sql基礎語句1

1.SELECT store_name FROM Store_Information
2.SELECT DISTINCT store_name FROM Store_Information

3.SELECT store_name
FROM Store_Information
WHERE Sales > 1000

4.SELECT store_name
FROM Store_Information
WHERE Sales > 1000
OR (Sales < 500 AND Sales > 275)

5.SELECT *
FROM Store_Information
WHERE store_name IN (‘Los Angeles’, ‘San Diego’)

6.SELECT *
FROM Store_Information
WHERE Date BETWEEN ‘Jan-06-1999’ AND ‘Jan-10-1999’

7.SELECT *
FROM Store_Information
WHERE store_name LIKE ‘%AN%’

8.SELECT store_name, Sales, Date
FROM Store_Information
ORDER BY Sales DESC

9.SELECT store_name, Sales, Date
FROM Store_Information
ORDER BY 2 DESC

10.SELECT SUM(Sales) FROM Store_Information
【注】基本函數：
AVG (平均)
COUNT (計數)
MAX (最大值)
MIN (最小值)
SUM (總合)

11.SELECT COUNT(store_name)
FROM Store_Information
WHERE store_name is not NULL

12.SELECT COUNT(DISTINCT store_name)
FROM Store_Information

13.SELECT store_name, SUM(Sales)
FROM Store_Information
GROUP BY store_name

14.SELECT store_name, SUM(sales)
FROM Store_Information
GROUP BY store_name
HAVING SUM(sales) > 1500