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Make DROP IF EXISTS more consistently not fail

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Some cases were still reporting errors and aborting, instead of a NOTICE
that the object was being skipped.  This makes it more difficult to
cleanly handle pg_dump --clean, so change that to instead skip missing
objects properly.

Per bug #7873 reported by Dave Rolsky; apparently this affects a large
number of users.

Authors: Pavel Stehule and Dean Rasheed.  Some tweaks by Álvaro Herrera
This commit is contained in:
Alvaro Herrera 2014-01-23 14:40:29 -03:00
parent 9f80f4835a
commit b152c6cd0d
17 changed files with 523 additions and 145 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
src/backend/catalog/namespace.c
View File

@ -906,10 +906,15 @@ TypeIsVisible(Oid typid)
* with oid = 0 that represents a set of such conflicting candidates.
* The caller might end up discarding such an entry anyway, but if it selects
* such an entry it should react as though the call were ambiguous.
*
* If missing_ok is true, an empty list (NULL) is returned if the name was
* schema- qualified with a schema that does not exist. Likewise if no
* candidate is found for other reasons.
*/
FuncCandidateList
FuncnameGetCandidates(List *names, int nargs, List *argnames,
bool expand_variadic, bool expand_defaults)
bool expand_variadic, bool expand_defaults,
bool missing_ok)
{
FuncCandidateList resultList = NULL;
bool any_special = false;
@ -928,7 +933,9 @@ FuncnameGetCandidates(List *names, int nargs, List *argnames,
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, false);
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (!OidIsValid(namespaceId))
return NULL;
}
else
{
@ -1414,7 +1421,7 @@ FunctionIsVisible(Oid funcid)
visible = false;
clist = FuncnameGetCandidates(list_make1(makeString(proname)),
nargs, NIL, false, false);
nargs, NIL, false, false, false);
for (; clist; clist = clist->next)
{
@ -1443,7 +1450,8 @@ FunctionIsVisible(Oid funcid)
* a postfix op.
*
* If the operator name is not schema-qualified, it is sought in the current
* namespace search path.
* namespace search path. If the name is schema-qualified and the given
* schema does not exist, InvalidOid is returned.
*/
Oid
OpernameGetOprid(List *names, Oid oprleft, Oid oprright)
@ -1460,9 +1468,12 @@ OpernameGetOprid(List *names, Oid oprleft, Oid oprright)
{
/* search only in exact schema given */
Oid namespaceId;
namespaceId = LookupExplicitNamespace(schemaname, true);
if (OidIsValid(namespaceId))
{
HeapTuple opertup;
namespaceId = LookupExplicitNamespace(schemaname, false);
opertup = SearchSysCache4(OPERNAMENSP,
CStringGetDatum(opername),
ObjectIdGetDatum(oprleft),
@ -1475,6 +1486,8 @@ OpernameGetOprid(List *names, Oid oprleft, Oid oprright)
ReleaseSysCache(opertup);
return result;
}
}
return InvalidOid;
}
@ -1729,7 +1742,7 @@ OperatorIsVisible(Oid oprid)
* If it is in the path, it might still not be visible; it could be
* hidden by another operator of the same name and arguments earlier
* in the path. So we must do a slow check to see if this is the same
* operator that would be found by OpernameGetOprId.
* operator that would be found by OpernameGetOprid.
*/
char *oprname = NameStr(oprform->oprname);

