about (namely creating a view via CREATE
-		 * TABLE then CREATE RULE, or adding a RETURNING rule to a view).
-		 * Trying to cope with it is much more trouble than it's worth,
-		 * because we'd have to modify the rule to insert dummy NULLs at the
-		 * right positions.
-		 */
-		if (attr->attisdropped)
-			ereport(ERROR,
-					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("cannot convert relation containing dropped columns to view")));
-
-		if (isSelect && strcmp(tle->resname, attname) != 0)
-			ereport(ERROR,
-					(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-					 errmsg("SELECT rule's target entry %d has different column name from \"%s\"", i, attname)));
-
-		if (attr->atttypid != exprType((Node *) tle->expr))
-			ereport(ERROR,
-					(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-					 isSelect ?
-					 errmsg("SELECT rule's target entry %d has different type from column \"%s\"",
-							i, attname) :
-					 errmsg("RETURNING list's entry %d has different type from column \"%s\"",
-							i, attname)));
-
-		/*
-		 * Allow typmods to be different only if one of them is -1, ie,
-		 * "unspecified".  This is necessary for cases like "numeric", where
-		 * the table will have a filled-in default length but the select
-		 * rule's expression will probably have typmod = -1.
-		 */
-		tletypmod = exprTypmod((Node *) tle->expr);
-		if (attr->atttypmod != tletypmod &&
-			attr->atttypmod != -1 && tletypmod != -1)
-			ereport(ERROR,
-					(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-					 isSelect ?
-					 errmsg("SELECT rule's target entry %d has different size from column \"%s\"",
-							i, attname) :
-					 errmsg("RETURNING list's entry %d has different size from column \"%s\"",
-							i, attname)));
-	}
-
-	if (i != resultDesc->natts)
-		ereport(ERROR,
-				(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-				 isSelect ?
-				 errmsg("SELECT rule's target list has too few entries") :
-				 errmsg("RETURNING list has too few entries")));
-}
-
-/*
- * setRuleCheckAsUser
- *		Recursively scan a query or expression tree and set the checkAsUser
- *		field to the given userid in all rtable entries.
- *
- * Note: for a view (ON SELECT rule), the checkAsUser field of the OLD
- * RTE entry will be overridden when the view rule is expanded, and the
- * checkAsUser field of the NEW entry is irrelevant because that entry's
- * requiredPerms bits will always be zero.	However, for other types of rules
- * it's important to set these fields to match the rule owner.  So we just set
- * them always.
- */
-void
-setRuleCheckAsUser(Node *node, Oid userid)
-{
-	(void) setRuleCheckAsUser_walker(node, &userid);
-}
-
-static bool
-setRuleCheckAsUser_walker(Node *node, Oid *context)
-{
-	if (node == NULL)
-		return false;
-	if (IsA(node, Query))
-	{
-		setRuleCheckAsUser_Query((Query *) node, *context);
-		return false;
-	}
-	return expression_tree_walker(node, setRuleCheckAsUser_walker,
-								  (void *) context);
-}
-
-static void
-setRuleCheckAsUser_Query(Query *qry, Oid userid)
-{
-	ListCell   *l;
-
-	/* Set all the RTEs in this query node */
-	foreach(l, qry->rtable)
-	{
-		RangeTblEntry *rte = (RangeTblEntry *) lfirst(l);
-
-		if (rte->rtekind == RTE_SUBQUERY)
-		{
-			/* Recurse into subquery in FROM */
-			setRuleCheckAsUser_Query(rte->subquery, userid);
-		}
-		else
-			rte->checkAsUser = userid;
-	}
-
-	/* Recurse into subquery-in-WITH */
-	foreach(l, qry->cteList)
-	{
-		CommonTableExpr *cte = (CommonTableExpr *) lfirst(l);
-
-		setRuleCheckAsUser_Query((Query *) cte->ctequery, userid);
-	}
-
-	/* If there are sublinks, search for them and process their RTEs */
-	if (qry->hasSubLinks)
-		query_tree_walker(qry, setRuleCheckAsUser_walker, (void *) &userid,
-						  QTW_IGNORE_RC_SUBQUERIES);
-}
-
-
-/*
- * Change the firing semantics of an existing rule.
- */
-void
-EnableDisableRule(Relation rel, const char *rulename,
-				  char fires_when)
-{
-	Relation	pg_rewrite_desc;
-	Oid			owningRel = RelationGetRelid(rel);
-	Oid			eventRelationOid;
-	HeapTuple	ruletup;
-	bool		changed = false;
-
-	/*
-	 * Find the rule tuple to change.
-	 */
-	pg_rewrite_desc = heap_open(RewriteRelationId, RowExclusiveLock);
-	ruletup = SearchSysCacheCopy2(RULERELNAME,
-								  ObjectIdGetDatum(owningRel),
-								  PointerGetDatum(rulename));
-	if (!HeapTupleIsValid(ruletup))
-		ereport(ERROR,
-				(errcode(ERRCODE_UNDEFINED_OBJECT),
-				 errmsg("rule \"%s\" for relation \"%s\" does not exist",
-						rulename, get_rel_name(owningRel))));
-
-	/*
-	 * Verify that the user has appropriate permissions.
-	 */
-	eventRelationOid = ((Form_pg_rewrite) GETSTRUCT(ruletup))->ev_class;
-	Assert(eventRelationOid == owningRel);
-	if (!pg_class_ownercheck(eventRelationOid, GetUserId()))
-		aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_CLASS,
-					   get_rel_name(eventRelationOid));
-
-	/*
-	 * Change ev_enabled if it is different from the desired new state.
