Here's an interview question about SQL. To solve this problem, we need to use group by and the case function. The table structure is as follows.
I encountered this error while creating a repository on Github.
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Articles about how to use Intellij IDEA effectively
In addition to deleting IDEA in your application, you also need to delete a few directories
I want to use ll command in my MacBook. I try to add .bashrc file in my MacBook and its content is like following.
Today I found software that can correct my English article. Its name is YouDao dictionary. I am very happy to use it. Next time I can write about anything I like without worrying that there are some grammar errors in my article. So the next question is how to improve my vocabulary. Reading books is a good way to improve my vocabulary. I need to read many English books. What kind of English books do I need to read?