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32 lines
1.0 KiB
Haskell
32 lines
1.0 KiB
Haskell
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module Hasura.Experimental.Schema.Column
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( Column (..),
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)
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where
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--------------------------------------------------------------------------------
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import Hasura.Experimental.IR.Column qualified as Column (Name)
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import Hasura.Experimental.IR.Scalar.Type qualified as Scalar (Type)
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import Hasura.Prelude
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--------------------------------------------------------------------------------
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-- | A schematic representation which captures common attributes associated
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-- with a piece of data that is stored in a given backend.
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--
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-- These attributes ascribe meaningful semantics to the data that they are
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-- associated with.
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--
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-- cf. https://en.wikipedia.org/wiki/Column_(database)
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-- https://www.postgresql.org/docs/13/ddl-basics.html
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--
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-- NOTE(cdparks): Instead of an isNullable flag, should we instead
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-- add a Nullable constructor to Scalar.Type?
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data Column = Column
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{ name :: Column.Name,
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type_ :: Scalar.Type,
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isNullable :: Bool,
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description :: Maybe Text
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}
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deriving stock (Data, Eq, Generic, Ord, Show)
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