Hi, I was wondering if this was possible. I'm trying to partition a table, which is straightforward enough thanks to the great documentation, but i have a question:

If I partition using something like a product_id for example and have check constraints such as (id>=1000 and id<2000) then everything is fine and the planner correctly uses the right subset of the tables. However I would like to partition by the first letter and using something like this substr(word,1,1)='a' is ignored by the planner. From reading the docs I understand that complicated check constraints are ignored, but this doesn't seem overly complicated.

Am i doing  something wrong or is there another better way to do this

Thanks

John

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