Given the following table:

test=# \d f
          Table "f"
 Column |  Type   | Modifiers
--------+---------+-----------
 i      | integer |
 test   | text    |

If I do the following:

test=# insert into f values(1,'test');
INSERT 139549 1
test=# select i::int8,test from f;
 ?column? | test
----------+------
        1 | test
(1 row)

It doesn't make much sense that the first column should be called
'?column?'.

The patch results in the output appearing like this:

test=# select i::int8,test from f;
 i | test
---+------
 1 | test
(1 row)

----------

Gavin Sherry