SAP Knowledge Base Article - Preview

2243932 - Table scan is chosen if local variable is used as a search argument and the query performance slows down. - SAP ASE

Symptom

  • Table scan may be chosen if a local variable is used as a search argument like below.

declare @col1 int
select @col1 = 10
select * from test1 where col1 = @col1

  • As a result, the query performance slows down.

Read more...

Environment

  • SAP Adaptive Server Enterprise (ASE) 15.x
  • SAP Adaptive Server Enterprise (ASE) 16.0

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; Sybase Adaptive Server Enterprise 15.0 ; Sybase Adaptive Server Enterprise 15.5

Keywords

slow, drop, performance, local variable, tablescan, indexscan, "statement cache" , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , How To

About this page

This 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.