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  1. toMaybe :: ToMaybe a => a -> ToMaybeT a

    esqueleto Database.Esqueleto.Experimental

    No documentation available.

  2. getTableMaybe :: GetFirstTable (SqlExpr (Maybe (Entity t))) ts => ts -> SqlExpr (Maybe (Entity t))

    esqueleto Database.Esqueleto.Experimental.From.Join

    A variant of getTable that operates on possibly-null entities.

  3. module Database.Esqueleto.Experimental.ToMaybe

    No documentation available.

  4. class ToMaybe a

    esqueleto Database.Esqueleto.Experimental.ToMaybe

    No documentation available.

  5. type family ToMaybeT a

    esqueleto Database.Esqueleto.Experimental.ToMaybe

    No documentation available.

  6. toMaybe :: ToMaybe a => a -> ToMaybeT a

    esqueleto Database.Esqueleto.Experimental.ToMaybe

    No documentation available.

  7. entityAsValueMaybe :: SqlExpr (Maybe (Entity val)) -> SqlExpr (Value (Maybe (Entity val)))

    esqueleto Database.Esqueleto.Internal.Internal

    No documentation available.

  8. fromBaseIdMaybe :: ToBaseId ent => SqlExpr (Value (Maybe (Key (BaseEnt ent)))) -> SqlExpr (Value (Maybe (Key ent)))

    esqueleto Database.Esqueleto.Internal.Internal

    As fromBaseId, but works on Maybe keys.

  9. fromStartMaybe :: (PersistEntity a, BackendCompatible SqlBackend (PersistEntityBackend a)) => SqlQuery (PreprocessedFrom (SqlExpr (Maybe (Entity a))))

    esqueleto Database.Esqueleto.Internal.Internal

    (Internal) Same as fromStart, but entity may be missing.

  10. subSelectMaybe :: PersistField a => SqlQuery (SqlExpr (Value (Maybe a))) -> SqlExpr (Value (Maybe a))

    esqueleto Database.Esqueleto.Internal.Internal

    Execute a subquery SELECT in a SqlExpr. This function is a shorthand for the common joinV . subSelect idiom, where you are calling subSelect on an expression that would be Maybe already. As an example, you would use this function when calling sum_ or max_, which have Maybe in the result type (for a 0 row query).

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