mssql2008 自定义表类型实现(批量插入或者修改)_MySQL
bitsCN.com
在做大型网站或者系统的时候,经常会遇到个问题就是批量插入或者修改数据库。如果遇到这个问题,还是一条条记录来处理,这样的效率太低了,所以要考虑批量插入或者修改
今天这边不讲SqlBulkCopy,只简单讲sql自定义表类型。因为目前的项目我用到了分表的方式,用存储过程比较方便自动创建分表。现在把我目前写的功能简单做个记录,也方便以后自己查阅
第一步,在数据库里点击 新建查询 创建相应的sql
--======自定义表类型Demo======
--创建表
create table tab
(
tabvalue varchar(10)
)
go
--创建自定义表类型
create type Type_tab as table
(
Type_tabvalue varchar(10)
)
go
--创建 存储过程
create procedure p_Tab
(
@ptab Type_tab readonly
)
as
begin
insert into tab select * from @ptab
end
--sql 测试表类型 type1
declare @tt Type_tab
insert into @tt values('a')
insert into @tt values('b')
insert into @tt values('c')
insert into tab select * from @tt
select * from tab
--sql 测试表类型 type2
declare @tt2 Type_tab
insert into @tt2 values('a')
insert into @tt2 values('b')
insert into @tt2 values('c')
execute p_Tab @tt2
第二步 asp.net 调用 存储过程
using (SqlConnection conn =SqlHelper.Settings.GetSqlConnection(true))
{
try
{
DataTable DtAdd = new DataTable();
DtAdd.Columns.Add("tabvalue");
DtAdd.Columns["tabvalue"].DataType = System.Type.GetType("System.String");
foreach (ModelEnt rl in List)
{
DataRow Dr = DtAdd.NewRow();
Dr["tabvalue"] = rl.tabvalue;
DtAdd.Rows.Add(Dr);
}
//int Rt = SqlHelper.SqlHelper.SqlBulkCopy(DtAdd, TableName, conn);
SqlCommand cmd = new SqlCommand("p_Tab", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@ptab", SqlDbType.Structured).Value =DtAdd;
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
return cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
#if DEBUG
throw ex;
#else
return -10000;
#endif
}
finally
{
conn.Close();
}
ModelEnt 是tab表对应的实体类。list 是ModelEnt 的一个集合,这样可以实现多个row,这样就能一次插入多条记录。bitsCN.com

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