pub const blob: ColumnType(BitArray, Value)
pub const blob_nullable: ColumnType(Option(BitArray), Value)
pub const bool: ColumnType(Bool, Value)
pub const bool_nullable: ColumnType(Option(Bool), Value)
pub const integer: ColumnType(Int, Value)
pub const integer_nullable: ColumnType(Option(Int), Value)
pub const real: ColumnType(Float, Value)
pub const real_nullable: ColumnType(Option(Float), Value)
pub const text: ColumnType(String, Value)
pub const text_nullable: ColumnType(Option(String), Value)