这是一个可重复使用的变化的解决方案在马克托罗特的优秀答案。

扩展方法:

public static class ParameterExtensions
{
    public static Tuple<string, SqlParameter[]> ToParameterTuple<T>(this IEnumerable<T> values)
    {
        var createName = new Func<int, string>(index => "@value" + index.ToString());
        var paramTuples = values.Select((value, index) => 
        new Tuple<string, SqlParameter>(createName(index), new SqlParameter(createName(index), value))).ToArray();
        var inClause = string.Join(",", paramTuples.Select(t => t.Item1));
        var parameters = paramTuples.Select(t => t.Item2).ToArray();
        return new Tuple<string, SqlParameter[]>(inClause, parameters);
    }
}

用法:

        string[] tags = {"ruby", "rails", "scruffy", "rubyonrails"};
        var paramTuple = tags.ToParameterTuple();
        var cmdText = $"SELECT * FROM Tags WHERE Name IN ({paramTuple.Item1})";

        using (var cmd = new SqlCommand(cmdText))
        {
            cmd.Parameters.AddRange(paramTuple.Item2);
        }

可以将参数作为字符串传递

这是弦

DECLARE @tags

SET @tags = ‘ruby|rails|scruffy|rubyonrails’

select * from Tags 
where Name in (SELECT item from fnSplit(@tags, ‘|’))
order by Count desc

然后你所要做的就是将字符串作为1参数传递。

这是我使用的分裂函数。

CREATE FUNCTION [dbo].[fnSplit](
    @sInputList VARCHAR(8000) -- List of delimited items
  , @sDelimiter VARCHAR(8000) = ',' -- delimiter that separates items
) RETURNS @List TABLE (item VARCHAR(8000))

BEGIN
DECLARE @sItem VARCHAR(8000)
WHILE CHARINDEX(@sDelimiter,@sInputList,0) <> 0
 BEGIN
 SELECT
  @sItem=RTRIM(LTRIM(SUBSTRING(@sInputList,1,CHARINDEX(@sDelimiter,@sInputList,0)-1))),
  @sInputList=RTRIM(LTRIM(SUBSTRING(@sInputList,CHARINDEX(@sDelimiter,@sInputList,0)+LEN(@sDelimiter),LEN(@sInputList))))

 IF LEN(@sItem) > 0
  INSERT INTO @List SELECT @sItem
 END

IF LEN(@sInputList) > 0
 INSERT INTO @List SELECT @sInputList -- Put the last item in
RETURN
END

我将传递一个表类型参数(因为它是SQL Server 2008)，并做一个where exists，或内部连接。您也可以使用XML，使用sp_xml_preparedocument，然后甚至可以索引临时表。

使用动态查询。前端只生成所需的格式:

DECLARE @invalue VARCHAR(100)
SELECT @invalue = '''Bishnu'',''Gautam'''

DECLARE @dynamicSQL VARCHAR(MAX)
SELECT @dynamicSQL = 'SELECT * FROM #temp WHERE [name] IN (' + @invalue + ')'
EXEC (@dynamicSQL)

SQL小提琴

在ColdFusion中，我们只需要:

<cfset myvalues = "ruby|rails|scruffy|rubyonrails">
    <cfquery name="q">
        select * from sometable where values in <cfqueryparam value="#myvalues#" list="true">
    </cfquery>

您可以通过以下方法以可重用的方式完成此任务-

public static class SqlWhereInParamBuilder
{
    public static string BuildWhereInClause<t>(string partialClause, string paramPrefix, IEnumerable<t> parameters)
    {
        string[] parameterNames = parameters.Select(
            (paramText, paramNumber) => "@" + paramPrefix + paramNumber.ToString())
            .ToArray();

        string inClause = string.Join(",", parameterNames);
        string whereInClause = string.Format(partialClause.Trim(), inClause);

        return whereInClause;
    }

    public static void AddParamsToCommand<t>(this SqlCommand cmd, string paramPrefix, IEnumerable<t> parameters)
    {
        string[] parameterValues = parameters.Select((paramText) => paramText.ToString()).ToArray();

        string[] parameterNames = parameterValues.Select(
            (paramText, paramNumber) => "@" + paramPrefix + paramNumber.ToString()
            ).ToArray();

        for (int i = 0; i < parameterNames.Length; i++)
        {
            cmd.Parameters.AddWithValue(parameterNames[i], parameterValues[i]);
        }
    }
}

要了解更多细节，请参阅这篇博客文章-参数化SQL WHERE IN子句c#