I think it's important that it's actually documented that they can add

primary keys after the fact!

Also, we need to add regression tests for alter table / add primary key
and alter table / drop constraint.  These shouldn't be added until 7.3
tho
methinks...

Chris

diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 29213b96a519ef7f504f1dab43a9ac1fa412dcc7..ef58e94a44230eed792dbca770beda3ead8d5966 100644 (file)
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -1,5 +1,5 @@
 
 
@@ -295,6 +295,15 @@ ALTER TABLE distributors ADD CONSTRAINT dist_id_zipcode_key UNIQUE (dist_id, zip
   
  
 
+   
+   To add an automatically named primary key constraint to a table, noting
+   that a table can only ever have one primary key:
+   
+ALTER TABLE distributors ADD PRIMARY KEY (dist_id);
+   
+  
+ 
+
  
   </div>
<div class="diff ctx">    Compatibility</div>
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