CRM-14834 - fix activity export when relationship in export fields #11526
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Overview
Per JIRA activity export fails if a relationship field is selected
Before
Fatal error when exporting activities from advanced search with a relationship field selected - per screenshot.
![screenshot 2018-01-16 12 35 37](https://user-images.githubusercontent.com/336308/34967065-008ed650-fac5-11e7-9f9e-14ff2f0e468c.png)
After
Export succeeds
Technical Details
Error was a really dumb bit of code - re-using the variable $query for a temp sql string.
Comments
I was able to replicate it in a unit test