srv_setcoldata (Extended Stored Procedure API)

重要提示：
后续版本的 Microsoft SQL Server 将删除该功能。请不要在新的开发工作中使用该功能，并尽快修改当前还在使用该功能的应用程序。 Use CLR integration instead.

Specifies the current address for a column's data.

语法

int srv_setcoldata (
SRV_PROC *
srvproc
,
int 
column
,
void *
data 
);

Arguments

• srvproc
  Is a pointer to the SRV_PROC structure that is the handle for a particular client connection. The structure contains information the Extended Stored Procedure API library uses to manage communication and data between the application and the client.

• column
  Indicates the number of the column the address is being specified for. Columns are numbered beginning with 1.

• data
  Is a pointer for a column's data. Memory allocated for data should not be freed until the column data is replaced by another call to srv_setcoldata, or until srv_senddone is called.

Returns

SUCCEED or FAIL.

备注

Each column of the row must be defined first with srv_describe. Column data addresses are initially set with srv_describe. If the address of the column data changes, srv_setcoldata must be called to specify the new address of the data and srv_setcoldata must be called separately for each changed column.

Null data is represented by setting the column's length to 0 with srv_setcollen. The data address is then ignored.

安全说明：
You should thoroughly review the source code of extended stored procedures, and you should test the compiled DLLs before you install them on a production server. For information about security review and testing, see this Microsoft Web site.

请参阅

参考

srv_describe (Extended Stored Procedure API)

帮助和信息

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