Select specific words

Question

How can I only select rows that contains column-Grade value like Grade 1, Grade 10, Grade 11, Grade 12... from the table?

Answer 1

尝试这样的想法：

SELECT *
FROM t
WHERE Grade LIKE 'Grade 1%'

Answer 2

Get the grade column value vertically like below

SELECT SUBSTRING_INDEX(Grade,'-',1) FROM table_name

and then after convert them to rows

Answer 3

嘿，你可以这样试试

select * from tableName where SUBSTRING_INDEX(Grade,'-',1) = 'Grade 1';