Values.ColumnDefinitionSourceThe definition of a column in a tabular Dataset.
type nonrec t = {dataType : ColumnDataType.t option;Data type of a column. STRING – A String data type. CHAR – A char data type. INTEGER – An integer data type. TINYINT – A tinyint data type. SMALLINT – A smallint data type. BIGINT – A bigint data type. FLOAT – A float data type. DOUBLE – A double data type. DATE – A date data type. DATETIME – A datetime data type. BOOLEAN – A boolean data type. BINARY – A binary data type.
*)columnName : ColumnName.t option;The name of a column.
*)columnDescription : ColumnDescription.t option;Description for a column.
*)}val to_value :
t ->
[> `Structure of
(string * [> `Enum of string | `String of ColumnName.t ]) list ]