44
src/backend/catalog/objectaddress.c
View File

@ -450,7 +450,7 @@ static void getRelationIdentity(StringInfo buffer, Oid relid);
* sub-object is looked up, the parent object will be locked instead.
*
* If the object is a relation or a child object of a relation (e.g. an
* attribute or contraint), the relation is also opened and *relp receives
* attribute or constraint), the relation is also opened and *relp receives
* the open relcache entry pointer; otherwise, *relp is set to NULL. This
* is a bit grotty but it makes life simpler, since the caller will
* typically need the relcache entry too. Caller must close the relcache
@ -458,9 +458,20 @@ static void getRelationIdentity(StringInfo buffer, Oid relid);
* if the target object is the relation itself or an attribute, but for other
* child objects, only AccessShareLock is acquired on the relation.
*
* If the object is not found, an error is thrown, unless missing_ok is
* true. In this case, no lock is acquired, relp is set to NULL, and the
* returned address has objectId set to InvalidOid.
*
* We don't currently provide a function to release the locks acquired here;
* typically, the lock must be held until commit to guard against a concurrent
* drop operation.
*
* Note: If the object is not found, we don't give any indication of the
* reason. (It might have been a missing schema if the name was qualified, or
* an inexistant type name in case of a cast, function or operator; etc).
* Currently there is only one caller that might be interested in such info, so
* we don't spend much effort here. If more callers start to care, it might be
* better to add some support for that in this function.
*/
ObjectAddress
get_object_address(ObjectType objtype, List *objname, List *objargs,
@ -580,9 +591,11 @@ get_object_address(ObjectType objtype, List *objname, List *objargs,
{
TypeName *sourcetype = (TypeName *) linitial(objname);
TypeName *targettype = (TypeName *) linitial(objargs);
Oid sourcetypeid = typenameTypeId(NULL, sourcetype);
Oid targettypeid = typenameTypeId(NULL, targettype);
Oid sourcetypeid;
Oid targettypeid;
sourcetypeid = LookupTypeNameOid(NULL, sourcetype, missing_ok);
targettypeid = LookupTypeNameOid(NULL, targettype, missing_ok);
address.classId = CastRelationId;
address.objectId =
get_cast_oid(sourcetypeid, targettypeid, missing_ok);
@ -942,26 +955,31 @@ get_object_address_relobject(ObjectType objtype, List *objname,
/* Extract relation name and open relation. */
relname = list_truncate(list_copy(objname), nnames - 1);
relation = heap_openrv(makeRangeVarFromNameList(relname),
AccessShareLock);
reloid = RelationGetRelid(relation);
relation = heap_openrv_extended(makeRangeVarFromNameList(relname),
AccessShareLock,
missing_ok);
reloid = relation ? RelationGetRelid(relation) : InvalidOid;
switch (objtype)
{
case OBJECT_RULE:
address.classId = RewriteRelationId;
address.objectId = get_rewrite_oid(reloid, depname, missing_ok);
address.objectId = relation ?
get_rewrite_oid(reloid, depname, missing_ok) : InvalidOid;
address.objectSubId = 0;
break;
case OBJECT_TRIGGER:
address.classId = TriggerRelationId;
address.objectId = get_trigger_oid(reloid, depname, missing_ok);
address.objectId = relation ?
get_trigger_oid(reloid, depname, missing_ok) : InvalidOid;
address.objectSubId = 0;
break;
case OBJECT_CONSTRAINT:
address.classId = ConstraintRelationId;
address.objectId =
get_relation_constraint_oid(reloid, depname, missing_ok);
address.objectId = relation ?
get_relation_constraint_oid(reloid, depname, missing_ok) :
InvalidOid;
address.objectSubId = 0;
break;
default:
@ -975,7 +993,9 @@ get_object_address_relobject(ObjectType objtype, List *objname,
/* Avoid relcache leak when object not found. */
if (!OidIsValid(address.objectId))
{
if (relation != NULL)
heap_close(relation, AccessShareLock);
relation = NULL; /* department of accident prevention */
return address;
}
@ -1008,6 +1028,7 @@ get_object_address_attribute(ObjectType objtype, List *objname,
errmsg("column name must be qualified")));
attname = strVal(lfirst(list_tail(objname)));
relname = list_truncate(list_copy(objname), list_length(objname) - 1);
/* XXX no missing_ok support here */
relation = relation_openrv(makeRangeVarFromNameList(relname), lockmode);
reloid = RelationGetRelid(relation);
@ -1053,7 +1074,7 @@ get_object_address_type(ObjectType objtype,
address.objectId = InvalidOid;
address.objectSubId = 0;
tup = LookupTypeName(NULL, typename, NULL);
tup = LookupTypeName(NULL, typename, NULL, missing_ok);
if (!HeapTupleIsValid(tup))
{
if (!missing_ok)
@ -1090,6 +1111,7 @@ get_object_address_opcf(ObjectType objtype,
ObjectAddress address;
Assert(list_length(objargs) == 1);
/* XXX no missing_ok support here */
amoid = get_am_oid(strVal(linitial(objargs)), false);
switch (objtype)