-	 */
-	if (DatumGetChar(((Form_pg_rewrite) GETSTRUCT(ruletup))->ev_enabled) !=
-		fires_when)
-	{
-		((Form_pg_rewrite) GETSTRUCT(ruletup))->ev_enabled =
-			CharGetDatum(fires_when);
-		simple_heap_update(pg_rewrite_desc, &ruletup->t_self, ruletup);
-
-		/* keep system catalog indexes current */
-		CatalogUpdateIndexes(pg_rewrite_desc, ruletup);
-
-		changed = true;
-	}
-
-	heap_freetuple(ruletup);
-	heap_close(pg_rewrite_desc, RowExclusiveLock);
-
-	/*
-	 * If we changed anything, broadcast a SI inval message to force each
-	 * backend (including our own!) to rebuild relation's relcache entry.
-	 * Otherwise they will fail to apply the change promptly.
-	 */
-	if (changed)
-		CacheInvalidateRelcache(rel);
-}
-
-
-/*
- * Perform permissions and integrity checks before acquiring a relation lock.
- */
-static void
-RangeVarCallbackForRenameRule(const RangeVar *rv, Oid relid, Oid oldrelid,
-							  void *arg)
-{
-	HeapTuple	tuple;
-	Form_pg_class form;
-
-	tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(relid));
-	if (!HeapTupleIsValid(tuple))
-		return;					/* concurrently dropped */
-	form = (Form_pg_class) GETSTRUCT(tuple);
-
-	/* only tables and views can have rules */
-	if (form->relkind != RELKIND_RELATION && form->relkind != RELKIND_VIEW)
-		ereport(ERROR,
-				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
-				 errmsg("\"%s\" is not a table or view", rv->relname)));
-
-	if (!allowSystemTableMods && IsSystemClass(form))
-		ereport(ERROR,
-				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
-				 errmsg("permission denied: \"%s\" is a system catalog",
-						rv->relname)));
-
-	/* you must own the table to rename one of its rules */
-	if (!pg_class_ownercheck(relid, GetUserId()))
-		aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_CLASS, rv->relname);
-
-	ReleaseSysCache(tuple);
-}
-
-/*
- * Rename an existing rewrite rule.
- */
-Oid
-RenameRewriteRule(RangeVar *relation, const char *oldName,
-				  const char *newName)
-{
-	Oid			relid;
-	Relation	targetrel;
-	Relation	pg_rewrite_desc;
-	HeapTuple	ruletup;
-	Form_pg_rewrite ruleform;
-	Oid			ruleOid;
-
-	/*
-	 * Look up name, check permissions, and acquire lock (which we will NOT
-	 * release until end of transaction).
-	 */
-	relid = RangeVarGetRelidExtended(relation, AccessExclusiveLock,
-									 false, false,
-									 RangeVarCallbackForRenameRule,
-									 NULL);
-
-	/* Have lock already, so just need to build relcache entry. */
-	targetrel = relation_open(relid, NoLock);
-
-	/* Prepare to modify pg_rewrite */
-	pg_rewrite_desc = heap_open(RewriteRelationId, RowExclusiveLock);
-
-	/* Fetch the rule's entry (it had better exist) */
-	ruletup = SearchSysCacheCopy2(RULERELNAME,
-								  ObjectIdGetDatum(relid),
-								  PointerGetDatum(oldName));
-	if (!HeapTupleIsValid(ruletup))
-		ereport(ERROR,
-				(errcode(ERRCODE_UNDEFINED_OBJECT),
-				 errmsg("rule \"%s\" for relation \"%s\" does not exist",
-						oldName, RelationGetRelationName(targetrel))));
-	ruleform = (Form_pg_rewrite) GETSTRUCT(ruletup);
-	ruleOid = HeapTupleGetOid(ruletup);
-
-	/* rule with the new name should not already exist */
-	if (IsDefinedRewriteRule(relid, newName))
-		ereport(ERROR,
-				(errcode(ERRCODE_DUPLICATE_OBJECT),
-				 errmsg("rule \"%s\" for relation \"%s\" already exists",
-						newName, RelationGetRelationName(targetrel))));
-
-	/*
-	 * We disallow renaming ON SELECT rules, because they should always be
-	 * named "_RETURN".
-	 */
-	if (ruleform->ev_type == CMD_SELECT + '0')
-		ereport(ERROR,
-				(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-				 errmsg("renaming an ON SELECT rule is not allowed")));
-
-	/* OK, do the update */
-	namestrcpy(&(ruleform->rulename), newName);
-
-	simple_heap_update(pg_rewrite_desc, &ruletup->t_self, ruletup);
-
-	/* keep system catalog indexes current */
-	CatalogUpdateIndexes(pg_rewrite_desc, ruletup);
-
-	heap_freetuple(ruletup);
-	heap_close(pg_rewrite_desc, RowExclusiveLock);
-
-	/*
-	 * Invalidate relation's relcache entry so that other backends (and this
-	 * one too!) are sent SI message to make them rebuild relcache entries.
-	 * (Ideally this should happen automatically...)
-	 */
-	CacheInvalidateRelcache(targetrel);
-
-	/*
-	 * Close rel, but keep exclusive lock!
-	 */
-	relation_close(targetrel, NoLock);
-
-	return ruleOid;
-}