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SAP Adaptive Server Enterprise

Changes to Scope and Semantics of Session-level Optmization Settings in ASE 15.0.2

'Optimization goals' are a central concept of the query processing engine in ASE 15, as they control the possible query plans that the query optimizer may consider for a query. Therefore, the choice of optimization goal can make a major difference for the performance of a query. The scope and semantics of specifying session-level settings for optimization goals (as well as for the underlying 'optimization criteria') have undergone some changes in ASE versions 15.0.2, as described in this document. (insert blank line) This document was originally published at in 2008.

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