【数据库】通用的存储过程

通用删除表存储过程：

create PROCEDURE Sp_deletedatabyCondition 
    @tablename nvarchar(100),
    @condition nvarchar(200)
    AS
BEGIN
    DECLARE @Sql nvarchar(500)
    SET @Sql='delete from  '+@tablename+ ' where '+@condition
    EXEC(@Sql)
END
GO

通用更新存储过程：

create PROCEDURE Sp_UpdateTablebyCondition 
    @tablename nvarchar(100),
    @condition nvarchar(300),
    @columns nvarchar(500)
    AS
BEGIN
    DECLARE @sql nvarchar(1000)
    SET @sql='update  '+@tablename+' set '+@columns+' where '
    +@condition
    EXEC(@sql)
END
GO

通用查询表信息存储过程：

CREATE PROCEDURE Sp_getDataByTableName 
    -- Add the parameters for the stored procedure here
    @tablename nvarchar(100)
    AS
BEGIN
    DECLARE @sql nvarchar(500)
    SET @sql='select * from '+@tablename
    EXEC(@sql)
END
GO

通用查询表某列信息存储过程：

CREATE PROCEDURE SP_getColumnsbyTable 
    @tablename nvarchar(100),
    @columns nvarchar(500)
    
    AS
BEGIN
    DECLARE @sql nvarchar(1000)
    SET @sql='select '+@columns+' from '+ @tablename
    EXEC(@sql)
END
GO

通用查询表某列含条件存储过程：

CREATE PROCEDURE SP_getColumnsByCondition 
    @tablename nvarchar(100),
    @columns nvarchar(300),
    @condition nvarchar(200)
    
    AS
BEGIN
    DECLARE @sql nvarchar(1000)
    SET @sql='select '+@columns+' from '+@tablename+ ' where 1=1 '+@condition
    EXEC(@sql)
END
GO

 demo：

        public string tongyongtext(model.Client model)
        {
            using (SqlConnection con = getcon.getconns())
            {
                using (SqlCommand com = con.CreateCommand())
                {
                    con.Open();
                    com.CommandText = "SP_getColumnsByCondition";
                    com.CommandType = CommandType.StoredProcedure;

                    com.Parameters.Add("@tablename", SqlDbType.NVarChar);
                    com.Parameters["@tablename"].Value = "Client";

                    com.Parameters.Add("@columns", SqlDbType.NVarChar);
                    com.Parameters["@columns"].Value = "C_TwoPwd";

                    com.Parameters.Add("@condition", SqlDbType.NVarChar);
                    com.Parameters["@condition"].Value = "and C_ID=" + model.cid;

                    SqlDataAdapter da = new SqlDataAdapter(com);
                    DataTable dt = new DataTable();
                    da.Fill(dt);
                    DataRow dr = dt.Rows[0];
                    string twopwd = dr[0].ToString();
                    return twopwd;
                }
            }
        }