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show me some easy tricks for SQL

this is very hard for me.. I don't learn any single thing from here..

9th Nov 2016, 8:22 PM
amit
4 Respostas
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so what should be made better?
9th Nov 2016, 8:25 PM
jmey
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please explain about this thing.. how I can do this?
9th Nov 2016, 8:27 PM
amit
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where is this topic "...easy Tricks for SQL" in the course? ... so i don't know what you want to explain
9th Nov 2016, 8:34 PM
jmey
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theres no trick in sql...
11th Nov 2016, 12:03 PM
Arun Bhandari
Arun Bhandari - avatar