E Special Neoview Features-Enabled Upon Request; Mode_Special_2 - HP Neoview SQL Reference Manual

E Special Neoview Features—Enabled Upon Request

Mode_Special_2

NOTE:
To enable these features, you must request access from your HP account representative.
Mode_special_2 is a mode that offers some compatibility with another DBMS. It is intended to
help you transition from your current platform to the Neoview platform.
HP recommends that you use Neoview syntax and semantics on the Neoview platform to avoid
getting errors. When you move from your current platform to Neoview, you might find the
Neoview syntax equivalent to your previous DBMS and use that instead. However, there are
cases when the syntax you use might be accepted by Neoview, but, because of differences between
the DBMS you are migrating from and Neoview, the semantics you get might not be the same.
In that case, you will not get an error but will get results different from what you are accustomed
to. The problem is that you might not know that the results are different. For example, you might
get different results for a case-insensitive predicate and not know that you are not getting matches
on rows you would otherwise see. You might also be unaware of precision and rounding
differences.
To ease your transition to Neoview, HP packages a set of other DBMS features. This set of features
is controlled by a Mode_Special_2 toggle, which can be enabled or disabled by HP at your request.
You should review the semantics in Mode_Special_2, which are described in
in Mode_Special_2" (page 532)
representative.
You should review the semantics in mode_special_2, which are described in
in Mode_Special_2" (page
for migration or for a longer period of time.
HP recommends that you enable the mode_special_2 features only during the time you are
migrating to the Neoview platform. You can use this mode to compare results between systems
and to ensure that the migration has been successful. After successfully migrating to the Neoview
platform, you should train users to use only the standard Neoview capabilities available with
the mode_special_2 toggle turned OFF and then request that HP disable the mode_special_2
features.
NOTE:
When mode_special_2 is turned OFF, you may encounter problems if you are
unintentionally using mode_special_2 features. For example, in mode_special_2, tables are
automatically created with character columns as case-insensitive if you do not explicitly specify
case sensitivity. When mode_special_2 is disabled, you get case-sensitive character columns if
you do not explicitly specify the case-sensitivity. To avoid unpleasant surprises when disabling
mode_special_2, HP recommends that you always explicitly specify CASESPECIFIC or NOT
CASESPECIFIC when creating character columns.
and see if you need them. If you do, contact your HP support
532), and see if you need them. If you do, you can enable them either
"Features Supported
"Features Supported
Mode_Special_2 531