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//test.java
import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class test {
public static void main (String [] arge){
try {
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=TableName", user="username",
password="password";
Connection conn= DriverManager.getConnection(url,user,password);
Statement stmt = conn.createStatement();
ResultSet rs;
String strSql = "select name,photo from patient where name='name";
InputStream in = null;
FileOutputStream fileOutStream = null;
rs=stmt.executeQuery(strSql);
while(rs.next()){
//Windows ϵͳÏ´洢·¾¶ÓÃ2¸ö·´Ð±¸Ü
DataOutputStream sos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream("d:\\"+ rs.getString("name") +".jpg")));
//¶Á³öÁ÷ÓÃgetBinaryStream()·½·¨¡£
in = rs.getBinaryStream("photo");
//Óûº´æÊý×éÖð½¥Êä³öÁ÷
int len = 0;
byte[] b = new byte[1024];
while ((len = in.read(b)) != -1) {
sos.write(b,0,len);
}
sos.close();
in.close();
}
rs.close();
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DataType Value Length Data Length
BIGINT 996857543543543 15 8
INT 543543 6 4
SMALLINT 32765 5 2
TINYINT 254 3 1
BIT True 1 1
DECIMAL 765.5432321 11 9
NUMERIC 432.6544 8 5
MONEY 543.1234 ......
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1 룬²»ÔÊÐíÓÐ Null Öµ¡£ bit(1¡¢0 »ò NULL) Êý×Ö£¨×Ö½Ú£©£ ......
SQL SERVERÊý¾Ý¿â¿ª·¢µÄ¶þʮһÌõ¾ü¹æ
Èç¹ûÄãÕýÔÚ¸ºÔðÒ»»ùÓÚSQL SERVER µÄÏîÄ¿£¬»òÕ߸ոսӴ¥SQL SERVER£¬Äã¿ÉÄܽ«ÃæÁÙһЩÊý¾Ý¿âÐÔÄܵÄÎÊÌâ¡£ÕâƪÎÄÕ»áÌṩһЩÓÐÓõľÑé-----¹ØÓÚÈçºÎÐγɺõÄÉè¼Æ¡£
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MySQL:
SELECT column from table
ORDER BY RAND()
LIMIT 1
PostgreSQL:
SELECT column from table
ORDER BY RANDOM()
LIMIT 1
Microsoft SQL Server:
SELECT TOP 1 column from table
ORDER BY NEWID()
IBM DB2
SELECT column, RAND() as IDX
from table
ORDER BY IDX FETCH FIRST 1 ROWS ONLY
Thanks Ti ......