If I write
sqlite> CREATE TABLE T1 (N INTEGER CHECK(N >= 0));
the constraint is applied AFTER converting N to an integer.
sqlite> INSERT INTO T1 VALUES('42');
sqlite> INSERT INTO T1 VALUES('-5');
SQL error: constraint failed
But if I write
sqlite> CREATE TABLE T2 (N INTEGER CHECK(TYPEOF(N) = 'integer'));
the constraint is applied BEFORE converting N to an integer.
sqlite> INSERT INTO T2 VALUES(17);
sqlite> INSERT INTO T2 VALUES('18');
SQL error: constraint failed
Why the inconsistency?
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