190
src/backend/commands/dropcmds.c
View File

@ -12,7 +12,6 @@
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/heapam.h"
@ -29,8 +28,16 @@
#include "utils/builtins.h"
#include "utils/syscache.h"
static void does_not_exist_skipping(ObjectType objtype,
List *objname, List *objargs);
static bool owningrel_does_not_exist_skipping(List *objname,
const char **msg, char **name);
static bool schema_does_not_exist_skipping(List *objname,
const char **msg, char **name);
static bool type_in_list_does_not_exist_skipping(List *typenames,
const char **msg, char **name);
/*
* Drop one or more objects.
@ -73,9 +80,14 @@ RemoveObjects(DropStmt *stmt)
AccessExclusiveLock,
stmt->missing_ok);
/* Issue NOTICE if supplied object was not found. */
/*
* Issue NOTICE if supplied object was not found. Note this is only
* relevant in the missing_ok case, because otherwise
* get_object_address would have thrown an error.
*/
if (!OidIsValid(address.objectId))
{
Assert(stmt->missing_ok);
does_not_exist_skipping(stmt->removeType, objname, objargs);
continue;
}
@ -125,9 +137,121 @@ RemoveObjects(DropStmt *stmt)
}
/*
* owningrel_does_not_exist_skipping
* Subroutine for RemoveObjects
*
* After determining that a specification for a rule or trigger returns that
* the specified object does not exist, test whether its owning relation, and
* its schema, exist or not; if they do, return false --- the trigger or rule
* itself is missing instead. If the owning relation or its schema do not
* exist, fill the error message format string and name, and return true.
*/
static bool
owningrel_does_not_exist_skipping(List *objname, const char **msg, char **name)
{
List *parent_objname;
RangeVar *parent_rel;
parent_objname = list_truncate(list_copy(objname),
list_length(objname) - 1);
if (schema_does_not_exist_skipping(parent_objname, msg, name))
return true;
parent_rel = makeRangeVarFromNameList(parent_objname);
if (!OidIsValid(RangeVarGetRelid(parent_rel, NoLock, true)))
{
*msg = gettext_noop("relation \"%s\" does not exist, skipping");
*name = NameListToString(parent_objname);
return true;
}
return false;
}
/*
* schema_does_not_exist_skipping
* Subroutine for RemoveObjects
*
* After determining that a specification for a schema-qualifiable object
* refers to an object that does not exist, test whether the specified schema
* exists or not. If no schema was specified, or if the schema does exist,
* return false -- the object itself is missing instead. If the specified
* schema does not exist, fill the error message format string and the
* specified schema name, and return true.
*/
static bool
schema_does_not_exist_skipping(List *objname, const char **msg, char **name)
{
RangeVar *rel;
rel = makeRangeVarFromNameList(objname);
if (rel->schemaname != NULL &&
!OidIsValid(LookupNamespaceNoError(rel->schemaname)))
{
*msg = gettext_noop("schema \"%s\" does not exist, skipping");
*name = rel->schemaname;
return true;
}
return false;
}
/*
* type_in_list_does_not_exist_skipping
* Subroutine for RemoveObjects
*
* After determining that a specification for a function, cast, aggregate or
* operator returns that the specified object does not exist, test whether the
* involved datatypes, and their schemas, exist or not; if they do, return
* false --- the original object itself is missing instead. If the datatypes
* or schemas do not exist, fill the error message format string and the
* missing name, and return true.
*
* First parameter is a list of TypeNames.
*/
static bool
type_in_list_does_not_exist_skipping(List *typenames, const char **msg,
char **name)
{
ListCell *l;
foreach(l, typenames)
{
TypeName *typeName = (TypeName *) lfirst(l);
if (typeName != NULL)
{
Assert(IsA(typeName, TypeName));
if (!OidIsValid(LookupTypeNameOid(NULL, typeName, true)))
{
/* type doesn't exist, try to find why */
if (schema_does_not_exist_skipping(typeName->names, msg, name))
return true;
*msg = gettext_noop("type \"%s\" does not exist, skipping");
*name = TypeNameToString(typeName);
return true;
}
}
}
return false;
}
/*
* does_not_exist_skipping
* Subroutine for RemoveObjects
*
* Generate a NOTICE stating that the named object was not found, and is
* being skipped. This is only relevant when "IF EXISTS" is used; otherwise,
* get_object_address() will throw an ERROR.
* get_object_address() in RemoveObjects would have thrown an ERROR.
*/
static void
does_not_exist_skipping(ObjectType objtype, List *objname, List *objargs)
@ -140,81 +264,125 @@ does_not_exist_skipping(ObjectType objtype, List *objname, List *objargs)
{
case OBJECT_TYPE:
case OBJECT_DOMAIN:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("type \"%s\" does not exist, skipping");
name = TypeNameToString(makeTypeNameFromNameList(objname));
}
break;
case OBJECT_COLLATION:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("collation \"%s\" does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_CONVERSION:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("conversion \"%s\" does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_SCHEMA:
msg = gettext_noop("schema \"%s\" does not exist, skipping");
name = NameListToString(objname);
break;
case OBJECT_TSPARSER:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("text search parser \"%s\" does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_TSDICTIONARY:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("text search dictionary \"%s\" does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_TSTEMPLATE:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("text search template \"%s\" does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_TSCONFIGURATION:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("text search configuration \"%s\" does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_EXTENSION:
msg = gettext_noop("extension \"%s\" does not exist, skipping");
name = NameListToString(objname);
break;
case OBJECT_FUNCTION:
if (!schema_does_not_exist_skipping(objname, &msg, &name) &&
!type_in_list_does_not_exist_skipping(objargs, &msg, &name))
{
msg = gettext_noop("function %s(%s) does not exist, skipping");
name = NameListToString(objname);
args = TypeNameListToString(objargs);
}
break;
case OBJECT_AGGREGATE:
if (!schema_does_not_exist_skipping(objname, &msg, &name) &&
!type_in_list_does_not_exist_skipping(objargs, &msg, &name))
{
msg = gettext_noop("aggregate %s(%s) does not exist, skipping");
name = NameListToString(objname);
args = TypeNameListToString(objargs);
}
break;
case OBJECT_OPERATOR:
if (!schema_does_not_exist_skipping(objname, &msg, &name) &&
!type_in_list_does_not_exist_skipping(objargs, &msg, &name))
{
msg = gettext_noop("operator %s does not exist, skipping");
name = NameListToString(objname);
}
break;
case OBJECT_LANGUAGE:
msg = gettext_noop("language \"%s\" does not exist, skipping");
name = NameListToString(objname);
break;
case OBJECT_CAST:
{
if (!type_in_list_does_not_exist_skipping(objname, &msg, &name) &&
!type_in_list_does_not_exist_skipping(objargs, &msg, &name))
{
/* XXX quote or no quote? */
msg = gettext_noop("cast from type %s to type %s does not exist, skipping");
name = format_type_be(typenameTypeId(NULL,
(TypeName *) linitial(objname)));
args = format_type_be(typenameTypeId(NULL,
(TypeName *) linitial(objargs)));
name = TypeNameToString((TypeName *) linitial(objname));
args = TypeNameToString((TypeName *) linitial(objargs));
}
}
break;
case OBJECT_TRIGGER:
msg = gettext_noop("trigger \"%s\" for table \"%s\" does not exist, skipping");
if (!owningrel_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("trigger \"%s\" for relation \"%s\" does not exist, skipping");
name = strVal(llast(objname));
args = NameListToString(list_truncate(list_copy(objname),
list_length(objname) - 1));
}
break;
case OBJECT_EVENT_TRIGGER:
msg = gettext_noop("event trigger \"%s\" does not exist, skipping");
name = NameListToString(objname);
break;
case OBJECT_RULE:
if (!owningrel_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("rule \"%s\" for relation \"%s\" does not exist, skipping");
name = strVal(llast(objname));
args = NameListToString(list_truncate(list_copy(objname),
list_length(objname) - 1));
}
break;
case OBJECT_FDW:
msg = gettext_noop("foreign-data wrapper \"%s\" does not exist, skipping");
@ -225,14 +393,20 @@ does_not_exist_skipping(ObjectType objtype, List *objname, List *objargs)
name = NameListToString(objname);
break;
case OBJECT_OPCLASS:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("operator class \"%s\" does not exist for access method \"%s\", skipping");
name = NameListToString(objname);
args = strVal(linitial(objargs));
}
break;
case OBJECT_OPFAMILY:
if (!schema_does_not_exist_skipping(objname, &msg, &name))
{
msg = gettext_noop("operator family \"%s\" does not exist for access method \"%s\", skipping");
name = NameListToString(objname);
args = strVal(linitial(objargs));
}
break;
default:
elog(ERROR, "unexpected object type (%d)", (int) objtype);

