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MySQL ช่วยเขียนคำสั่ง SQL ตามโจทย์ ให้หน่อยครับ /อ่อนด้านนี้มากครับ รบกวนผู้รู้หน่อย |
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1. ใช้ HAVING
2. ใช้ DELETE และ WHERE
3. ใช้ LIMIT และ WHERE
4. ใช้ ALTER TABLE
5. ใช้ TIMESTAMP
SQL Tutorial : สอน SQL
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Date :
2015-04-17 11:58:32 |
By :
mr.win |
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2.1 SELECT name,surname
FROM customer
GROUP BY name,surname
HAVING count(name)>1
2.2 DELETE FROM customer
WHERE email AND mobile IS NOT NULL
2.3 SELECT name
FROM customer
WHERE name LIKE 'A[7]%'
2.4 ALTER TABLE customer add unique(name)(suranme)
2.5
ผมลองทำแบบนี้ครับ ไม่รู้ถูกมั้ย ขอความกรุณาผู้รู้อีกทีครับ
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Date :
2015-04-17 16:35:50 |
By :
sulaiman |
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ลองเขียนแล้วลองรันดูครับ จะได้รู้ว่าได้ไหม
ถ้าได้ก็จะมี result ออกมาให้เห็น
ถ้าไม่ได้ก็จะมี error ออกมาให้ แก้ไขเปล่ยนแปลง
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Date :
2015-04-17 21:14:12 |
By :
Chaidhanan |
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Load balance : Server 03
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