Pass List of strings to a stored procedure [duplicate]

问题

Using, SQL Server 2012, I would like to create a stored procedure, that passes in a list of string and checks it for each entry.Iv added the list to one comma separated string 'UserGroupsAllowedToViewMap'. This was working for one entry but I need to check it for a number of entries.

public DataTable GetMapsWithWorkspaceForUserGroups(int workspaceID, string UserGroupsAllowedToViewMap)
{
        DataTable mapDets = new DataTable();

        SqlCommand oComm = new SqlCommand();
        SqlParameter spParam_WrkSpaceId = new SqlParameter();
        SqlParameter spParam_ViewMap = new SqlParameter();
        SqlParameter[] spParams = new SqlParameter[2];

        SqlDataAdapter daUserMaps = new SqlDataAdapter();
        try
        {
            spParam_WrkSpaceId.ParameterName = "@workspaceID";
            spParam_WrkSpaceId.Value = workspaceID;
            spParams[0] = spParam_WrkSpaceId;

            spParam_ViewMap.ParameterName = "@ViewMap";
            spParam_ViewMap.Value = UserGroupsAllowedToViewMap;
            spParams[1] = spParam_ViewMap;

            oComm = CreateCommand("GetWorkspaceMapDetailsForUserByGroups", spParams, TypeOfConnectionString.GeoAppBuilder);
            daUserMaps.SelectCommand = oComm;
            daUserMaps.Fill(mapDets);
        }
        catch (Exception e)
        {
            throw (e);
        }
        finally
        {
            CloseConnection();
        }

        return mapDets;
}




  USE [App]
GO
/****** Object:  StoredProcedure [dbo].[GetWorkspaceMapDetailsForUserByGroups]    Script Date: 16/02/2015 10:37:46 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[GetWorkspaceMapDetailsForUserByGroups]   
    @workspaceID int,
    @viewMap nvarchar(256)
 AS 

SELECT 
  m.*
FROM 
  GeoAppMapDef m
WHERE
 m.workspaceID = @workspaceID
 and m.IsDeleted = 0
 and m.ViewMap = @viewMap

I am unsure how to iterate through the string in SQL. Ive looked at Passing List<> to SQL Stored Procedure and C# SQL Server - Passing a list to a stored procedure but still none the wiser. any help appreciated.

回答1:

Convert the comma seperated value to table using the XML. Use this updated procedure.

USE [App]
GO
/****** Object:  StoredProcedure [dbo].[GetWorkspaceMapDetailsForUserByGroups]    
     Script Date: 16/02/2015 10:37:46 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[GetWorkspaceMapDetailsForUserByGroups]   
    @workspaceID int,
    @viewMap nvarchar(256)
 AS 

SELECT 
  m.*
FROM 
  GeoAppMapDef m
WHERE
 m.workspaceID = @workspaceID
 and m.IsDeleted = 0
 and m.ViewMap IN 
 (
  SELECT 
     Split.a.value('.', 'VARCHAR(100)') AS CVS  
  FROM  
  (
    SELECT CAST ('<M>' + REPLACE(@viewMap, ',', '</M><M>') + '</M>' AS XML) AS CVS 
  ) AS A CROSS APPLY CVS.nodes ('/M') AS Split(a)
)

回答2:

This is really a duplicate of the links you posted. Instead of trying to parse a list of values, pass a table-valued parameter.

First create the parameter's type in the database (only once).

CREATE TYPE [dbo].[IdList] AS TABLE(
    [Id] int NULL
);

Then create a procedure that accepts this parameter:

CREATE PROCEDURE [dbo].[GetWorkspaceMapDetailsForUserByGroups]
    @workspaceID int,
    @groupIds IdList READONLY
AS
BEGIN
SELECT 
  m.*
FROM GeoAppMapDef m 
    inner join @groupIds on m.ViewMap=@groupIds.Id
WHERE
    m.workspaceID = @workspaceID
    and m.IsDeleted = 0
END

On the client's side, create a DataTable with a single int-typed column called Id, fill it with the IDs you want then use it as the value of the @groupIds parameter

var table = new DataTable();
table.Columns.Add("Id", typeof(int));

for (int i = 0; i < 10; i++)
    table.Rows.Add(i);

var pList = new SqlParameter("@groupIds", SqlDbType.Structured);
pList.TypeName = "dbo.IdList";
pList.Value = table;

I've copied this from the duplicate question with a few modifications.

来源：https://stackoverflow.com/questions/28541079/pass-list-of-strings-to-a-stored-procedure

标签

sql

stored-procedures

sql-server-2012