When ExeMgr processes a correlated exists filter for a subquery inside a
view the de-duplication check doesn't work. We sometimes check unique
with the view name, sometimes not. We don't need the view name here so
remove it if we don't have it.
Also push the view name in the subquery.
pDictionaryScan won't work for BLOB/TEXT since it requires searching the
data file and rebuilding the token from matches. The tokens can't be
rebuild correctly due the bits in the token used for block counts. This
patch forces the use of pDictionaryStep instead for WHERE conditions.
In addition this patch adds support for TEXT/BLOB in various parts of
the job step processing. This fixes things like error 202 during an
UPDATE with a join condition on TEXT/BLOB columns.
