https://userapps.support.sap.com/sap/support/knowledge/en/3529142
3529142 - Non-Fatal IQ internal error on temporary table FP - SAP IQ | SAP Knowledge Base Article
FP index on temporary table causing non fatal error in IQ on s_barry.cxx ** Non-Fatal IQ Internal Error Detected ** at slib/s_barray.cxx:8846 pcstkwalk...