Add current_schema() and current_schemas() inquiry functions.

Update has_table_privilege functions to cope with schema-qualified
names in the same way as nextval() and others.

doc/src/sgml/func.sgml

@@ -1,5 +1,5 @@
 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.95 2002/04/18 20:01:08 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.96 2002/04/26 01:24:08 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -3928,6 +3928,12 @@ SELECT TIMESTAMP 'now';
 nextval('foo')      <lineannotation>operates on sequence </><literal>foo</>
 nextval('FOO')      <lineannotation>operates on sequence </><literal>foo</>
 nextval('"Foo"')    <lineannotation>operates on sequence </><literal>Foo</>
+</programlisting>
+   The sequence name can be schema-qualified if necessary:
+<programlisting>
+nextval('myschema.foo') <lineannotation>operates on </><literal>myschema.foo</>
+nextval('"myschema".foo') <lineannotation>same as above</>
+nextval('foo')      <lineannotation>searches search path for </><literal>foo</>
 </programlisting>
    Of course, the text argument can be the result of an expression,
    not only a simple literal, which is occasionally useful.
@@ -4212,17 +4218,27 @@ SELECT NULLIF(value, '(none)') ...
       <row>
        <entry><function>current_user</></entry>
        <entry><type>name</></entry>
-       <entry>user name of current execution context</>
+       <entry>user name of current execution context</entry>
       </row>
       <row>
        <entry><function>session_user</></entry>
        <entry><type>name</></entry>
-       <entry>session user name</>
+       <entry>session user name</entry>
       </row>
       <row>
        <entry><function>user</></entry>
        <entry><type>name</></entry>
-       <entry>equivalent to <function>current_user</></>
+       <entry>equivalent to <function>current_user</></entry>
+      </row>
+      <row>
+       <entry><function>current_schema()</></entry>
+       <entry><type>name</></entry>
+       <entry>name of current schema</entry>
+      </row>
+      <row>
+       <entry><function>current_schemas()</></entry>
+       <entry><type>name[]</></entry>
+       <entry>names of schemas in search path</entry>
       </row>
      </tbody>
     </tgroup>
@@ -4233,6 +4249,16 @@ SELECT NULLIF(value, '(none)') ...
     <secondary>current</secondary>
    </indexterm>
 
+   <indexterm zone="functions-misc">
+    <primary>schema</primary>
+    <secondary>current</secondary>
+   </indexterm>
+
+   <indexterm zone="functions-misc">
+    <primary>search path</primary>
+    <secondary>current</secondary>
+   </indexterm>
+
    <para>
     The <function>session_user</> is the user that initiated a database
     connection; it is fixed for the duration of that connection. The
@@ -4244,10 +4270,13 @@ SELECT NULLIF(value, '(none)') ...
     and the current user is the <quote>effective user</>.
    </para>
 
+   <note>
     <para>
-    Note that these functions have special syntactic status in <acronym>SQL</>:
+     <function>current_user</>, <function>session_user</>, and
+     <function>user</> have special syntactic status in <acronym>SQL</>:
      they must be called without trailing parentheses.
     </para>
+   </note>
 
    <note>
     <title>Deprecated</>
@@ -4257,6 +4286,17 @@ SELECT NULLIF(value, '(none)') ...
     </para>
    </note>
 
+   <para>
+    <function>current_schema</> returns the name of the schema that is
+    at the front of the search path (or NULL if the search path is
+    empty).  This is the schema that will be used for any tables or
+    other named objects that are created without specifying a target schema.
+    <function>current_schemas</> returns an array of the names of all
+    schemas presently in the search path.  Note that these functions show
+    only schemas that are explicitly part of the path; when a system schema
+    is being searched implicitly, it is not listed.
+   </para>
+
    <table>
     <title>System Information Functions</>
     <tgroup cols="3">
@@ -4323,11 +4363,17 @@ SELECT NULLIF(value, '(none)') ...
     <function>current_user</> is assumed.  The table can be specified
     by name or by OID.  (Thus, there are actually six variants of
     <function>has_table_privilege</>, which can be distinguished by
-    the number and types of their arguments.)  The desired access type
+    the number and types of their arguments.)  When specifying by name,
+    the name can be schema-qualified if necessary.
+    The desired access type
     is specified by a text string, which must evaluate to one of the
     values <literal>SELECT</>, <literal>INSERT</>, <literal>UPDATE</>,
     <literal>DELETE</>, <literal>RULE</>, <literal>REFERENCES</>, or
     <literal>TRIGGER</>.  (Case of the string is not significant, however.)
+    An example is:
+<programlisting>
+SELECT has_table_privilege('myschema.mytable', 'select');
+</programlisting>
    </para>
 
