ExcelÖÐÊý¾Ýµ¼Èëµ½SQL ServerÊý¾Ý¿â
using System.Data.SqlClient;
using System.Data.OleDb;
private void tsmiImportTeacherInfo_Click(object sender, EventArgs e)
{
DataSet ds;
if (ofdImport.ShowDialog()==DialogResult.OK)
{
ds = ImportExcel(this.ofdImport.FileName); //»ñµÃExcel
}
else
{
return;
}
int odr = 0;
SqlConnection cn = db.sqlconnection();
try
{
cn.Open();
string str = "insert into Teacher (TeacherId,Pwd,eachCourse,TeacherName) values(@TeacherId,@Pwd,@TeachCourse,@TeacherName)";
SqlCommand cmd = db.sqlcommand(str,cn);
int dsLength = ds.Tables[0].Rows.Count; //»ñµÃExcelÖÐÊý¾Ý³¤¶È
&
Ïà¹ØÎĵµ£º
Oracle SQLÐÔÄÜÓÅ»¯¼¼ÇÉ´ó×ܽá ÊÕ²Ø
£¨1£©Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò(Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ)£º
OracleµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬from×Ó¾äÖÐдÔÚ×îºóµÄ±í(»ù´¡±í driving table)½«±»×îÏÈ´¦Àí£¬ÔÚfrom×Ó¾äÖаüº¬¶à¸ö±íµÄÇé¿öÏÂ,Äã±ØÐëÑ¡Ôñ¼Ç¼ÌõÊý×îÉٵıí×÷Ϊ»ù´¡±í¡£Èç¹ûÓÐ3¸öÒÔ ......
ÎÒÃÇÒª×öµ½²»µ«»áдSQL£¬»¹Òª×öµ½Ð´³öÐÔÄÜÓÅÁ¼µÄSQLÓï¾ä¡£
£¨1£©Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò(Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ)£º
OracleµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬from×Ó¾äÖÐдÔÚ×îºóµÄ±í(»ù´¡±í driving table)½«±»×îÏÈ´¦Àí£¬ÔÚf ......
£¨1£©Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò£¨Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ£©
oracleµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒÖÁ×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬from×Ó¾äÖÐдÔÚ×îºóµÄ±í£¨»ù´¡±í£©½«×îÏȱ»´¦Àí£¬ÔÚfrom×Ó¾äÖаüº¬¶à¸ö±íµÄÇé¿öÏÂ,Äã±ØÐëÑ¡Ôñ¼Ç¼ÌõÊý×îÉٵıí×÷Ϊ»ù´¡±í¡£Èç¹ûÓÐ3¸öÒÔÉϵıíÁ¬½Ó²éѯ, ÄǾÍÐèҪѡÔñ½»²æ±í(intersection table)×÷Ϊ»ù´ ......
SQL£¨½á¹¹»¯²éѯÓïÑÔ£©×¢È룬¼òµ¥À´Ëµ¾ÍÊÇÀûÓÃSQLÓï¾äÔÚÍⲿ¶ÔSQLÊý¾Ý¿â½øÐвéѯ£¬¸üеȶ¯×÷¡£Ê×ÏÈ£¬Êý¾Ý¿â×÷Ϊһ¸öÍøÕ¾×îÖØÒªµÄ×é¼þÖ®Ò»£¨Èç¹ûÕâ¸öÍøÕ¾ÓÐÊý¾Ý¿âµÄ»°£©£¬ÀïÃæÊÇ´¢´æ×Ÿ÷ÖÖ¸÷ÑùµÄÄÚÈÝ£¬°üÀ¨¹ÜÀíÔ±µÄÕ˺ÅÃÜÂë ......
·½·¨Ò»:
select CONVERT(varchar, getdate(), 120 )
2004-09-12 11:06:08
select replace(replace(replace(CONVERT(varchar, getdate(), 120 ),\'-\',\'\'),\' \',\'\'),\':\',\'\')
20040912110608 h
select CONVERT(varchar(12) , getdate(), 111 )
2004/09/12
select CONVERT(varchar(12) , getdate(), 11 ......