4
src/backend/commands/functioncmds.c
View File

@ -86,7 +86,7 @@ compute_return_type(TypeName *returnType, Oid languageOid,
Type typtup;
AclResult aclresult;
typtup = LookupTypeName(NULL, returnType, NULL);
typtup = LookupTypeName(NULL, returnType, NULL, false);
if (typtup)
{
@ -224,7 +224,7 @@ interpret_function_parameter_list(List *parameters,
Type typtup;
AclResult aclresult;
typtup = LookupTypeName(NULL, t, NULL);
typtup = LookupTypeName(NULL, t, NULL, false);
if (typtup)
{
if (!((Form_pg_type) GETSTRUCT(typtup))->typisdefined)

10
src/backend/commands/opclasscmds.c
View File

@ -103,7 +103,10 @@ OpFamilyCacheLookup(Oid amID, List *opfamilyname, bool missing_ok)
/* Look in specific schema only */
Oid namespaceId;
namespaceId = LookupExplicitNamespace(schemaname, false);
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (!OidIsValid(namespaceId))
htup = NULL;
else
htup = SearchSysCache3(OPFAMILYAMNAMENSP,
ObjectIdGetDatum(amID),
PointerGetDatum(opfname),
@ -179,7 +182,10 @@ OpClassCacheLookup(Oid amID, List *opclassname, bool missing_ok)
/* Look in specific schema only */
Oid namespaceId;
namespaceId = LookupExplicitNamespace(schemaname, false);
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (!OidIsValid(namespaceId))
htup = NULL;
else
htup = SearchSysCache3(CLAAMNAMENSP,
ObjectIdGetDatum(amID),
PointerGetDatum(opcname),

