标签：status QT dataBase int 编程 sqlQuery Mysql arg LGMsg
一.单个数据库单个表格
1.建立并打开数据库
"MyBlastRecord.db"为我们要创建的数据库名
2.往数据库里创建表格
recordview为我们创建表格名
recordview(id int primary key, date text, num int, status int, BlastRecord_id int)
括号里是我们表格里内容
3.sql_query.exec("select * from recordview");
访问表格里面的数据
4.sql_query.next()
表格的下一行，直到表格为空
5.数据库关闭。
//建立并打开数据库
QSqlDatabase database = QSqlDatabase::addDatabase("QSQLITE");
database.setDatabaseName("MyBlastRecord.db"); //格式 (MyBlastRecord.db)
if (!database.open())
{
qDebug() << "Error: Failed to connect database(MyBlastRecord)." << database.lastError();
}
//创建表格
QSqlQuery sql_query = QSqlQuery(database);
if(!sql_query.exec("create table recordview(id int primary key, date text, num int, status int, BlastRecord_id int)"))
{
qDebug() << "Error: Fail to create table.(updateBlastRecord)"<< sql_query.lastError();
}
sql_query.exec("select * from recordview");
if(sql_query.exec())
{
while(sql_query.next())
{
Mode_temp=sql_query.value(3).toInt();
if (sql_query.value(3).toInt() !=1)
{
ret++;
}
}
}
database.close();
二、单个数据库多个表格
#include <QSqlRecord>
#include <QSqlDriver>
#include <QSqlField>
#define CONNECTNAME "mysqlite_con"
#define DATABASENAME "Launcher.db"
#define DATABASEDRIVER "QSQLITE"
DataManage* DataManage::m_pDataManage = Q_NULLPTR;
QMutex DataManage::m_mutex;
DataManage::DataManage(QObject *parent) : QObject(parent)
{
if (QSqlDatabase::contains(CONNECTNAME)){
m_dataBase = QSqlDatabase::database(CONNECTNAME);
}else{
m_dataBase = QSqlDatabase::addDatabase(DATABASEDRIVER,CONNECTNAME);
m_dataBase.setDatabaseName(DATABASENAME);
}
if(!m_dataBase.isOpen())
m_dataBase.open();
QStringList tableList = m_dataBase.tables();
QSqlQuery sqlQuery(m_dataBase);
if(!tableList.contains("systemview")){
if(!sqlQuery.exec("create table systemview(id int primary key, bdlight int, bklight int, bmtime datetime, longitude varchar(5), "
"latitude varchar(5), locattime datetime, style int, keyvoice int, charge int, "
"canswitch int, mA1data int, mA2data int, uAdata int, LG00Enable int, orgNum int, "
"StatusCheck int, PageStyle int, NeedAuth int, NeedGPS int, AuthNum int, DeviceID1 int, DeviceID2 int, "
"DeviceID3 int, DeviceID4 int, DeviceID5 int, SW int, DVStatus int)")){
qDebug() << "Error: Fail to create table:systemview"<<sqlQuery.lastError();
}
}
if(!tableList.contains("delayview")){
if(!sqlQuery.exec("create table delayview(id int primary key, code text, time int, area int, hole int, authstatus int)")){
qDebug() << "Error: Fail to create table:delayview"<<sqlQuery.lastError();
}
}
if(!tableList.contains("recordview")){
if(!sqlQuery.exec("create table recordview(id int primary key, date text,"
" num int, status int, BlastRecord_id int, Longitude text, Latitude text, bscanma int, bscanmv int, "
"scaningma int, scaningmv int, bchargema int, bchargemv int, chargingma int, chargingmv int, chargedma int, "
"bchargedmv int, bboomma int, bboomemv int, batenp int)")){
qDebug() << "Error: Fail to create table:recordview"<<sqlQuery.lastError();
}
}
if(!tableList.contains("recordlistview")){
if(!sqlQuery.exec("create table recordlistview(id int primary key, code text, time int, blastrecord_id int)")){
qDebug() << "Error: Fail to create table:recordlistview"<<sqlQuery.lastError();
}
}
if(!tableList.contains("authheadview")){
if(!sqlQuery.exec("create table authheadview(id int primary key, espdata text, "
"authid text, longitude varchar(5), latitude varchar(5),"
"radius int, starttime text, stoptime text, lgnumber int,"
" usefultime int, lgrang_number int, password_number int,downdata text)")){
qDebug() << "Error: Fail to create table:authheadview"<<sqlQuery.lastError();
}
}
if(!tableList.contains("authpasswordview")){
if(!sqlQuery.exec("create table authpasswordview(id int primary key, LGPassword text, authfile_id int)")){
qDebug() << "Error: Fail to create table:authpasswordview"<<sqlQuery.lastError();
}
}
if(!tableList.contains("userInfo")){
if(!sqlQuery.exec("create table userInfo(userId int primary key, orgId varchar(32), "
"realName nvarchar(32),orgName nvarchar(32),loginName varchar(32),userPasswd varchar(32))")){
qDebug() << "Error: Fail to create table:userInfo"<<sqlQuery.lastError();
}
}
}
访问数据库的表格
void DataManage::setDelayPara(LGMessageDef *LGMsg, int lg_num)
{
int i = 0, j = 0;
char *code = new char[24];
QSqlQuery sqlQuery(m_dataBase);
sqlQuery.exec("select * from delayview");
if(sqlQuery.exec())
{
while(sqlQuery.next())
{
j++;
}
}
for (i = 0; i < lg_num; i++)
{
if (0 != ((LGMsg+i)->Det_status & mDesign))
{
continue;
}
DetidToString((LGMsg+i)->Uid, code);
QString uid = QString(QLatin1String(code));
int time = (LGMsg+i)->DT;
int area = (LGMsg+i)->KW>>10;
int hole = (LGMsg+i)->KW&0x3FF;
int status = 1;
if(((LGMsg+i)->Det_status & mAuthorize)==0) //获取雷管当前状态
{
status=0;
}
if(false == m_dataBase.tables().contains(uid))
{
QString str=QString("INSERT INTO delayview VALUES(%1, \"%2\", %3, %4, %5, %6)").arg(j+1).arg(uid).arg(time).arg(area).arg(hole).arg(status);
sqlQuery.exec(str);
(LGMsg+i)->DesignDT=(LGMsg+i)->DT;
(LGMsg+i)->DesignKW=(LGMsg+i)->DT;
(LGMsg+i)->Det_status |=mDesign;
j++;
}
}
sqlQuery.exec();
delete code;
//return true;
}
标签：status,QT,dataBase,int,编程,sqlQuery,Mysql,arg,LGMsg 来源： https://www.cnblogs.com/zhouyuqing1024/p/13073375.html
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