On 24/02/10 20:06, Raymond O'Donnell wrote:
However, to address your immediate problem, you could try something like
this:
(i) Create a new column of type numeric or integer as appropriate.
(ii) update your_table set new_column = CAST(trim(both ' 0' from
old_column) as numeric)
(iii) Drop the old column, as well as any constraints depending on it.
Or, in any recent version of PG you can do this via ALTER TABLE
http://www.postgresql.org/docs/8.4/static/sql-altertable.html
ALTER TABLE t ALTER COLUMN c TYPE integer USING c::integer;
You might want to clean up the values before doing this.
--
Richard Huxton
Archonet Ltd
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