长度（列）大于字符，但后跟空格

Question

I have this query to show all records where column is greater than 4 characters, however, the data contains spaces after the characters for example '1234 ' .

How could I modify the below query to ignore the spaces after the characters? Querying an Oracle database.

Many thanks.

select * 
from tablename
where length(field1) > 4

Answer 1

You can use rtrim function to remove the trailing spaces.

select * 
from tablename 
where length(rtrim(field1)) > 4

Perhaps you want to check ltrim , trim functions, too.