- 2 table schemas A(a1, a2, ..., an) and B(b1, b2, ..., bk)
- Table A has a primary key on 2 columns: A(a1, a2)
- the following query:
FROM A JOIN B ON a1=b1 and a2=b2
After the primary key is changed to A(a1, a3), the query performance could drop considerably.
SAP IQ 16.0
"unique HG" ; HG(U) ; pkey ; , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed
About this pageThis is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP ONE Support launchpad (Login required).
Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.