Solution : https://service.sap.com/sap/support/notes/846436 (SAP Service marketplace login required)
Key words :
ibm informix database version lower, exists subquery returns incorrect number, set environment variable no_subqf, return incorrect results, environment variable 'no_subqf', informix db server, informix error pts 161362, terms exists, versions lower, users 'informix'
Related Notes :
306037 | Important parameters when using Informix |
48269 | Informix environment variables and their effect |