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

   esqueleto	Database.Esqueleto.Experimental.ToMaybe

   No documentation available.

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

   esqueleto	Database.Esqueleto.Internal.Internal

   No documentation available.

3. 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.

4. 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.

5. 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).

6. toBaseIdMaybe :: ToBaseId ent => SqlExpr (Value (Maybe (Key ent))) -> SqlExpr (Value (Maybe (Key (BaseEnt ent))))

   esqueleto	Database.Esqueleto.Internal.Internal

   Like toBaseId, but works on Maybe keys.

7. ByMaybeAttr :: WhyNullable

   esqueleto	Database.Esqueleto.Legacy

   No documentation available.

8. FieldAttrMaybe :: FieldAttr

   esqueleto	Database.Esqueleto.Legacy

   The Maybe keyword goes after the type. This indicates that the column is nullable, and the generated Haskell code will have a Maybe type for it. Example:

   User
   name Text Maybe
   

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

   esqueleto	Database.Esqueleto.Legacy

   As fromBaseId, but works on Maybe keys.

10. isFieldMaybe :: FieldDef -> Bool

    esqueleto	Database.Esqueleto.Legacy

    Check if the field is `Maybe a`

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