fix: Prevent NPE in 'ou' ownership export [DHIS2-15467] #14328
Merged
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This PR fixes an NPE that happens when the table
programownershiphistory
contains rows with nullorganisationunitid
.Two preventions were added: one at querying time, so we avoid rows without
organisationunitid
, and another at the code level.A small change was also applied: in the SQL function
exists
I gave preference toselect 1
, as null is also evaluated totrue
. It's just another preventive change.