Length

Specify the length of the AlphaKey stored in the column. Possible values include these:

• A constant integer (for example, 8).
• table.column (for example, coparms.co_length). If a single row exists in that table with a non-NULL value in the specified column, use that value. Otherwise, use the width of the DataType of the column for which you are defining metadata.
• Not specified. Use the width of the DataType.