Doc: remove obsolete statements about system OID columns in ALTER TABLE.

Missed in commit 578b22971.

diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index be1647937dc3fb02291d866719368f95a50f69a9..2cec1864dd0cdc9e59a8be0472862195209e7eac 100644 (file)
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -616,9 +616,9 @@ WITH ( MODULUS numeric_literal, REM
     SET WITHOUT OIDS
     
      
-      Backward compatibility syntax for removing the oid
-      system column. As oid system columns cannot be added anymore, this never
-      has an effect.
+      Backward-compatible syntax for removing the oid
+      system column.  As oid system columns cannot be
+      added anymore, this never has an effect.
      
     
    
@@ -744,8 +744,7 @@ WITH ( MODULUS numeric_literal, REM
      
       This form links the table to a composite type as though CREATE
       TABLE OF had formed it.  The table's list of column names and types
-      must precisely match that of the composite type; the presence of
-      an oid system column is permitted to differ.  The table must
+      must precisely match that of the composite type.  The table must
       not inherit from any other table.  These restrictions ensure
       that CREATE TABLE OF would permit an equivalent table
       definition.
@@ -1178,8 +1177,7 @@ WITH ( MODULUS numeric_literal, REM
     the column contents and the old type is either binary coercible to the new
     type or an unconstrained domain over the new type, a table rewrite is not
     needed; but any indexes on the affected columns must still be rebuilt.
-    Adding or removing a system oid column also requires
-    rewriting the entire table.  Table and/or index rebuilds may take a
+    Table and/or index rebuilds may take a
     significant amount of time for a large table; and will temporarily require
     as much as double the disk space.
    
@@ -1208,9 +1206,7 @@ WITH ( MODULUS numeric_literal, REM
     column. Thus, dropping a column is quick but it will not immediately
     reduce the on-disk size of your table, as the space occupied
     by the dropped column is not reclaimed.  The space will be
-    reclaimed over time as existing rows are updated.  (These statements do
-    not apply when dropping the system oid column; that is done
-    with an immediate rewrite.)
+    reclaimed over time as existing rows are updated.