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Removing a Column from a SQL Server Table

  • Άρθρο

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)

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The OLE DB Driver for SQL Server exposes the ITableDefinition::DropColumn function. This allows consumers to remove a column from a SQL Server table.

Consumers specify the table name as a Unicode character string in the pwszNamemember of the uName union in the pTableID parameter. The eKindmember of pTableID must be DBKIND_NAME.

The consumer indicates a column name in the pwszNamemember of the uName union in the pColumnID parameter. The column name is a Unicode character string. The eKind member of pColumnID must be DBKIND_NAME.

Example

Code

DBID TableID;  
DBID ColumnID;  
HRESULT hr;  
  
TableID.eKind = DBKIND_NAME;  
TableID.uName.pwszName = L"MyTableName";  
  
ColumnID.eKind = DBKIND_NAME;  
ColumnID.uName.pwszName = L"MyColumnName";  
  
hr = m_pITableDefinition->DropColumn(&TableID, &ColumnID);

See Also

Tables and Indexes