26
src/backend/commands/tablecmds.c
View File

@ -690,10 +690,28 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId)
* non-existent relation
*/
static void
DropErrorMsgNonExistent(const char *relname, char rightkind, bool missing_ok)
DropErrorMsgNonExistent(RangeVar *rel, char rightkind, bool missing_ok)
{
const struct dropmsgstrings *rentry;
if (rel->schemaname != NULL &&
!OidIsValid(LookupNamespaceNoError(rel->schemaname)))
{
if (!missing_ok)
{
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_SCHEMA),
errmsg("schema \"%s\" does not exist", rel->schemaname)));
}
else
{
ereport(NOTICE,
(errmsg("schema \"%s\" does not exist, skipping",
rel->schemaname)));
}
return;
}
for (rentry = dropmsgstringarray; rentry->kind != '\0'; rentry++)
{
if (rentry->kind == rightkind)
@ -702,11 +720,11 @@ DropErrorMsgNonExistent(const char *relname, char rightkind, bool missing_ok)
{
ereport(ERROR,
(errcode(rentry->nonexistent_code),
errmsg(rentry->nonexistent_msg, relname)));
errmsg(rentry->nonexistent_msg, rel->relname)));
}
else
{
ereport(NOTICE, (errmsg(rentry->skipping_msg, relname)));
ereport(NOTICE, (errmsg(rentry->skipping_msg, rel->relname)));
break;
}
}
@ -845,7 +863,7 @@ RemoveRelations(DropStmt *drop)
/* Not there? */
if (!OidIsValid(relOid))
{
DropErrorMsgNonExistent(rel->relname, relkind, drop->missing_ok);
DropErrorMsgNonExistent(rel, relkind, drop->missing_ok);
continue;
}

2
src/backend/commands/typecmds.c
View File

@ -3246,7 +3246,7 @@ AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
typename = makeTypeNameFromNameList(names);
/* Use LookupTypeName here so that shell types can be processed */
tup = LookupTypeName(NULL, typename, NULL);
tup = LookupTypeName(NULL, typename, NULL, false);
if (tup == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),

32
src/backend/parser/parse_func.c
View File

@ -1259,7 +1259,8 @@ func_get_detail(List *funcname,
/* Get list of possible candidates from namespace search */
raw_candidates = FuncnameGetCandidates(funcname, nargs, fargnames,
expand_variadic, expand_defaults);
expand_variadic, expand_defaults,
false);
/*
* Quickly check if there is an exact match to the input datatypes (there
@ -1714,7 +1715,7 @@ FuncNameAsType(List *funcname)
Oid result;
Type typtup;
typtup = LookupTypeName(NULL, makeTypeNameFromNameList(funcname), NULL);
typtup = LookupTypeName(NULL, makeTypeNameFromNameList(funcname), NULL, false);
if (typtup == NULL)
return InvalidOid;
@ -1873,7 +1874,7 @@ LookupFuncName(List *funcname, int nargs, const Oid *argtypes, bool noError)
{
FuncCandidateList clist;
clist = FuncnameGetCandidates(funcname, nargs, NIL, false, false);
clist = FuncnameGetCandidates(funcname, nargs, NIL, false, false, noError);
while (clist)
{
@ -1892,27 +1893,6 @@ LookupFuncName(List *funcname, int nargs, const Oid *argtypes, bool noError)
return InvalidOid;
}
/*
* LookupTypeNameOid
* Convenience routine to look up a type, silently accepting shell types
*/
static Oid
LookupTypeNameOid(const TypeName *typename)
{
Oid result;
Type typtup;
typtup = LookupTypeName(NULL, typename, NULL);
if (typtup == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("type \"%s\" does not exist",
TypeNameToString(typename))));
result = typeTypeId(typtup);
ReleaseSysCache(typtup);
return result;
}
/*
* LookupFuncNameTypeNames
* Like LookupFuncName, but the argument types are specified by a
@ -1940,7 +1920,7 @@ LookupFuncNameTypeNames(List *funcname, List *argtypes, bool noError)
{
TypeName *t = (TypeName *) lfirst(args_item);
argoids[i] = LookupTypeNameOid(t);
argoids[i] = LookupTypeNameOid(NULL, t, noError);
args_item = lnext(args_item);
}
@ -1980,7 +1960,7 @@ LookupAggNameTypeNames(List *aggname, List *argtypes, bool noError)
{
TypeName *t = (TypeName *) lfirst(lc);
argoids[i] = LookupTypeNameOid(t);
argoids[i] = LookupTypeNameOid(NULL, t, noError);
i++;
}

4
src/backend/parser/parse_oper.c
View File

@ -148,12 +148,12 @@ LookupOperNameTypeNames(ParseState *pstate, List *opername,
if (oprleft == NULL)
leftoid = InvalidOid;
else
leftoid = typenameTypeId(pstate, oprleft);
leftoid = LookupTypeNameOid(pstate, oprleft, noError);
if (oprright == NULL)
rightoid = InvalidOid;
else
rightoid = typenameTypeId(pstate, oprright);
rightoid = LookupTypeNameOid(pstate, oprright, noError);
return LookupOperName(pstate, opername, leftoid, rightoid,
noError, location);

