Microsoft OLE DB 2.0 Programmers Reference and Data Access SDK (Microsoft Professional Editions)
| OLE DB Programmer's Reference |
Property group: Data Source Information
Property set: DBPROPSET_DATASOURCEINFO
Type: VT_I4
Typical R/W: R
Description: Alter Column Support
Comprises a bitmask describing which portions of the DBCOLUMNDESC structure can be used in a call to IAlterTable::AlterColumn.
Value is a combination of one or more of the following:
- DBCOLUMNDESCFLAGS_TYPENAME
- DBCOLUMNDESCFLAGS_ITYPEINFO
- DBCOLUMNDESCFLAGS_PROPERTIES
- DBCOLUMNDESCFLAGS_CLSID
- DBCOLUMNDESCFLAGS_COLSIZE
- DBCOLUMNDESCFLAGS_DBCID
- DBCOLUMNDESCFLAGS_WTYPE
- DBCOLUMNDESCFLAGS_PRECISION
- DBCOLUMNDESCFLAGS_SCALE
For more information about the mapping of these values to fields in the DBCOLUMNDESC structure, see the description of the dwColumnDescFlags parameter in the reference entry for IAlterTable::AlterColumn.
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