[development] Fundamental MySQL changes in Drupal 6 (six)

[Oswald Jaskolla]

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Dries Buytaert wrote:
> Chances are we happen to be backward compatible.

Then why drop support for 4.0 at all? Subqueries (and stored procedures
if 4.1 is skipped) allow optimizations, that are not possible in 4.0.
IMO these chances are lost when coding for compatibility.

Furthermore: The core might be compatible, some contributed modules
might not be. The moment that drupal does not officially support 4.0
anymore, module developers will use 4.1 features for their modules. The
effect will be that module developers will have to tell their users
which database version to use, because some users still have 4.0
installed and only notice the missing requirements when they install
such a module.

Greetings,
- --
Oswald Jaskolla
Ingenieurbüro Richard Schieferdecker
Kreuzherrenstraße 2, 52062 Aachen
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