56
src/backend/parser/parse_type.c
View File

@ -56,7 +56,7 @@ static int32 typenameTypeMod(ParseState *pstate, const TypeName *typeName,
*/
Type
LookupTypeName(ParseState *pstate, const TypeName *typeName,
int32 *typmod_p)
int32 *typmod_p, bool missing_ok)
{
Oid typoid;
HeapTuple tup;
@ -116,14 +116,21 @@ LookupTypeName(ParseState *pstate, const TypeName *typeName,
* concurrent DDL. But taking a lock would carry a performance
* penalty and would also require a permissions check.
*/
relid = RangeVarGetRelid(rel, NoLock, false);
relid = RangeVarGetRelid(rel, NoLock, missing_ok);
attnum = get_attnum(relid, field);
if (attnum == InvalidAttrNumber)
{
if (missing_ok)
typoid = InvalidOid;
else
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_COLUMN),
errmsg("column \"%s\" of relation \"%s\" does not exist",
field, rel->relname),
parser_errposition(pstate, typeName->location)));
}
else
{
typoid = get_atttype(relid, attnum);
/* this construct should never have an array indicator */
@ -135,6 +142,7 @@ LookupTypeName(ParseState *pstate, const TypeName *typeName,
TypeNameToString(typeName),
format_type_be(typoid))));
}
}
else
{
/* Normal reference to a type name */
@ -149,10 +157,13 @@ LookupTypeName(ParseState *pstate, const TypeName *typeName,
/* Look in specific schema only */
Oid namespaceId;
namespaceId = LookupExplicitNamespace(schemaname, false);
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (OidIsValid(namespaceId))
typoid = GetSysCacheOid2(TYPENAMENSP,
PointerGetDatum(typname),
ObjectIdGetDatum(namespaceId));
else
typoid = InvalidOid;
}
else
{
@ -184,6 +195,43 @@ LookupTypeName(ParseState *pstate, const TypeName *typeName,
return (Type) tup;
}
/*
* LookupTypeNameOid
* Given a TypeName object, lookup the pg_type syscache entry of the type.
* Returns InvalidOid if no such type can be found. If the type is found,
* return its Oid.
*
* NB: direct callers of this function need to be aware that the type OID
* returned may correspond to a shell type. Most code should go through
* typenameTypeId instead.
*
* pstate is only used for error location info, and may be NULL.
*/
Oid
LookupTypeNameOid(ParseState *pstate, const TypeName *typeName, bool missing_ok)
{
Oid typoid;
Type tup;
tup = LookupTypeName(pstate, typeName, NULL, missing_ok);
if (tup == NULL)
{
if (!missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("type \"%s\" does not exist",
TypeNameToString(typeName)),
parser_errposition(pstate, typeName->location)));
return InvalidOid;
}
typoid = HeapTupleGetOid(tup);
ReleaseSysCache(tup);
return typoid;
}
/*
* typenameType - given a TypeName, return a Type structure and typmod
*
@ -196,7 +244,7 @@ typenameType(ParseState *pstate, const TypeName *typeName, int32 *typmod_p)
{
Type tup;
tup = LookupTypeName(pstate, typeName, typmod_p);
tup = LookupTypeName(pstate, typeName, typmod_p, false);
if (tup == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),

6
src/backend/utils/adt/regproc.c
View File

@ -135,7 +135,7 @@ regprocin(PG_FUNCTION_ARGS)
* pg_proc entries in the current search path.
*/
names = stringToQualifiedNameList(pro_name_or_oid);
clist = FuncnameGetCandidates(names, -1, NIL, false, false);
clist = FuncnameGetCandidates(names, -1, NIL, false, false, false);
if (clist == NULL)
ereport(ERROR,
@ -192,7 +192,7 @@ regprocout(PG_FUNCTION_ARGS)
* qualify it.
*/
clist = FuncnameGetCandidates(list_make1(makeString(proname)),
-1, NIL, false, false);
-1, NIL, false, false, false);
if (clist != NULL && clist->next == NULL &&
clist->oid == proid)
nspname = NULL;
@ -279,7 +279,7 @@ regprocedurein(PG_FUNCTION_ARGS)
*/
parseNameAndArgTypes(pro_name_or_oid, false, &names, &nargs, argtypes);
clist = FuncnameGetCandidates(names, nargs, NIL, false, false);
clist = FuncnameGetCandidates(names, nargs, NIL, false, false, false);
for (; clist; clist = clist->next)
{

3
src/include/catalog/namespace.h
View File

@ -71,7 +71,8 @@ extern bool TypeIsVisible(Oid typid);
extern FuncCandidateList FuncnameGetCandidates(List *names,
int nargs, List *argnames,
bool expand_variadic,
bool expand_defaults);
bool expand_defaults,
bool missing_ok);
extern bool FunctionIsVisible(Oid funcid);
extern Oid OpernameGetOprid(List *names, Oid oprleft, Oid oprright);

4
src/include/parser/parse_type.h
View File

@ -20,7 +20,9 @@
typedef HeapTuple Type;
extern Type LookupTypeName(ParseState *pstate, const TypeName *typeName,
int32 *typmod_p);
int32 *typmod_p, bool missing_ok);
extern Oid LookupTypeNameOid(ParseState *pstate, const TypeName *typeName,
bool missing_ok);
extern Type typenameType(ParseState *pstate, const TypeName *typeName,
int32 *typmod_p);
extern Oid typenameTypeId(ParseState *pstate, const TypeName *typeName);