    <table>

doc/src/sgml/runtime.sgml

@@ -1,5 +1,5 @@
 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.113 2002/04/15 22:33:20 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.114 2002/04/26 01:24:08 tgl Exp $
 -->
 
 <Chapter Id="runtime">
@@ -1252,6 +1252,15 @@ dynamic_library_path = '/usr/local/lib/postgresql:/home/my_project/lib:$libdir'
 	The administrator may choose to restrict permissions on
 	<literal>public</> or even remove it, if that suits his purposes.
        </para>
+
+       <para>
+        The current effective value of the search path can be examined
+	via the SQL function <function>current_schemas()</>.  This is not
+	quite the same as examining the value of
+	<varname>search_path</varname>, since <function>current_schemas()</>
+	shows how the requests appearing in <varname>search_path</varname>
+	were resolved.
+       </para>
       </listitem>
      </varlistentry>
 

src/backend/catalog/namespace.c

@@ -13,7 +13,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.12 2002/04/25 02:56:55 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.13 2002/04/26 01:24:08 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1470,3 +1470,14 @@ InitializeSearchPath(void)
 			assign_search_path(namespace_search_path);
 	}
 }
+
+/*
+ * Fetch the active search path, expressed as a List of OIDs.
+ *
+ * NB: caller must treat the list as read-only!
+ */
+List *
+fetch_search_path(void)
+{
+	return namespaceSearchPath;
+}

src/backend/utils/adt/acl.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v 1.71 2002/04/21 00:26:43 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v 1.72 2002/04/26 01:24:08 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -35,12 +35,7 @@ static bool aclitemeq(const AclItem *a1, const AclItem *a2);
 static bool aclitemgt(const AclItem *a1, const AclItem *a2);
 
 static AclMode convert_priv_string(text *priv_type_text);
-static bool has_table_privilege_cname_cname(char *username, char *relname,
+static Oid convert_rel_name(text *relname);
-								text *priv_type_text);
-static bool has_table_privilege_cname_id(char *username, Oid reloid,
-							 text *priv_type_text);
-static bool has_table_privilege_id_cname(int32 usesysid, char *relname,
-							 text *priv_type_text);
 
 
 /*
@@ -653,7 +648,7 @@ aclcontains(PG_FUNCTION_ARGS)
 /*
  * has_table_privilege_name_name
  *		Check user privileges on a relation given
- *		name username, name relname, and text priv name.
+ *		name username, text relname, and text priv name.
  *
  * RETURNS
  *		a boolean value
@@ -664,22 +659,41 @@ Datum
 has_table_privilege_name_name(PG_FUNCTION_ARGS)
 {
 	Name		username = PG_GETARG_NAME(0);
-	Name		relname = PG_GETARG_NAME(1);
+	text	   *relname = PG_GETARG_TEXT_P(1);
 	text	   *priv_type_text = PG_GETARG_TEXT_P(2);
-	bool		result;
+	int32		usesysid;
+	Oid			reloid;
+	AclMode		mode;
+	int32		aclresult;
 
-	result = has_table_privilege_cname_cname(NameStr(*username),
+	/*
-											 NameStr(*relname),
+	 * Lookup userid based on username
-											 priv_type_text);
+	 */
+	usesysid = get_usesysid(NameStr(*username));
 
-	PG_RETURN_BOOL(result);
+	/*
+	 * Lookup rel OID based on relname
+	 */
+	reloid = convert_rel_name(relname);
+
+	/*
+	 * Convert priv_type_text to an AclMode
+	 */
+	mode = convert_priv_string(priv_type_text);
+
+	/*
+	 * Check for the privilege
+	 */
+	aclresult = pg_class_aclcheck(reloid, usesysid, mode);
+
+	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
 
