How to write a conditional statement to obtain the value of the maximum time in a table using a MySQL statement

The phenomenon and background of the problem

Problem related code , Do not paste screenshots

select YEAR,MONTH, YEAR||MONTH as time, from xx surface where YEAR||MONTH = to_char(current_timestamp, \'YMM\') Now it's time to get the current time I want to change this statement to get the value of the maximum time in the current table How to write statements

Operation results and error reporting contents

My solution ideas and tried methods

What I want to achieve

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Take the answer ：

select max( The time field ) from Table name

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