如何将数组传递到SQL Server存储过程

如何将数组传递到SQL Server存储过程?

例如，我有一个员工列表。我想使用这个列表作为一个表，并将它与另一个表连接。但是员工列表应该作为参数从c#传递。

当前回答

如上所述，一种方法是将数组转换为字符串，然后在SQL Server中拆分字符串。

在SQL Server 2016，有一个内置的方法来分割字符串称为

STRING_SPLIT ()

它返回一组可以插入临时表(或实际表)的行。

DECLARE @str varchar(200)
SET @str = "123;456;789;246;22;33;44;55;66"
SELECT value FROM STRING_SPLIT(@str, ';')

会产生:

如果你想变得更花哨:

DECLARE @tt TABLE (
    thenumber int
)
DECLARE @str varchar(200)
SET @str = "123;456;789;246;22;33;44;55;66"

INSERT INTO @tt
SELECT value FROM STRING_SPLIT(@str, ';')

SELECT * FROM @tt
ORDER BY thenumber

会得到与上面相同的结果(除了列名是“number”)，但是排序了。您可以像使用其他表一样使用table变量，因此如果您愿意，可以轻松地将它与DB中的其他表连接起来。

请注意，您的SQL Server安装必须在兼容级别130或更高，以便STRING_SPLIT()函数被识别。您可以通过以下查询检查您的兼容性级别:

SELECT compatibility_level
FROM sys.databases WHERE name = 'yourdatabasename';

大多数语言(包括c#)都有一个“join”函数，可以用来从数组中创建字符串。

int[] myarray = {22, 33, 44};
string sqlparam = string.Join(";", myarray);

然后将sqlparam作为参数传递给上面的存储过程。

2020-01-28 20:20:25

其他回答

您需要将其作为XML参数传递。

编辑:快速代码从我的项目给你一个想法:

CREATE PROCEDURE [dbo].[GetArrivalsReport]
    @DateTimeFrom AS DATETIME,
    @DateTimeTo AS DATETIME,
    @HostIds AS XML(xsdArrayOfULong)
AS
BEGIN
    DECLARE @hosts TABLE (HostId BIGINT)

    INSERT INTO @hosts
        SELECT arrayOfUlong.HostId.value('.','bigint') data
        FROM @HostIds.nodes('/arrayOfUlong/u') as arrayOfUlong(HostId)

然后您可以使用临时表来连接您的表。我们将arrayOfUlong定义为一个内置的XML模式，以维护数据完整性，但您不必这样做。我建议使用它，这里有一个快速代码，以确保您总是得到一个带long的XML。

IF NOT EXISTS (SELECT * FROM sys.xml_schema_collections WHERE name = 'xsdArrayOfULong')
BEGIN
    CREATE XML SCHEMA COLLECTION [dbo].[xsdArrayOfULong]
    AS N'<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:element name="arrayOfUlong">
        <xs:complexType>
            <xs:sequence>
                <xs:element maxOccurs="unbounded"
                            name="u"
                            type="xs:unsignedLong" />
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>';
END
GO

2012-06-19 13:49:37

CREATE TYPE dumyTable
AS TABLE
(
  RateCodeId int,
  RateLowerRange int,
  RateHigherRange int,
  RateRangeValue int
);
GO
CREATE PROCEDURE spInsertRateRanges
  @dt AS dumyTable READONLY
AS
BEGIN
  SET NOCOUNT ON;

  INSERT  tblRateCodeRange(RateCodeId,RateLowerRange,RateHigherRange,RateRangeValue) 
  SELECT * 
  FROM @dt 
END

2020-03-30 09:43:08

为存储过程使用表值参数。

当您从c#传递它时，您将添加数据类型为SqlDb.Structured的参数。

请看这里:http://msdn.microsoft.com/en-us/library/bb675163.aspx

例子:

// Assumes connection is an open SqlConnection object.
using (connection)
{
// Create a DataTable with the modified rows.
DataTable addedCategories =
  CategoriesDataTable.GetChanges(DataRowState.Added);

// Configure the SqlCommand and SqlParameter.
SqlCommand insertCommand = new SqlCommand(
    "usp_InsertCategories", connection);
insertCommand.CommandType = CommandType.StoredProcedure;
SqlParameter tvpParam = insertCommand.Parameters.AddWithValue(
    "@tvpNewCategories", addedCategories);
tvpParam.SqlDbType = SqlDbType.Structured;

// Execute the command.
insertCommand.ExecuteNonQuery();
}

2012-06-19 13:53:17

这对你有帮助。:)按照下面的步骤，

Open the Query Editor Copy Paste the following code as it is, it will create the Function which converts the String to Int CREATE FUNCTION dbo.SplitInts ( @List VARCHAR(MAX), @Delimiter VARCHAR(255) ) RETURNS TABLE AS RETURN ( SELECT Item = CONVERT(INT, Item) FROM ( SELECT Item = x.i.value('(./text())[1]', 'varchar(max)') FROM ( SELECT [XML] = CONVERT(XML, '<i>' + REPLACE(@List, @Delimiter, '</i><i>') + '</i>').query('.') ) AS a CROSS APPLY [XML].nodes('i') AS x(i) ) AS y WHERE Item IS NOT NULL ); GO Create the Following stored procedure CREATE PROCEDURE dbo.sp_DeleteMultipleId @List VARCHAR(MAX) AS BEGIN SET NOCOUNT ON; DELETE FROM TableName WHERE Id IN( SELECT Id = Item FROM dbo.SplitInts(@List, ',')); END GO Execute this SP Using exec sp_DeleteId '1,2,3,12' this is a string of Id's which you want to delete, You can convert your array to string in C# and pass it as a Stored Procedure parameter as below, int[] intarray = { 1, 2, 3, 4, 5 }; string[] result = intarray.Select(x=>x.ToString()).ToArray(); SqlCommand command = new SqlCommand(); command.Connection = connection; command.CommandText = "sp_DeleteMultipleId"; command.CommandType = CommandType.StoredProcedure; command.Parameters.Add("@Id",SqlDbType.VARCHAR).Value=result ;

这将在单个存储的proc调用中删除多个行。愿一切都好！

2014-12-20 11:46:05