SAP Knowledge Base Article - Preview

2985430 - SQL optimization and index usage

Symptom

A query has a WHERE clause and therefore, ADS creates automatically an Advantage Optimized Filter (AOF). However, ADS does not use existing indexes for optimizing that AOF.

The warning message is:

Restriction is not fully optimized. 
Unoptimized Part: REFERENCE="1234.12.12"

But there are two indexes, IDX_ALT_REF and primary key, that could be used.


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Environment

SAP Advantage Database Server 12

Product

SAP Advantage Database Server 11.1 ; SAP Advantage Database Server 12.0

Keywords

KBA , BC-SYB-ADS , ADS (Advantage Database Server) , Problem

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