 
 /*
  * has_table_privilege_name
  *		Check user privileges on a relation given
- *		name relname and text priv name.
+ *		text relname and text priv name.
  *		current_user is assumed
  *
  * RETURNS
@@ -690,18 +704,31 @@ has_table_privilege_name_name(PG_FUNCTION_ARGS)
 Datum
 has_table_privilege_name(PG_FUNCTION_ARGS)
 {
-	Name		relname = PG_GETARG_NAME(0);
+	text	   *relname = PG_GETARG_TEXT_P(0);
 	text	   *priv_type_text = PG_GETARG_TEXT_P(1);
 	int32		usesysid;
-	bool		result;
+	Oid			reloid;
+	AclMode		mode;
+	int32		aclresult;
 
 	usesysid = GetUserId();
 
-	result = has_table_privilege_id_cname(usesysid,
+	/*
-										  NameStr(*relname),
+	 * Lookup rel OID based on relname
-										  priv_type_text);
+	 */
+	reloid = convert_rel_name(relname);
 
-	PG_RETURN_BOOL(result);
+	/*
+	 * Convert priv_type_text to an AclMode
+	 */
+	mode = convert_priv_string(priv_type_text);
+
+	/*
+	 * Check for the privilege
+	 */
+	aclresult = pg_class_aclcheck(reloid, usesysid, mode);
+
+	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
 
 
@@ -721,13 +748,26 @@ has_table_privilege_name_id(PG_FUNCTION_ARGS)
 	Name		username = PG_GETARG_NAME(0);
 	Oid			reloid = PG_GETARG_OID(1);
 	text	   *priv_type_text = PG_GETARG_TEXT_P(2);
-	bool		result;
+	int32		usesysid;
+	AclMode		mode;
+	int32		aclresult;
 
-	result = has_table_privilege_cname_id(NameStr(*username),
+	/*
-										  reloid,
+	 * Lookup userid based on username
-										  priv_type_text);
+	 */
+	usesysid = get_usesysid(NameStr(*username));
 
-	PG_RETURN_BOOL(result);
+	/*
+	 * Convert priv_type_text to an AclMode
+	 */
+	mode = convert_priv_string(priv_type_text);
+
+	/*
+	 * Check for the privilege
+	 */
+	aclresult = pg_class_aclcheck(reloid, usesysid, mode);
+
+	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
 
 
@@ -749,7 +789,7 @@ has_table_privilege_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_P(1);
 	int32		usesysid;
 	AclMode		mode;
-	int32		result;
+	int32		aclresult;
 
 	usesysid = GetUserId();
 
@@ -761,19 +801,16 @@ has_table_privilege_id(PG_FUNCTION_ARGS)
 	/*
 	 * Check for the privilege
 	 */
-	result = pg_class_aclcheck(reloid, usesysid, mode);
+	aclresult = pg_class_aclcheck(reloid, usesysid, mode);
 
-	if (result == ACLCHECK_OK)
+	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
-		PG_RETURN_BOOL(true);
-	else
-		PG_RETURN_BOOL(false);
 }
 
 
 /*
  * has_table_privilege_id_name
  *		Check user privileges on a relation given
- *		usesysid, name relname, and priv name.
+ *		usesysid, text relname, and priv name.
  *
  * RETURNS
  *		a boolean value
@@ -784,15 +821,28 @@ Datum
 has_table_privilege_id_name(PG_FUNCTION_ARGS)
 {
 	int32		usesysid = PG_GETARG_INT32(0);
-	Name		relname = PG_GETARG_NAME(1);
+	text	   *relname = PG_GETARG_TEXT_P(1);
 	text	   *priv_type_text = PG_GETARG_TEXT_P(2);
-	bool		result;
+	Oid			reloid;
+	AclMode		mode;
+	int32		aclresult;
 
-	result = has_table_privilege_id_cname(usesysid,
+	/*
-										  NameStr(*relname),
+	 * Lookup rel OID based on relname
-										  priv_type_text);
+	 */
+	reloid = convert_rel_name(relname);
 
