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Simulate UNION with BLOBs

November 21, 2016Category: Software
TL;DR : If you have BLOB s, you need to use UNION ALL . If you use UNION ALL , you need to partition off a criterion and select the first row. The other day I had to figure out how UNION works in Oracle, because we're retrofitting an application with extra features. Assuming I have 2 tables…

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