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Update filter/2 docs to note limited database support #4791

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Merged
greg-rychlewski merged 2 commits into from
Sep 11, 2026
+4 −2
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Update filter/2 docs to note limited database support #4791

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55a3ec5
Document filter/2 support on SQLite 3.30+.
ColaCheng Sep 11, 2026
f177dbd
Avoid listing databases in filter/2 docs.
ColaCheng Sep 11, 2026
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3 changes: 2 additions & 1 deletion lib/ecto/query/api.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -278,7 +278,8 @@ defmodule Ecto.Query.API do

@doc """
Applies the given expression as a FILTER clause against an
aggregate. This is currently only supported by Postgres.
aggregate. Not all databases support this operation. Please
check your database documentation.

from p in Payment, select: filter(avg(p.value), p.value > 0 and p.value < 100)

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3 changes: 2 additions & 1 deletion lib/ecto/query/window_api.ex
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Expand Up @@ -160,7 +160,8 @@ defmodule Ecto.Query.WindowAPI do

@doc """
Applies the given expression as a FILTER clause against an
aggregate. This is currently only supported by Postgres.
aggregate. Not all databases support this operation. Please
check your database documentation.

from p in Post,
select: avg(p.value)
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