docs: add NULL filtering section for domain representations#4662
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wolfgangwalther
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Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>
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| Domain NULL filtering | ||
| ===================== | ||
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| Domains inherit the base type's NULL semantics. | ||
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| PostgREST does not support changing ``is.null`` operator semantics on domain types. It translates directly to SQL ``IS NULL`` at query level and so the meaning of NULL cannot be changed. For more details, see this `github issue <https://github.com/PostgREST/postgrest/issues/4612>`_. | ||
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Not agreeing for now, the limitation looks bad. Perhaps there's a solution, see #4612 (comment).
steve-chavez
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Feb 24, 2026
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Closes #4612.