JSON_MERGE_PRESERVE with JSON_ARRAYAGG
Posted by: Luís Bessa
Date: June 21, 2018 11:53AM

Hello,

I'm trying to use JSON_ARRAYAGG to group all row json column and then have them merged by key with JSON_MERGE_PRESERVE.

It gives me this error:
Error Code: 1582. Incorrect parameter count in the call to native function 'JSON_MERGE_PRESERVE'

Shouldn't the JSON_MERGE_PRESERVE function accept an array as input ?

Thanks,
Luis

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