徐小玉的博客。
发布时间：2020-12-10 14:19:04
sh-3.2# mysql -u root -psh: mysql: command not found： sh-3.2# cd ~ //进入根目录sh-3.2# pwd/var/rootsh-3.2# ls -a .bash*。//看一看.bash_file文件在不在。不在就建一个。.bash_history.bash_profilesh-3.2# more .bash_profilePATH=$PATH:/usr.........【阅读全文】
发布时间：2020-10-30 16:18:15
SELECT,, shop s1 price( (.)FROMWHERE.=.)ORDERBY;. Other possibilities for solving the problem are to use an uncorrelated subquery in the FROM, or a common table expression with a window function. SELECT.,,.FROMJOIN(SELECT,MAXprice price shop article s2 s1article s2article s1price .........【阅读全文】
发布时间：2020-10-29 16:21:12
Task: Find the number, dealer, and price of the most expensive article.SELECT,,FROMWHERE=SELECTMAXprice shop;Other solutions are to use a LEFT JOIN or to sort all rows descending by price and get only the first row using the MySQL-specific LIMIT clause: s1article s1deal.........【阅读全文】
