"Bruce Momjian" <[EMAIL PROTECTED]> writes:

> Gregory Stark wrote:
>> Is your database initialized with C locale? If so then length(text) is
>> optimized to not have to detoast:
>>      if (pg_database_encoding_max_length() == 1)
>>              PG_RETURN_INT32(toast_raw_datum_size(str) - VARHDRSZ);
> Wow, we optimized length().  OK, will run the test with
> substring(t,1,1).

No, we did substring() too :)

You could try hashtext()

  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com

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