HANA SUBSTRING function inconsistent with teiid behaviour --------------------------------------------------------- Key: TEIID-3805 URL: https://issues.jboss.org/browse/TEIID-3805 Project: Teiid Issue Type: Bug Components: Misc. Connectors Affects Versions: 8.7.1.6_2 Reporter: Jan Stastny Assignee: Steven Hawkins When querying HANA using hana translator, there is an inconsistency in handling SUBSTRING with similar parameters: {code:sql} SELECT SUBSTRING('sth',20,1) FROM tablename {code} That is, when the starting offset supplied to SUBSTRING function is greater than the length of the string value, Teiid returns NULL in this case. But when I run: {code:sql} SELECT SUBSTRING(STRINGNUM,20,1) FROM bqt1.smalla {code} (it is pushed to HANA and STRINGNUM column contains strings of length <=2) I get empty strings instead of NULL values, which is default in Teiid. This inconsistency is caused by different handling of such situation on HANA's side.