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2025-04-03 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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This article mainly introduces the SELECT query usage of MySQL, the contents of the article are carefully selected and edited by the author, with a certain pertinence, the reference significance for everyone is still relatively great, the following with the author to understand the SELECT query usage of MySQL.
Note:
Before the exercise, please download the file in the attachment and import it into mysql by mysql-u user-h host-p password.
< hellodb.sql 多表查询一定要多设定约束条件 SELECT查询练习 首先是连接mysql,我这里没设置密码,直接输入mysql就连接进来了。 1.先查询有哪些数据库 mysql>Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.
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