Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

¶ÔoracleÖеÄBLOBµÄ²Ù×÷(¶ÁÈ¡£¬Ð´Èë)

 ½«BLOB±£´æÎª±¾µØÎĵµ£º
/// <summary>
/// ¶Á³öBlob×Ö¶Î
/// </summary>
/// <param name="commandText">sqlÓï¾ä£¬Ö´Ðнá¹ûΪBLOBÊý¾Ý</param>
/// <param name="DocumentAddress">½«Òª°ÑBLOBÊý¾Ý±£´æÎªµÄÎĵµµÄ·¾¶</param>
public void ReadBlob(string commandText, string DocumentAddress)
{
try
{
Open();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = commandText;
// ÀûÓÃÊÂÎñ´¦Àí£¨±ØÐ룩
OracleTransaction transaction = cmd.Connection.BeginTransaction();
cmd.Transaction = transaction;
reader = cmd.ExecuteReader();
reader.Read();
OracleLob BLOB = reader.GetOracleLob(0);
reader.Close();
FileStream DataStream = new FileStream(DocumentAddress, FileMode.Create);
int length = 30485760;
byte[] Buffer = new byte[length];
int i;
while ((i = BLOB.Read(Buffer, 0, length)) > 0)
{
DataStream.Write(Buffer, 0, i);
}
DataStream.Close();
BLOB.Clone();
cmd.Transaction.Commit();
}
catch (OracleException e)
{
cmd.Transaction.Rollback();
throw e;
}
finally
{
Close();
}
}

½«±¾µØÎĵµ±£´æÎªBLOBÀàÐÍ£º
/// <summary>
/// дÈëBlob×Ö¶Î
/// </summary>
/// <param name="commandText">sqlÓï¾ä£¬Ö´Ðнá¹ûΪBLOBÊý¾Ý</param>
/// <param name="DocumentAddress">±¾µØÎĵµµÄ·¾¶</param>
public void WriteBlob(string commandText, string DocumentAddress


Ïà¹ØÎĵµ£º

¹â»·¾¡Ê§ OracleÔÚÖйúÈ«ÃæÔâÓö¡°»¬Ìú¬¡±

 
¼Ì9Ô·ݹúÄÚÄ³ÖØÒªITÃÅ»§ÍøÕ¾±¬³ö¡¶520ÍòOracle ERPÏîĿʧ°ÜÖ®ÃÕ¡·µÄ“Ìì¼Û·ç²¨”Ö®ºó£¬11Ô·ݣ¬¹úÄÚijӰÏì×î´óµÄITרҵƽýÔÙ±¬¡¶¼×¹ÇÎÄÅöײ±ùɽ£º²¢¹ºSun½øÍËÁ½ÄÑ¡·¡£Á½Æª±¨µÀ´Ó²»Í¬½Ç¶È½Ò¶ÁËOracleÔÚÖйúµÄ¼Û¸ñ“Òþ˽”¡¢ÇþµÀÂÒÏ󡢿ͻ§Á÷ʧµÈ¾½Ïà¡£×ÅʵÈÃOracleÖйú¹«Ë¾µÄ¹«¹ØÃÇæ»îÁ˺ÃÒ ......

oracleÈÕÆÚº¯Êý¼¯ ÉîδÀ´

OracleÔÚÈÕÆÚʹÓÃÉÏÔÊÐí¼«´óµÄÁé»îÐÔ¡£ÓÉÓÚ¿ÉÒÔÔÚÈÕÆÚ×ֶδ洢ʱ¼äºÍÈÕÆÚ£¬´Ó¶øÓк¯Êý¿ÉÒÔ¼ÈÒýÓÃÈÕÆÚÓÖÒýÓÃʱ¼ä¡£
Oracle ËùÌṩµÄһЩÈÕÆÚº¯ÊýÈçÏÂËùʾ¡£
1. SYSDATE
·µ»Øµ±Ç°µÄÈÕÆÚºÍʱ¼ä¡£
ʾÀý
SELECT sysdate from dual;
SYSDATE
----------
05-3ÔÂ -03
2. ADD_MONTHS(d, no_of_month)
µ±Ç°ÈÕÆÚ"m"ºóÍÆ"no_o ......

OracleÓαêʹÓù¥ÂÔ

Sql´úÂë
1.
´ÓÓαêÌáÈ¡Êý¾Ý
2. ´ÓÓαêʧȥһÆðÊý¾ÝÔËÓÃFETCHÏÂÁÿһ´ÎÌáÈ¡Êý¾Ýºó£¬Óα궼ָÏò½á¹û¼¯µÄÏÂÒ»Æð¡£Óï·¨Èç´Î£º
3. FETCH cursor_name INTO variable[,variable,...]
4. ÖÁÓÚSELECT¶¨ÒåµÄÓαêµÄÿһÁУ¬FETCH±äÁ¿ÁÐ±í¶¼Ó¦¸ÃÓÐÒ»¸ö±äÁ¿ÓëÖ®Ïà¶ÔÓ¦£¬±äÁ¿µÄ²¿ÀàÒ²ÒªÀ×ͬ¡£
Àý£º
5. SET SERVERIUTPUT ......

SQL ServerÀィORACLEÁ´½Ó·þÎñÆ÷µÄͼ½â

 Ê×ÏȼÆËã»úÉϱØÐë°²×°oracle£¬²¢ÅäÖú÷þÎñÃû
  °²×°oracleµÄ¹ý³ÌÖÐÒ»°ã»áÒªÇó½¨Á¢Ò»¸öÊý¾Ý¿â£¬Ò²¿ÉÒÔÖ®ºóÔÙ´´½¨
Õâ¸öºóÃæÓÐÒ»¸ö Êý¾Ý¿âÅäÖÃÖúÀí £¨´´½¨ÐÞ¸ÄÊý¾Ý¿âµÄ£¬Ò»°ãÃÜÂë´´½¨ÒªÇó×Öĸ¿ªÍ·£¬´óÓÚ7λɶµÄ£©ºÍÒ»¸önetÅäÖÃÖúÀí£¨Ìí¼Ó»òÕßÐÞ¸ÄÒ»¸öÊý¾Ý¿â·þÎñÃû£©£¬Ò»°ãÓÃplsql developerÔ¶³Ì²Ù×÷oracleÊý¾Ý¿â ......

OracleÖÐ×ÔÔö×ֶεĴ´½¨

²½Ö裺
1.Ê×ÏÈ£¬ÄãÒªÓÐÒ»ÕÅ±í£¡
       CREATE TABLE example(
             ID Number(4) NOT NULL PRIMARY KEY,
             NAME VARCHA ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