SAP Knowledge Base Article - Preview

2716453 - behaviour difference IQ 15.x vs. IQ 16.x with function PATINDEX and NULL values - SAP IQ

Symptom

  • Post upgrading from SAP IQ 15.x to IQ 16.x,  queries using the PATINDEX function that includes NULL values are now returning different result sets in SAP IQ 16.x as compared to when run in IQ 15.x 

  • The issue can be best described though the simplified illustration outlined in the Reproduction below.

  • The issue is only seen when the query is run on the IQ query engine side,  if run purely on the SQL Anywhere (catalog) side it is not an issue.

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Environment

  • SAP IQ 15.x on all platforms

  • SAP IQ 16.x on all platforms

Product

SAP IQ 16.0 ; SAP IQ 16.1 ; SAP Sybase IQ 15.4

Keywords

sybase, upgrade, install, error, incorrect, fail, nullable, 'missing row', query, parser, CR817337, CR#817337, 817337, 'IQ15.4', different, odd, , KBA , BC-SYB-IQ , Sybase IQ , Problem

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