共用方式為


PROVIDER_COLUMN_ENTRY_TYPE_LENGTH

 

The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

The latest version of this topic can be found at PROVIDER_COLUMN_ENTRY_TYPE_LENGTH.

Represents a specific column supported by the provider.

Syntax

  
PROVIDER_COLUMN_ENTRY_TYPE_LENGTH(  
name  
, ordinal, dbtype, size, member )  

Parameters

name

[in] The column name.

ordinal
[in] The column number. Unless the column is a Bookmark column, the column number must not be 0.

dbtype
[in] The data type in DBTYPE.

size
[in] The column size in bytes.

member
[in] The member variable in the data class that stores the data.

Remarks

Similar to PROVIDER_COLUMN_ENTRY_LENGTH but also allows you to specify the column's data type as well as size.

Requirements

Header: atldb.h

See Also

Macros for OLE DB Provider Templates
OLE DB Provider Templates
OLE DB Provider Template Architecture
Creating an OLE DB Provider