On Mar 1, 2014, at 9:14 AM, Martin Matusiak <[email protected]> wrote:

> Is there a rationale for why we don't do this?

Perhaps because handling data constraint is the db job?

In the case of sqlite, which is very free form, simply define the proper check 
constraints.

For example:

create table foo
(
  bar text not null,
  check( typeof( bar ) = 'text' and length( bar ) <= 10 )
);


sqlite> insert into foo values( 1 );
Error: CHECK constraint failed: foo

sqlite> insert into foo values( '12345678901' );
Error: CHECK constraint failed: foo

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