你能限制(数据库)表中的行数吗？

```

CREATE TRIGGER limit_rows_trigger

BEFORE INSERT ON your_table

FOR EACH ROW

BEGIN

    DECLARE row_count INT;

    SELECT COUNT(*) INTO row_count FROM your_table;

    IF row_count >= your_limit THEN

        SIGNAL SQLSTATE '45000'

        SET MESSAGE_TEXT = 'Table row limit exceeded';

    END IF;

END;

```

```

CREATE PROCEDURE insert_with_row_limit(IN your_data ...)

BEGIN

    DECLARE row_count INT;

    SELECT COUNT(*) INTO row_count FROM your_table;

    IF row_count< your_limit THEN

        INSERT INTO your_table (column1, column2, ...) VALUES (your_data);

    ELSE

        -- Handle row limit exceeded

    END IF;

END;

```

```

ALTER TABLE your_table

ADD CONSTRAINT chk_row_limit CHECK (

    (SELECT COUNT(*) FROM your_table)< your_limit

);

```