-	PG_RETURN_BOOL(result);
+	/*
+	 * Convert priv_type_text to an AclMode
+	 */
+	mode = convert_priv_string(priv_type_text);
+
+	/*
+	 * Check for the privilege
+	 */
+	aclresult = pg_class_aclcheck(reloid, usesysid, mode);
+
+	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
 
 
@@ -813,7 +863,7 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
 	Oid			reloid = PG_GETARG_OID(1);
 	text	   *priv_type_text = PG_GETARG_TEXT_P(2);
 	AclMode		mode;
-	int32		result;
+	int32		aclresult;
 
 	/*
 	 * Convert priv_type_text to an AclMode
@@ -823,18 +873,29 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
 	/*
 	 * Check for the privilege
 	 */
-	result = pg_class_aclcheck(reloid, usesysid, mode);
+	aclresult = pg_class_aclcheck(reloid, usesysid, mode);
 
-	if (result == ACLCHECK_OK)
+	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
-		PG_RETURN_BOOL(true);
-	else
-		PG_RETURN_BOOL(false);
 }
 
 /*
  *		Internal functions.
  */
 
+/*
+ * Given a relation name expressed as a string, look it up and return Oid
+ */
+static Oid
+convert_rel_name(text *relname)
+{
+	RangeVar   *relrv;
+
+	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname,
+													"has_table_privilege"));
+
+	return RangeVarGetRelid(relrv, false);
+}
+
 /*
  * convert_priv_string
  *		Internal function.
@@ -843,11 +904,13 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
  * RETURNS
  *		AclMode
  */
-
 static AclMode
 convert_priv_string(text *priv_type_text)
 {
-	char	   *priv_type = DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(priv_type_text)));
+	char	   *priv_type;
+
+	priv_type = DatumGetCString(DirectFunctionCall1(textout,
+											PointerGetDatum(priv_type_text)));
 
 	/*
 	 * Return mode from priv_type string
@@ -880,114 +943,3 @@ convert_priv_string(text *priv_type_text)
 	 */
 	return ACL_NO_RIGHTS;
 }
-
-/*
- * has_table_privilege_cname_cname
- *		Check user privileges on a relation given
- *		char *usename, char *relname, and text priv name.
- *
- * RETURNS
- *		a boolean value
- *		't' indicating user has the privilege
- *		'f' indicating user does not have the privilege
- */
-static bool
-has_table_privilege_cname_cname(char *username, char *relname,
-								text *priv_type_text)
-{
-	int32		usesysid;
-
-	/*
-	 * Lookup userid based on username
-	 */
-	usesysid = get_usesysid(username);
-
-	/*
-	 * Make use of has_table_privilege_id_cname. It accepts the arguments
-	 * we now have.
-	 */
-	return has_table_privilege_id_cname(usesysid, relname, priv_type_text);
-}
-
-
-/*
- * has_table_privilege_cname_id
- *		Check user privileges on a relation given
- *		char *usename, rel oid, and text priv name.
- *
- * RETURNS
- *		a boolean value
- *		't' indicating user has the privilege
- *		'f' indicating user does not have the privilege
- */
-static bool
-has_table_privilege_cname_id(char *username, Oid reloid,
-							 text *priv_type_text)
-{
-	int32		usesysid;
-	AclMode		mode;
-	int32		result;
-
-	/*
-	 * Lookup userid based on username
-	 */
-	usesysid = get_usesysid(username);
-
-	/*
-	 * Convert priv_type_text to an AclMode
-	 */
-	mode = convert_priv_string(priv_type_text);
-
-	/*
-	 * Finally, check for the privilege
-	 */
-	result = pg_class_aclcheck(reloid, usesysid, mode);
-
-	if (result == ACLCHECK_OK)
-		return true;
-	else
-		return false;
-}
-
-
-/*
- * has_table_privilege_id_cname
- *		Check user privileges on a relation given
- *		usesysid, char *relname, and text priv name.
- *
- * RETURNS
- *		a boolean value
- *		't' indicating user has the privilege
- *		'f' indicating user does not have the privilege
- */
-static bool
-has_table_privilege_id_cname(int32 usesysid, char *relname,
-							 text *priv_type_text)
-{
-	Oid			reloid;
-	AclMode		mode;
-	int32		result;
-
-	/*
-	 * Convert relname to rel OID.
-	 */
-	reloid = RelnameGetRelid(relname);
-	if (!OidIsValid(reloid))
-		elog(ERROR, "has_table_privilege: relation \"%s\" does not exist",
-			 relname);
-
-	/*
-	 * Convert priv_type_text to an AclMode
-	 */
-	mode = convert_priv_string(priv_type_text);
-
-	/*
-	 * Finally, check for the privilege
-	 */
-	result = pg_class_aclcheck(reloid, usesysid, mode);
-
-	if (result == ACLCHECK_OK)
-		return true;
-	else
-		return false;
-}

