Why we haven't boolean datatype in Firebird? -

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unless i'm totally wrong, have no boolean datatype (1 bit) in firebird, sql server. why? think boolean usefull in various situations... , low space consuption...

firebird has booleans, in form of bit data type.

http://www.firebirdsql.org/manual/migration-mssql-data-types.html

fta:

converting bit data type

the bit data type used hold single boolean value, 0 or 1. ms sql not support assigning null fields. interbase can emulate integer or char(1) data type.

the acceptable values can restricted using domains. more information on firebird domains, see data definition documentation.


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