我想要一些SQL语法来检查值是否与它下面的值不同

SELECT column_name
FROM table_name
WHERE column_name != next_value;

SELECT column_name
FROM table_name
WHERE column_name <> (
    SELECT column_name
    FROM table_name
    WHERE primary_key = current_primary_key + 1
);

SELECT column_name
FROM (
    SELECT column_name, LAG(column_name) OVER (ORDER BY primary_key) AS prev_value
    FROM table_name
) AS subquery
WHERE column_name <> prev_value;