This is an interview question, the content of the question is like this.
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.
A java developer like programing and writing. Hope my blog can help you.
Welcome to leave comments.
Java maven thrift example
JdbcTemplate query examples
Get Kth From End
Make a request with Apache HttpClient
git refname refs heads master not found
Mybatis generator maven example
Java determine thread pool size
Execute multiple commands by redis-cli
Linux combine files into one
Insertion Sort List
Update null or not exist field in MongoDB
Spring Boot interceptor example
Spring MongoTemplate example
MongoDB enable auth
MyBatis pagination example
Java8 stream collect list to map in order
Encoding(garbled) problem in SpringMVC tomcat