在SQL中，可以使用百分比函數與其他函數結合使用，例如：
SELECT COUNT(*) AS total_rows,
COUNT(*) * 100.0 / (SELECT COUNT(*) FROM table_name) AS percentage
FROM table_name;
SELECT SUM(column_name) AS total_sum,
SUM(column_name) * 100.0 / (SELECT SUM(column_name) FROM table_name) AS percentage
FROM table_name;
SELECT AVG(column_name) AS average_value,
AVG(column_name) * 100.0 / (SELECT AVG(column_name) FROM table_name) AS percentage
FROM table_name;
這些示例展示了如何在SQL中使用百分比函數與其他函數結合使用，以便計算百分比值。您可以根據自己的需求對這些查詢進行調整和修改。
