Module codes 

The extended result codes a rejected write reports.

The numbers are SQLite’s own extended codes. They are written out rather than derived because an application matches on them, and a code that was computed from an enum’s discriminant would change the day the enum did.

They live here, beside the binder that decides which constraint a statement can violate, because both engines report them: the virtual machine compiles them into a HaltError and the vectorised executor returns them from its write path. Two copies would agree until one of them was corrected.

Constants

CHECK

SQLITE_CONSTRAINT_CHECK.

DATATYPE

SQLITE_CONSTRAINT_DATATYPE, which a STRICT table reports.

FOREIGN_KEY

SQLITE_CONSTRAINT_FOREIGNKEY.

MISMATCH

SQLITE_MISMATCH, which an INTEGER PRIMARY KEY reports for a value that is not an integer.

NOT_NULL

SQLITE_CONSTRAINT_NOTNULL.

PRIMARY_KEY

SQLITE_CONSTRAINT_PRIMARYKEY.

ROWID

SQLITE_CONSTRAINT_ROWID.

TRIGGER

SQLITE_CONSTRAINT_TRIGGER, which RAISE() reports.

UNIQUE

SQLITE_CONSTRAINT_UNIQUE.