DBPROP_ALTERCOLUMN

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.