Remove Table Expr b constraint from materialize
#334
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Not only is this not necessary, it can actually act as a barrier to optimisation. The reason I added it was because it seemed like a cheap way to stop someone writing `query' <- materialize query id` — if you return the materialized query from `materialized`, it won't work. Really we would need some sort of `runST` type trick here to do this properly, but that would be too invasive a change.
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Did you consider keeping the constraint but just removing the |
abigailalice
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Not only is this not necessary, it can actually act as a barrier to optimisation. The reason I added it was because it seemed like a cheap way to stop someone writing `query' <- materialize query id` — if you return the materialized query from `materialized`, it won't work. Really we would need some sort of `runST` type trick here to do this properly, but that would be too invasive a change.
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Not only is this not necessary, it can actually act as a barrier to optimisation. The reason I added it was because it seemed like a cheap way to stop someone writing
query' <- materialize query id— if you return the materialized query frommaterialized, it won't work. Really we would need some sort ofrunSTtype trick here to do this properly, but that would be too invasive a change.