Revert removal of pre-7.4 documenation behavior mentions.

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index f7c954a58c5831832ae5b67fd7c8e8e05729c52e..f866bee8db5cfb92db68c43ff6e7667cce52f9dd 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1,4 +1,4 @@
-
+
 
  
   Data Types
@@ -715,7 +715,11 @@ NUMERIC
 
     
      
-      The assumption that real and
+      Prior to PostgreSQL 7.4, the precision in
+      float(p) was taken to mean
+      so many decimal digits.  This has been corrected to match the SQL
+      standard, which specifies that the precision is measured in binary
+      digits.  The assumption that real and
       double precision have exactly 24 and 53 bits in the
       mantissa respectively is correct for IEEE-standard floating point
       implementations.  On non-IEEE platforms it might be off a little, but
@@ -791,9 +795,11 @@ ALTER SEQUENCE tablename_
 
     
      
-      If you wish a serial column to have a unique constraint or be
-      a primary key, it must be specified, just like any other data
-      type.
+      Prior to PostgreSQL 7.3, serial
+      implied UNIQUE.  This is no longer automatic.  If
+      you wish a serial column to have a unique constraint or be a
+      primary key, it must now be specified, just like
+      any other data type.
      
     
 
@@ -1515,6 +1521,14 @@ SELECT E'\\xDEADBEEF';
      
     
 
+   
+    
+     Prior to PostgreSQL 7.3, writing just
+     timestamp was equivalent to timestamp with
+     time zone.  This was changed for SQL compliance.
+    
+   
+
    
     time, timestamp, and
     interval accept an optional precision value

diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 39582d166710bf7f6d0f7a56701e06a5c4945cf4..01f9acfd23e7e0ac448e1ccdb4a9fd29d0786478 100644 (file)
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Data Definition
@@ -1795,12 +1795,18 @@ REVOKE CREATE ON SCHEMA public FROM PUBLIC;
    
 
    
-    It is best to avoid table names beginning with pg_
-    because they might someday conflict with system catalogs of the
-    same name.  (PostgreSQL system catalog
-    table names always start with pg_).  Of course, table
-    names can always be schema-qualified to avoid conflicting with
-    system catalog table names.
+    In PostgreSQL versions before 7.3,
+    table names beginning with pg_ were reserved.  This is
+    no longer true: you can create such a table name if you wish, in
+    any non-system schema.  However, it's best to continue to avoid
+    such names, to ensure that you won't suffer a conflict if some
+    future version defines a system table named the same as your
+    table.  (With the default search path, an unqualified reference to
+    your table name would then be resolved as the system table instead.)
+    System tables will continue to follow the convention of having
+    names beginning with pg_, so that they will not
+    conflict with unqualified user-table names so long as users avoid
+    the pg_ prefix.
    
   
 
@@ -3034,6 +3040,15 @@ DROP TABLE products CASCADE;
    
   
 
+  
+   
+    Foreign key constraint dependencies and serial column dependencies
+    from PostgreSQL versions prior to 7.3
+    are not maintained or created during the
+    upgrade process.  All other dependency types will be properly
+    created during an upgrade from a pre-7.3 database.
+   
+  
  
 
 

diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index 611f679c4d328ba6b55dcecd0160b69e9b0d1047..13658470955c08a5ffd6414d7df9faa968578825 100644 (file)
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  <application>libpq</application> - C Library
@@ -1203,6 +1203,14 @@ PQconninfoOption *PQconninfoParse(const char *conninfo, char **errmsg);
        has been sent to the server and not yet completed.
       
 
+      
+       
+        PQtransactionStatus will give incorrect results when using
+        a PostgreSQL 7.3 server that has the parameter autocommit
+        set to off.  The server-side autocommit feature has been
+        deprecated and does not exist in later server versions.
+       
+      
      
     
 

diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml
index 3b1cd38287b198c191fdb67ce1aef09e516c67b4..d8e7720544deca46d5fac0ee66c7cdb58695b3ab 100644 (file)
--- a/doc/src/sgml/protocol.sgml
+++ b/doc/src/sgml/protocol.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Frontend/Backend Protocol
@@ -165,8 +165,8 @@
 
    
     Data of a particular data type might be transmitted in any of several
-    different formats.
-    The only supported formats are text and binary,
+    different formats.  As of PostgreSQL 7.4
+    the only supported formats are text and binary,
     but the protocol makes provision for future extensions.  The desired
     format for any value is specified by a format code.
     Clients can specify a format code for each transmitted parameter value

diff --git a/doc/src/sgml/rules.sgml b/doc/src/sgml/rules.sgml
index 44071ce743cd634e3e3bacbf1842b6a4e5fc8ab5..7b1a136cd680bcfd73851084a1a26ecfb0c8d935 100644 (file)
--- a/doc/src/sgml/rules.sgml
+++ b/doc/src/sgml/rules.sgml
@@ -1,4 +1,4 @@
-
+
 
 
 The Rule System
@@ -1828,6 +1828,9 @@ GRANT SELECT ON phone_number TO secretary;
      
     
 
+    (This system was established in PostgreSQL 7.3.
+    In versions before that, the command status might show different
+    results when rules exist.)
 
 
 

diff --git a/doc/src/sgml/xindex.sgml b/doc/src/sgml/xindex.sgml
index fa9fecf5ba3a26c29b8299ae104b83eadd128767..1da74b9fa3dd7733ce38486d425528cf0ed0aaaa 100644 (file)
--- a/doc/src/sgml/xindex.sgml
+++ b/doc/src/sgml/xindex.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Interfacing Extensions To Indexes
@@ -895,6 +895,16 @@ ALTER OPERATOR FAMILY integer_ops USING btree ADD
    try to use these SQL features with the data type.
   
 
+   
+    
+     In PostgreSQL versions before 7.4,
+     sorting and grouping operations would implicitly use operators named
+     =, <, and >.  The new
+     behavior of relying on default operator classes avoids having to make
+     any assumption about the behavior of operators with particular names.
+    
+   
+
   
    Another important point is that an operator that
    appears in a hash operator family is a candidate for hash joins,