Valor de verificación de restricción SQL en la lista
ALTER TABLE <table>
ADD CONSTRAINT chk_val CHECK (col in ('yes','no','maybe'))
Breakable Barracuda
ALTER TABLE <table>
ADD CONSTRAINT chk_val CHECK (col in ('yes','no','maybe'))CREATE TABLE test(
_id BIGINT PRIMARY KEY NOT NULL,
decision NVARCHAR(5),
CHECK (decision in ('yes','no','maybe'))
);