Specifies whether all string columns are described as SQL_VARCHAR. This connection option 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.