2
src/pl/plpgsql/src/pl_comp.c
View File

@ -1665,7 +1665,7 @@ plpgsql_parse_wordtype(char *ident)
* Word wasn't found in the namespace stack. Try to find a data type with
* that name, but ignore shell types and complex types.
*/
typeTup = LookupTypeName(NULL, makeTypeName(ident), NULL);
typeTup = LookupTypeName(NULL, makeTypeName(ident), NULL, false);
if (typeTup)
{
Form_pg_type typeStruct = (Form_pg_type) GETSTRUCT(typeTup);

79
src/test/regress/expected/drop_if_exists.out
View File

@ -169,11 +169,15 @@ NOTICE: cast from type text to type text does not exist, skipping
DROP TRIGGER test_trigger_exists ON test_exists;
ERROR: trigger "test_trigger_exists" for table "test_exists" does not exist
DROP TRIGGER IF EXISTS test_trigger_exists ON test_exists;
NOTICE: trigger "test_trigger_exists" for table "test_exists" does not exist, skipping
NOTICE: trigger "test_trigger_exists" for relation "test_exists" does not exist, skipping
DROP TRIGGER test_trigger_exists ON no_such_table;
ERROR: relation "no_such_table" does not exist
DROP TRIGGER IF EXISTS test_trigger_exists ON no_such_table;
ERROR: relation "no_such_table" does not exist
NOTICE: relation "no_such_table" does not exist, skipping
DROP TRIGGER test_trigger_exists ON no_such_schema.no_such_table;
ERROR: schema "no_such_schema" does not exist
DROP TRIGGER IF EXISTS test_trigger_exists ON no_such_schema.no_such_table;
NOTICE: schema "no_such_schema" does not exist, skipping
CREATE TRIGGER test_trigger_exists
BEFORE UPDATE ON test_exists
FOR EACH ROW EXECUTE PROCEDURE suppress_redundant_updates_trigger();
@ -186,7 +190,11 @@ NOTICE: rule "test_rule_exists" for relation "test_exists" does not exist, skip
DROP RULE test_rule_exists ON no_such_table;
ERROR: relation "no_such_table" does not exist
DROP RULE IF EXISTS test_rule_exists ON no_such_table;
ERROR: relation "no_such_table" does not exist
NOTICE: relation "no_such_table" does not exist, skipping
DROP RULE test_rule_exists ON no_such_schema.no_such_table;
ERROR: schema "no_such_schema" does not exist
DROP RULE IF EXISTS test_rule_exists ON no_such_schema.no_such_table;
NOTICE: schema "no_such_schema" does not exist, skipping
CREATE RULE test_rule_exists AS ON INSERT TO test_exists
DO INSTEAD
INSERT INTO test_exists VALUES (NEW.a, NEW.b || NEW.a::text);
@ -223,3 +231,68 @@ ERROR: access method "no_such_am" does not exist
DROP TABLE IF EXISTS test_exists;
DROP TABLE test_exists;
ERROR: table "test_exists" does not exist
-- be tolerant with missing schemas, types, etc
DROP AGGREGATE IF EXISTS no_such_schema.foo(int);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP AGGREGATE IF EXISTS foo(no_such_type);
NOTICE: type "no_such_type" does not exist, skipping
DROP AGGREGATE IF EXISTS foo(no_such_schema.no_such_type);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP CAST IF EXISTS (INTEGER AS no_such_type2);
NOTICE: type "no_such_type2" does not exist, skipping
DROP CAST IF EXISTS (no_such_type1 AS INTEGER);
NOTICE: type "no_such_type1" does not exist, skipping
DROP CAST IF EXISTS (INTEGER AS no_such_schema.bar);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP CAST IF EXISTS (no_such_schema.foo AS INTEGER);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP COLLATION IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP CONVERSION IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP DOMAIN IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP FOREIGN TABLE IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP FUNCTION IF EXISTS no_such_schema.foo();
NOTICE: schema "no_such_schema" does not exist, skipping
DROP FUNCTION IF EXISTS foo(no_such_type);
NOTICE: type "no_such_type" does not exist, skipping
DROP FUNCTION IF EXISTS foo(no_such_schema.no_such_type);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP INDEX IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP MATERIALIZED VIEW IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP OPERATOR IF EXISTS no_such_schema.+ (int, int);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP OPERATOR IF EXISTS + (no_such_type, no_such_type);
NOTICE: type "no_such_type" does not exist, skipping
DROP OPERATOR IF EXISTS + (no_such_schema.no_such_type, no_such_schema.no_such_type);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP OPERATOR IF EXISTS # (NONE, no_such_schema.no_such_type);
NOTICE: schema "no_such_schema" does not exist, skipping
DROP OPERATOR CLASS IF EXISTS no_such_schema.widget_ops USING btree;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP OPERATOR FAMILY IF EXISTS no_such_schema.float_ops USING btree;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP RULE IF EXISTS foo ON no_such_schema.bar;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP SEQUENCE IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TABLE IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TEXT SEARCH CONFIGURATION IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TEXT SEARCH DICTIONARY IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TEXT SEARCH PARSER IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TEXT SEARCH TEMPLATE IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TRIGGER IF EXISTS foo ON no_such_schema.bar;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP TYPE IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping
DROP VIEW IF EXISTS no_such_schema.foo;
NOTICE: schema "no_such_schema" does not exist, skipping

