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GetColumnSQLVARIANTToString Method

未來的 Microsoft SQL Server 版本將移除這項功能。請避免在新的開發工作中使用這項功能，並規劃修改目前使用這項功能的應用程式。

The GetColumnSQLVARIANTToString method converts a sql_variant column to a string and returns its value.

語法

object.GetColumnSQLVARIANTToString( Row, Column, ObjName)as String

Parts

  • object
    Expression that evaluates to an object in the Applies To list.

  • Row
    Long integer that identifies a row by ordinal position.

  • Column
    Long integer that identifies a column by ordinal position.

  • ObjName
    String that specifies a table or view name.

Prototype (C/C++)

HRESULT GetColumnSQLVARIANTToString(
long lRow, 
long lColumn, 
SQLDMO_LPCSTR ObjName, 
SQLDMO_LPBSTR pRetVal);

[!附註]

SQL Distributed Management Objects (SQL-DMO) strings are always returned as OLE BSTR objects. A C/C++ application obtains a reference to the string. The application must release the reference using SysFreeString.

備註

GetColumnSQLVARIANTToString can be useful in applications designed to display the contents of sql_variant columns, such as a Web site.

Columns with underlying numeric, decimal, or datetime data types cannot be converted to strings using the GetColumnSQLVARIANTToString method.

[!附註]

If an application calls GetColumnSQLVARIANTToString on an instance of SQL Server version 7.0, the constant, SQLDMO_E_SQL80ONLY, and the message "This property or method requires Microsoft SQL Server 2000 or later" are returned.

Applies To:

QueryResults2 Object