Call stored procedure with user-defined table type as parameter; error: column name or number of supplied values does not match table definition

Question

我尝试了几种方法来完成这项工作，但在调用 ExecuteReader 时出现相同的错误：

Column name or number of supplied values does not match table definition

看起来 table 类型的列名称未与数据 table 列名称映射，但不确定原因。以下是 .net 和 SQL 代码，它适用于其他编写博客和制作视频的人，我从中获得了这段代码，但不幸的是，它对我不起作用。如果您发现任何错误或我遗漏了什么，请回复。

谢谢。

.网络代码：

var dt = new DataTable();
dt.Columns.Add(new DataColumn("DataColumnName",typeof(string)));
       
foreach(var item in request.ControlValues)
{
    var dataRow = dt.NewRow();
    dataRow["DataColumnName"] = item.DataColumnName;                        
    dt.Rows.Add(dataRow);
}

SqlConnection conn = new SqlConnection(ConnectionString);

SqlCommand cmd = new SqlCommand("[dbo].[GetQuoteSearchData]", conn);
cmd.CommandType = CommandType.StoredProcedure;

SqlParameter cob = cmd.Parameters.AddWithValue("@cob", request.Cob);
cob.SqlDbType = SqlDbType.VarChar;
cob.Direction = ParameterDirection.Input;

SqlParameter function = cmd.Parameters.AddWithValue("@function", request.Function);
function.SqlDbType = SqlDbType.VarChar;
function.Direction = ParameterDirection.Input;

SqlParameter searchColumnName = cmd.Parameters.AddWithValue("@searchColumnName", Helper.GetControlSearchColumnName(request.SearchType));
searchColumnName.SqlDbType = SqlDbType.VarChar;
searchColumnName.Direction = ParameterDirection.Input;

SqlParameter controlValues = cmd.Parameters.AddWithValue("@controlValues", dt);
controlValues.Direction = ParameterDirection.Input;
controlValues.SqlDbType = SqlDbType.Structured;
controlValues.TypeName = "[dbo].[ControlValuesTable]";

conn.Open();

SqlDataReader reader = cmd.ExecuteReader();

SQL 服务器/存储过程代码：

CREATE PROCEDURE [dbo].[GetQuoteSearchData]
    @cob nvarchar(50),
    @function nvarchar(50),
    @searchColumnName nvarchar(50),
    @controlValues as [dbo].[ControlValuesTable] READONLY
AS
BEGIN
END

用户自定义table类型：

CREATE TYPE dbo.ControlValuesTable AS 
    TABLE
    (
        DataColumnName varchar(100) 
    );
GO

Answer 1

这是您的代码的简化版本（已更改，因此它可以运行独立）：

        string ConnectionString = "cs"; // set your connection string here

        var dt = new DataTable();
        dt.Columns.Add(new DataColumn("DataColumnName", typeof(string)));

        var dataRow = dt.NewRow();
        dataRow["DataColumnName"] = "col1";
        dt.Rows.Add(dataRow);

        using (SqlConnection conn = new SqlConnection(ConnectionString))
        {
            SqlCommand cmd = new SqlCommand("[dbo].[GetQuoteSearchData]", conn);
            cmd.CommandType = CommandType.StoredProcedure;

            SqlParameter cob = cmd.Parameters.AddWithValue("@cob", "aa");
            cob.SqlDbType = SqlDbType.VarChar;
            cob.Direction = ParameterDirection.Input;

            SqlParameter function = cmd.Parameters.AddWithValue("@function", "bb");
            function.SqlDbType = SqlDbType.VarChar;
            function.Direction = ParameterDirection.Input;

            SqlParameter searchColumnName = cmd.Parameters.AddWithValue("@searchColumnName", "cc");
            searchColumnName.SqlDbType = SqlDbType.VarChar;
            searchColumnName.Direction = ParameterDirection.Input;

            SqlParameter controlValues = cmd.Parameters.AddWithValue("@controlValues", dt);
            controlValues.Direction = ParameterDirection.Input;
            controlValues.SqlDbType = SqlDbType.Structured;
            controlValues.TypeName = "[dbo].[ControlValuesTable]";

            conn.Open();

            SqlDataReader reader = cmd.ExecuteReader();

            conn.Close();
        }

我还在你的存储过程的正文中添加了一行，因为你发布的存储过程会给出如下错误：

Incorrect syntax near 'END'.

没有它。

drop proc [dbo].[GetQuoteSearchData]
GO
drop type dbo.ControlValuesTable
GO
CREATE TYPE dbo.ControlValuesTable AS 
    TABLE
    (
        DataColumnName varchar(100) 
    );
GO

CREATE PROCEDURE [dbo].[GetQuoteSearchData]
    @cob nvarchar(50),
    @function nvarchar(50),
    @searchColumnName nvarchar(50),
    @controlValues as [dbo].[ControlValuesTable] READONLY
AS
BEGIN
 select * from @controlValues
END
GO

这运行在我的系统上没问题。如果您仍然无法让它工作，请执行 sql 探查器跟踪以捕获发送到 Sqlserver 的原始 sql 请求，并尝试在 SSMS 中重播该请求。
例如请求跟踪应该类似于：

declare @p4 dbo.ControlValuesTable
insert into @p4 values(N'col1')

exec [dbo].[GetQuoteSearchData] @cob='aa',@function='bb',@searchColumnName='cc',@controlValues=@p4

在 SSMS 中重播时 returns 一行。

作为旁注，我认为您也应该能够删除这一行：

controlValues.TypeName = "[dbo].[ControlValuesTable]";

因为当 CommandType = CommandType.StoredProcedure.

时不需要

Call stored procedure with user-defined table type as parameter; error: column name or number of supplied values does not match table definition

Call stored procedure with user-defined table type as parameter; error: column name or number of supplied values does not match table definition

.net

sql-server

tsql

stored-procedures

ado.net