No result from SQL-Query HANA Studio

Hi,

Data have been  inserted in SBO HANA 9.0. When I make a Query in the HANA Studio I got no result by this Query:

select * from "TRAININGDB_ENGLISH"."OITM" WHERE "ItemCode" = 'PURSER'

when I change the Query to:

select * from "TRAININGDB_ENGLISH"."OITM" WHERE TRIM("ItemCode") = 'PURSER'

I got a correct result.