src/backend/utils/adt/name.c

@@ -12,14 +12,18 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/name.c,v 1.33 2001/10/28 06:25:52 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/name.c,v 1.34 2002/04/26 01:24:08 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include "postgres.h"
 
+#include "catalog/namespace.h"
 #include "miscadmin.h"
+#include "utils/array.h"
 #include "utils/builtins.h"
+#include "utils/lsyscache.h"
+
 
 /*****************************************************************************
  *	 USER I/O ROUTINES (none)												 *
@@ -209,7 +213,9 @@ namestrcmp(Name name, const char *str)
 }
 
 
-/* SQL-functions CURRENT_USER and SESSION_USER */
+/*
+ * SQL-functions CURRENT_USER, SESSION_USER
+ */
 Datum
 current_user(PG_FUNCTION_ARGS)
 {
@@ -223,6 +229,52 @@ session_user(PG_FUNCTION_ARGS)
 }
 
 
+/*
+ * SQL-functions CURRENT_SCHEMA, CURRENT_SCHEMAS
+ */
+Datum
+current_schema(PG_FUNCTION_ARGS)
+{
+	List   *search_path = fetch_search_path();
+	char   *nspname;
+
+	if (search_path == NIL)
+		PG_RETURN_NULL();
+	nspname = get_namespace_name((Oid) lfirsti(search_path));
+	PG_RETURN_DATUM(DirectFunctionCall1(namein, CStringGetDatum(nspname)));
+}
+
+Datum
+current_schemas(PG_FUNCTION_ARGS)
+{
+	List   *search_path = fetch_search_path();
+	int		nnames = length(search_path);
+	Datum  *names;
+	int		i;
+	ArrayType *array;
+
+	/* +1 here is just to avoid palloc(0) error */
+	names = (Datum *) palloc((nnames + 1) * sizeof(Datum));
+	i = 0;
+	while (search_path)
+	{
+		char   *nspname;
+
+		nspname = get_namespace_name((Oid) lfirsti(search_path));
+		names[i] = DirectFunctionCall1(namein, CStringGetDatum(nspname));
+		i++;
+		search_path = lnext(search_path);
+	}
+
+	array = construct_array(names, nnames,
+							false, /* Name is not by-val */
+							NAMEDATALEN, /* sizeof(Name) */
+							'i'); /* alignment of Name */
+
+	PG_RETURN_POINTER(array);
+}
+
+
 /*****************************************************************************
  *	 PRIVATE ROUTINES														 *
  *****************************************************************************/

src/include/catalog/catversion.h

@@ -37,7 +37,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: catversion.h,v 1.126 2002/04/25 02:56:56 tgl Exp $
+ * $Id: catversion.h,v 1.127 2002/04/26 01:24:08 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	200204242
+#define CATALOG_VERSION_NO	200204251
 
 #endif

src/include/catalog/namespace.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: namespace.h,v 1.10 2002/04/25 02:56:56 tgl Exp $
+ * $Id: namespace.h,v 1.11 2002/04/26 01:24:08 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -79,4 +79,6 @@ extern bool check_search_path(const char *proposed);
 extern void assign_search_path(const char *newval);
 extern void InitializeSearchPath(void);
 
+extern List *fetch_search_path(void);
+
 #endif   /* NAMESPACE_H */

src/include/catalog/pg_proc.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_proc.h,v 1.233 2002/04/25 02:56:56 tgl Exp $
+ * $Id: pg_proc.h,v 1.234 2002/04/26 01:24:08 tgl Exp $
  *
  * NOTES
  *	  The script catalog/genbki.sh reads this file and generates .bki
@@ -1751,6 +1751,11 @@ DESCR("convert varchar to name");
 DATA(insert OID = 1401 (  varchar	   PGNSP PGUID 12 f t t t f i 1 1043 "19" 100 0 0 100  name_text - _null_ ));
 DESCR("convert name to varchar");
 
