You can test your SQL skills with W3Schools' 练习.
We have gathered a variety of SQL exercises (with answers) for each SQL Chapter.
Try to solve an exercise by filling in the missing parts of a code. If you're stuck, hit the "Show Answer" button to see what you've done wrong.
每答对一题， each correct answer. Your score and total score will always be displayed.
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If you don't know SQL, we suggest that you read our SQL Tutorial from scratch.
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