mistercrunch commented on issue #8699: [SIP-29] Add support for row-level 
security
URL: 
https://github.com/apache/incubator-superset/pull/8699#issuecomment-561868273
 
 
   Yesterday I went straight to the code and missed much of the conversation 
and comments here. I think quickly things become better handled based on data 
over metadata. By that I mean if there are complex rules over which sales rep 
can see which regions, or even just if there's a high-ish cardinality of rules 
(say over 10), things are best represented as a subquery based on local data.
   
   That's easily expressed as something like `region IN (SELECT region FROM 
rules_table WHERE user_id = {{current_user.id}})`. Then a single rule will do 
and it becomes about managing the `rules_table`.
   
   I'm not against a more structured format as in (field, operator, value), as 
long as value is templatable and operator has a subquery option. It does seem 
logic to go logical `AND` across fields and logical `OR` (or `IN`) on same 
field.

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