How come MySQL does not support window function, specifically lag in dataflows?

Hi,

 

I am currently building a dataflow and trying to get the best out of both sql dialect. I use Mysql to order my data (because redshift doesnt order properly) and then use another datflow in the redshift dialect to be able to use window function. What I am curious about is to know why Mysql does not support window function, specifically lag in dataflows? I have been googling and it seems that you are suppose to be able to use window functions with mysql: https://dev.mysql.com/doc/refman/8.0/en/window-function-descriptions.html

but why is it not possible in Domo?

 

Thank you

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