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.

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