2
src/test/regress/expected/event_trigger.out
View File

@ -280,7 +280,7 @@ SELECT * FROM dropped_objects WHERE schema IS NULL OR schema <> 'pg_toast';
(23 rows)
DROP OWNED BY regression_bob;
NOTICE: table "audit_tbls_schema_one_table_two" does not exist, skipping
NOTICE: schema "audit_tbls" does not exist, skipping
CONTEXT: SQL statement "DROP TABLE IF EXISTS audit_tbls.audit_tbls_schema_one_table_two"
PL/pgSQL function test_evtrig_dropped_objects() line 8 at EXECUTE statement
SELECT * FROM dropped_objects WHERE type = 'schema';

41
src/test/regress/sql/drop_if_exists.sql
View File

@ -182,6 +182,9 @@ DROP TRIGGER IF EXISTS test_trigger_exists ON test_exists;
DROP TRIGGER test_trigger_exists ON no_such_table;
DROP TRIGGER IF EXISTS test_trigger_exists ON no_such_table;
DROP TRIGGER test_trigger_exists ON no_such_schema.no_such_table;
DROP TRIGGER IF EXISTS test_trigger_exists ON no_such_schema.no_such_table;
CREATE TRIGGER test_trigger_exists
BEFORE UPDATE ON test_exists
FOR EACH ROW EXECUTE PROCEDURE suppress_redundant_updates_trigger();
@ -194,6 +197,9 @@ DROP RULE IF EXISTS test_rule_exists ON test_exists;
DROP RULE test_rule_exists ON no_such_table;
DROP RULE IF EXISTS test_rule_exists ON no_such_table;
DROP RULE test_rule_exists ON no_such_schema.no_such_table;
DROP RULE IF EXISTS test_rule_exists ON no_such_schema.no_such_table;
CREATE RULE test_rule_exists AS ON INSERT TO test_exists
DO INSTEAD
INSERT INTO test_exists VALUES (NEW.a, NEW.b || NEW.a::text);
@ -226,3 +232,38 @@ DROP OPERATOR FAMILY IF EXISTS test_operator_family USING no_such_am;
DROP TABLE IF EXISTS test_exists;
DROP TABLE test_exists;
-- be tolerant with missing schemas, types, etc
DROP AGGREGATE IF EXISTS no_such_schema.foo(int);
DROP AGGREGATE IF EXISTS foo(no_such_type);
DROP AGGREGATE IF EXISTS foo(no_such_schema.no_such_type);
DROP CAST IF EXISTS (INTEGER AS no_such_type2);
DROP CAST IF EXISTS (no_such_type1 AS INTEGER);
DROP CAST IF EXISTS (INTEGER AS no_such_schema.bar);
DROP CAST IF EXISTS (no_such_schema.foo AS INTEGER);
DROP COLLATION IF EXISTS no_such_schema.foo;
DROP CONVERSION IF EXISTS no_such_schema.foo;
DROP DOMAIN IF EXISTS no_such_schema.foo;
DROP FOREIGN TABLE IF EXISTS no_such_schema.foo;
DROP FUNCTION IF EXISTS no_such_schema.foo();
DROP FUNCTION IF EXISTS foo(no_such_type);
DROP FUNCTION IF EXISTS foo(no_such_schema.no_such_type);
DROP INDEX IF EXISTS no_such_schema.foo;
DROP MATERIALIZED VIEW IF EXISTS no_such_schema.foo;
DROP OPERATOR IF EXISTS no_such_schema.+ (int, int);
DROP OPERATOR IF EXISTS + (no_such_type, no_such_type);
DROP OPERATOR IF EXISTS + (no_such_schema.no_such_type, no_such_schema.no_such_type);
DROP OPERATOR IF EXISTS # (NONE, no_such_schema.no_such_type);
DROP OPERATOR CLASS IF EXISTS no_such_schema.widget_ops USING btree;
DROP OPERATOR FAMILY IF EXISTS no_such_schema.float_ops USING btree;
DROP RULE IF EXISTS foo ON no_such_schema.bar;
DROP SEQUENCE IF EXISTS no_such_schema.foo;
DROP TABLE IF EXISTS no_such_schema.foo;
DROP TEXT SEARCH CONFIGURATION IF EXISTS no_such_schema.foo;
DROP TEXT SEARCH DICTIONARY IF EXISTS no_such_schema.foo;
DROP TEXT SEARCH PARSER IF EXISTS no_such_schema.foo;
DROP TEXT SEARCH TEMPLATE IF EXISTS no_such_schema.foo;
DROP TRIGGER IF EXISTS foo ON no_such_schema.bar;
DROP TYPE IF EXISTS no_such_schema.foo;
DROP VIEW IF EXISTS no_such_schema.foo;