As we are talking about "better default db schemas" here some other
suggestions:

In current MySQL releases the following statements are true when using
CHAR datatypes:

    "v" = "V"
    BINARY("v") != BINARY("V")

As functions usually make all SQL searches on indexed fields slower I
decided to use

   content    binary(1),     --- there can be 's' and 'S'

and

   mail_id    varbinary(12), --- otherwise not using BINARY() could lead
                             --- to unexpected behaviour for third-party
                             --- apps

One could also add

   quar_type  binary(1),

even if it is it not really needed right now.

Cheers,
Thomas Gelf


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