MYSQL: select from table where a string in a column matches?

Question

I'm trying to select from a table where a column which has a string in it matches some criteria.

the normal way without the string scenario is like this:

SELECT * FROM tablename HWERE columnName='something'

but lets say the columnName contains a value like this:

1,2,3,4 | someemail@yahoo.com

and we want to select from the table where the columnName contains the someemail@yahoo.com . So, how would i need to go about this?

I tried something like this but I'm 100% sure I'm doing it wrong:

SELECT SUBSTRING_INDEX(columnName,' | ',-1) from tableName

because I don't see how the WHERE clause come in that statement!

Could someone please advise on this issue?

Answer 1

您需要使用LIKE

SELECT * FROM tablename WHERE columnName LIKE '%someemail@yahoo.com%'

Answer 2

使用LIKE

SELECT * FROM tablename WHERE columnName LIKE '%someemail@yahoo.com%';