For all column attribute information retrieved using SQLColAttribute, the old driver returns values that vary based on the data. In the new driver, the following column attributes are based on another attribute or hard-coded to a specific value:
- SQL_DESC_DATETIME_INTERVAL_PRECISION
For all column types, in the new driver, SQL_DESC_DATETIME_INTERVAL_PRECISION = SQL_DESC_PRECISION.
- SQL_DESC_PRECISION
For all column types except for NUMERIC and DECIMAL, in the new driver, SQL_DESC_PRECISION = SQL_DESC_LENGTH.
Additionally, the following table lists by column type the column attributes the new Teradata ODBC Driver returns.
| Column Type | Column Attributes Returned by New Driver |
|---|---|
| BIGINT | Octet length is 20. |
| DATE | Display size is returned as a number of characters. |
| DOUBLE, FLOAT, or REAL | Display size is 24. |
| Interval types |
|
| JSON | Octet length is SQL_DESC_LENGTH * character size. |
| TIME | Display size is returned as a number of characters. |
| TIMESTAMP | Display size is returned as a number of characters. |