+DATA(insert OID = 1402 (  current_schema	PGNSP PGUID 12 f t f t f s 0    19 "0" 100 0 0 100	current_schema - _null_ ));
+DESCR("current schema name");
+DATA(insert OID = 1403 (  current_schemas	PGNSP PGUID 12 f t f t f s 0  1003 "0" 100 0 0 100	current_schemas - _null_ ));
+DESCR("current schema search list");
+
 DATA(insert OID = 1406 (  isvertical		PGNSP PGUID 12 f t f t f i 2	16 "600 600" 100 0 0 100  point_vert - _null_ ));
 DESCR("vertically aligned?");
 DATA(insert OID = 1407 (  ishorizontal		PGNSP PGUID 12 f t f t f i 2	16 "600 600" 100 0 0 100  point_horiz - _null_ ));
@@ -2663,15 +2668,15 @@ DESCR("unary plus");
 DATA(insert OID = 1915 (  numeric_uplus    PGNSP PGUID 12 f t f t f i 1 1700 "1700" 100 0 0 100  numeric_uplus - _null_ ));
 DESCR("unary plus");
 
-DATA(insert OID = 1922 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 3 16 "19 19 25" 100 0 0 100  has_table_privilege_name_name - _null_ ));
+DATA(insert OID = 1922 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 3 16 "19 25 25" 100 0 0 100  has_table_privilege_name_name - _null_ ));
 DESCR("user privilege on relation by username, relname");
 DATA(insert OID = 1923 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 3 16 "19 26 25" 100 0 0 100  has_table_privilege_name_id - _null_ ));
 DESCR("user privilege on relation by username, rel oid");
-DATA(insert OID = 1924 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 3 16 "23 19 25" 100 0 0 100  has_table_privilege_id_name - _null_ ));
+DATA(insert OID = 1924 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 3 16 "23 25 25" 100 0 0 100  has_table_privilege_id_name - _null_ ));
 DESCR("user privilege on relation by usesysid, relname");
 DATA(insert OID = 1925 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 3 16 "23 26 25" 100 0 0 100  has_table_privilege_id_id - _null_ ));
 DESCR("user privilege on relation by usesysid, rel oid");
-DATA(insert OID = 1926 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 2 16 "19 25" 100 0 0 100	has_table_privilege_name - _null_ ));
+DATA(insert OID = 1926 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 2 16 "25 25" 100 0 0 100	has_table_privilege_name - _null_ ));
 DESCR("current user privilege on relation by relname");
 DATA(insert OID = 1927 (  has_table_privilege		   PGNSP PGUID 12 f t f t f s 2 16 "26 25" 100 0 0 100	has_table_privilege_id - _null_ ));
 DESCR("current user privilege on relation by rel oid");

src/include/utils/builtins.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: builtins.h,v 1.179 2002/04/25 02:56:56 tgl Exp $
+ * $Id: builtins.h,v 1.180 2002/04/26 01:24:08 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -164,6 +164,8 @@ extern int	namestrcpy(Name name, const char *str);
 extern int	namestrcmp(Name name, const char *str);
 extern Datum current_user(PG_FUNCTION_ARGS);
 extern Datum session_user(PG_FUNCTION_ARGS);
+extern Datum current_schema(PG_FUNCTION_ARGS);
+extern Datum current_schemas(PG_FUNCTION_ARGS);
 
 /* numutils.c */
 extern int32 pg_atoi(char *s, int size, int c);

src/test/regress/expected/privileges.out

@@ -240,7 +240,7 @@ select has_table_privilege(NULL,'pg_shadow','select');
 (1 row)
 
 select has_table_privilege('pg_shad','select');
-ERROR:  has_table_privilege: relation "pg_shad" does not exist
+ERROR:  Relation "pg_shad" does not exist
 select has_table_privilege('nosuchuser','pg_shadow','select');
 ERROR:  user "nosuchuser" does not exist
 select has_table_privilege('pg_shadow','sel');