String Describe Type Attribute StringDescribeType (SDT) Purpose Specifies whether all string columns are described as SQL_VARCHAR. This connection option This affects SQL_Columns, SQLDescribeCol, SQLColAttributes, etc. It does not affect SQLGetTypeInfo. Valid Values -10 | -9 | -1 | 12 Behavior If set to -10 -(SQL_WLONGVARCHAR), all strings are described as SQL_WLONGVARCHAR If set to -9 -(SQL_WVARCHAR), all string columns are described as SQL_WVARCHAR. If set to -1 -(SQL_LONGVARCHAR), all string columns are described as SQL_LONGVARCHAR. If set to 12 -( SQL_VARCHAR), all string columns are described as SQL_VARCHAR. Default 12 - SQL_VARCHAR GUI Tab Advanced tab