On Thu, Feb 10, 2011 at 1:02 PM, Scott Ribe <scott_r...@elevated-dev.com> wrote:
> I know that I have at least one instance of a varchar that is not valid 
> UTF-8, imported from a source with errors (AMA CPT files, actually) before 
> PG's checking was as stringent as it is today. Can anybody suggest a query to 
> find such values?

If you know which table and column the data is in, you can also do
something like this:

(I typed this up without checking the syntax of it.  The basic idea is
to cast the column as bytea, encode with the 'escape' method, then
grep for back-slashes).

select * from bad_table where regexp_match (encode (bad_column::bytea,
'escape'), '\\\\'));

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