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#ifndef CONNECTION_H
#define CONNECTION_H
#include <QMessageBox>
#include <QSqlDatabase>
#include <QSqlQuery>
static bool createConnection()
{
    QSqlDatabase db = QSqlDatabase::addDatabase(“QSQLITE”);
    db.setDatabaseName(“:memory:”);
    if (!db.open()) {
        QMessageBox::critical(0, qApp->tr(“Cannot open database”),
            qApp->tr(“Unable to establish a database connection.”
                     ), QMessageBox::Cancel);
        return false;
    }
    QSqlQuery query;
    query.exec(“create table student (id int primary key, ”
               “name varchar(20))”);
    query.exec(“insert into student values(0, ‘first’)”);
    query.exec(“insert into student values(1, ’second’)”);
    query.exec(“insert into student values(2, ‘third’)”);
  &


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rem --------------------- ÅäÖÃ: ftpÉÏ´«²ÎÊý,¼°±¾µØÎļþĿ¼(Êý¾Ý¿â±¸·ÝµÄÁÙʱĿ¼)-----------------
set "PUT_FTP_SERVER=192.168.1.100"
set "PUT_FTP_PORT=21"
set "PUT_FTP_USERNAME=ftpuser"
set "PUT_FTP_PASSWORD=ftppasswd"
set "PUT_DIR=/"
set "LOCAL_DIR=D:\sql_dbbackup\"
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Student(S#,Sname,Sage,Ssex) --S# ѧÉú±àºÅ,Sname ѧÉúÐÕÃû,S ......

SQL Server ѹËõÈÕÖ¾¿Õ¼ä

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ÈçºÎ´¦ÀíàÏ, ¶ÔÓÚ SQL Server 2005 ¼°Ö®Ç°µÄ°æ±¾£¬¿ÉÒÔʹÓÃÈçÏ SQL£º
declare @name varchar(50)
set @name='dbname
'
backup
log @name
with truncate_only
dbcc shrinkdatabase (@name,20)
¿ÉÊÇÔÚ SQL Server 2008 ¿ªÊ¼£¬Ö´ÐÐÉÏÃæµÄÓï¾ä»á±¨´í:
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