Use clearer woring for pg_locks columns, identifying which items are

related to lock objects.

diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index d4a1d3686f0c246a8c88e96a58772b1741ce3b81..c5851afefa85764d74690e70beb36e96f349778a 100644 (file)
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -6930,7 +6930,7 @@
       
        OID of the database in which the object exists, or
        zero if the object is a shared object, or
-       null if the object is a transaction ID
+       null if the lock object is on a transaction ID
       
      
      
@@ -6938,8 +6938,8 @@
       oid
       pg_class.oid
       
-       OID of the relation, or null if the object is not
-       a relation or part of a relation
+       OID of the relation, or null if the lock object is not
+       on a relation or part of a relation
       
      
      
@@ -6947,8 +6947,8 @@
       integer
       
       
-       Page number within the relation, or null if the object
-       is not a tuple or relation page
+       Page number within the relation, or null if the lock object
+       is not on a tuple or relation page
       
      
      
@@ -6956,7 +6956,8 @@
       smallint
       
       
-       Tuple number within the page, or null if the object is not a tuple
+       Tuple number within the page, or null if the lock object is not
+       on a tuple
       
      
      
@@ -6964,8 +6965,8 @@
       text
       
       
-       Virtual ID of a transaction, or null if the object is not a
-       virtual transaction ID
+       Virtual ID of a transaction lock, or null if the lock object is not
+       on a virtual transaction ID
       
      
      
@@ -6973,7 +6974,7 @@
       xid
       
       
-       ID of a transaction, or null if the object is not a transaction ID
+       ID of a transaction lock, or null if the lock object is not on a transaction ID
       
      
      
@@ -6982,7 +6983,7 @@
       pg_class.oid
       
        OID of the system catalog containing the object, or null if the
-       object is not a general database object
+       lock object is not on a general database object.
       
      
      
@@ -6991,7 +6992,7 @@
       any OID column
       
        OID of the object within its system catalog, or null if the
-       object is not a general database object.
+       lock object is not on a general database object.
        For advisory locks it is used to distinguish the two key
        spaces (1 for an int8 key, 2 for two int4 keys).
       
@@ -7004,7 +7005,7 @@
        For a table column, this is the column number (the
        classid and objid refer to the
        table itself).  For all other object types, this column is
-       zero.  Null if the object is not a general database object
+       zero.  Null if the lock object is not on a general database object.