Since SQL:2003, the array size specification in the SQL ARRAY syntax has

been optional.

diff --git a/doc/src/sgml/array.sgml b/doc/src/sgml/array.sgml
index f5888d7ff0dd99e3918f772e57f043c49770818f..32fd58138b6cc03c66505de03bd21b20d9f1ae63 100644 (file)
--- a/doc/src/sgml/array.sgml
+++ b/doc/src/sgml/array.sgml
@@ -76,9 +76,12 @@ CREATE TABLE tictactoe (
 <programlisting>
     pay_by_quarter  integer ARRAY[4],
 </programlisting>
-  This syntax requires an integer constant to denote the array size.
+  Or, if no array size is to be specified:
+<programlisting>
+    pay_by_quarter  integer ARRAY,
+</programlisting>
   As before, however, <productname>PostgreSQL</> does not enforce the
-  size restriction.
+  size restriction in any case.
  </para>
  </sect2>
 

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 70ea60a15a368bd6d32b2272e909735db4c0095d..94a91afe753e015b913ad5642045fa7f1eee87ef 100644 (file)
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -7124,19 +7124,29 @@ Typename:       SimpleTypename opt_array_bounds
                                        $$->arrayBounds = $3;
                                        $$->setof = TRUE;
                                }
+                       /* SQL standard syntax, currently only one-dimensional */
                        | SimpleTypename ARRAY '[' Iconst ']'
                                {
-                                       /* SQL99's redundant syntax */
                                        $$ = $1;
                                        $$->arrayBounds = list_make1(makeInteger($4));
                                }
                        | SETOF SimpleTypename ARRAY '[' Iconst ']'
                                {
-                                       /* SQL99's redundant syntax */
                                        $$ = $2;
                                        $$->arrayBounds = list_make1(makeInteger($5));
                                        $$->setof = TRUE;
                                }
+                       | SimpleTypename ARRAY
+                               {
+                                       $$ = $1;
+                                       $$->arrayBounds = list_make1(makeInteger(-1));
+                               }
+                       | SETOF SimpleTypename ARRAY
+                               {
+                                       $$ = $2;
+                                       $$->arrayBounds = list_make1(makeInteger(-1));
+                                       $$->setof = TRUE;
+                               }
                ;
 
 opt_array_bounds: