Basic database operation(5)

Fuzzy query
1. Placeholder
1. (_: A single arbitrary character)
2. (%: multiple arbitrary characters)
Example: query the person surnamed Ma in the student table
select * from student where name like 'Ma%';
Example: query the person whose name is Chinese
select * from student where name like '_华%＇;
Example: query people whose names are three names
select * from student where name like' ___＇; (three underscores in quotation marks)
Example: query people whose names contain horses
select * from student where name like '%马%＇;