How to handle an invisible character in a string?

Question

Hi,
I have an interesting situation-
select bac_person_id, length(bac_person_id) from bkmap_personid_stg where BAC_PERSON_ID like '%27136317%'
The result is -
BAC_PERSON_ID|LENGTH(BAC_PERSON_ID)
27136317|     9
I don't know what is the invisible character here?
It is certainly not a blank character as trim is not working -
select * from bkmap_personid_stg where trim(BAC_PERSON_ID) = '27136317'
no records!!
But substr does give me the resullt -
select * from bkmap_personid_stg where substr(BAC_PERSON_ID,1,8) = '27136317'
How can I know which is the last character? and How to handle it?

Answer 1

girija_pathak wrote:
How can I know which is the last character? and How to handle it?You use the DUMP() function in SQL in order to see the actual content of the column.
E.g.
select DUMP(bac_person_id) from bkmap_personid_stg where bac_person_id like '%27136317%'
The decimal character values will be displayed - enabling you to see where and what control characters characters exist in the string value for that column.