DataRow dr = ds.Tables["student"].NewRow();dr.ItemArray = ds.Tables["student"].Rows[0].ItemArray;ds.Tables["student"].Rows.Add(dr);//===========================1===============================//向一個DataTable大量新增DataRow時有兩種辦法:DataTable dt;DataTable new
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Data.SqlClient;using System.Drawing;using System.Text;using System.Windows.Forms;namespace CTERP{ public partial class FrmSysFunctionMenu : F
註:This method gets the record count much faster than select count(*) from table_name1、一般情況下,可以通過彙總函式Count實現查詢出記錄的總數 select count(*) as 記錄總數 from table_name2、也可以通過查詢系統資料表sysindexes實現 select rows from sysindexes where id=object_id('表名')
利用遊標實現CREATE table userinfo( name char(10), sex char(4), phone char(10))insert userinfo select 'aaa','男','12345' union all select 'bbb','男','12345' union all select 'aaa','男','12345' union all select
-建立資料庫if exists(select * from sysdatabases where name=N'master..test')drop database testcreate database test--建立預存程序(法1)if exists(select * from sysobjects where name=N'proc_name' and type='p')drop proc proc_namecreate proc proc_nameasselect * from ta