Update information_schema documentation to match system tables.

Backpatch to 8.2.X.

diff --git a/doc/src/sgml/information_schema.sgml b/doc/src/sgml/information_schema.sgml
index 67ce7098c918247399e707c39f5eb0402b7725e1..8d0b8e409e1348c9c0c88367053ba5e5aad705de 100644 (file)
--- a/doc/src/sgml/information_schema.sgml
+++ b/doc/src/sgml/information_schema.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  The Information Schema
@@ -1876,7 +1876,7 @@
 SELECT c.column_name, c.data_type, e.data_type AS element_type
 FROM information_schema.columns c LEFT JOIN information_schema.element_types e
      ON ((c.table_catalog, c.table_schema, c.table_name, 'TABLE', c.dtd_identifier)
-       = (e.object_catalog, e.object_schema, e.object_name, e.object_type, e.array_type_identifier))
+       = (e.object_catalog, e.object_schema, e.object_name, e.object_type, e.dtd_identifier))
 WHERE c.table_schema = '...' AND c.table_name = '...'
 ORDER BY c.ordinal_position;
 
@@ -1936,13 +1936,11 @@ ORDER BY c.ordinal_position;
      
 
      
-      array_type_identifier
+      dtd_identifier
       sql_identifier
       
        The identifier of the data type descriptor of the array being
-       described.  Use this to join with the
-       dtd_identifier columns of other information
-       schema views.
+       described
       
      
 
@@ -2097,13 +2095,6 @@ ORDER BY c.ordinal_position;
       Always null, because arrays always have unlimited maximum cardinality in PostgreSQL
      
 
-     
-      dtd_identifier
-      sql_identifier
-      
-       An identifier of the data type descriptor of the element.  This
-       is currently not useful.
-