How to see what the string of spaces in db is


This data is queried in the database.


| isv_order_no     |


| 310790786370915        |


1 row in set (0.00 sec)


How do you know what this character is. 

1. Export to sql file by sql export.




2. Through the console of rds, query the data. Then copy it to the String variable in idea.



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