--插入--注意:Integer允许自动增长(不要被Identity 忽悠)insertintoUserInfo(UserId,UserNames,UserPasss,RegDate)values(1001,'admin','admin','2021-01-21')insertintoUserInfo(UserId,UserNames,UserPasss,RegDate)values(1002,'sanha','sanha', datetime('now','localtime'))--查询select*fromUserInfo--Li...
{publicstaticstringdataBaseFileName = AppDomain.CurrentDomain.BaseDirectory +"goods.db";publicstaticstringconnectionString =@"Data Source="+ dataBaseFileName +"; Pooling=true;FailIfMissing=false;";publicDBHelperSQLite() { }publicstaticvoidExistsDataBase() {if(!File.Exists(dataBaseFileName)) { SQLi...
private static final int SQLITE_NOTADB = 26; @Override public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate() { return new SQLExceptionConversionDelegate() { @Override public JDBCException convert(SQLException sqlException, String message, String sql) { final int errorCode = JdbcException...
static bool CreateTable(string db) { try { using (var con = new SQLiteConnection(db)) { con.Open(); using (var cmd = new SQLiteCommand(con)) { cmd.CommandText = "DROP TABLE IF EXISTS PrintDataInfo"; cmd.ExecuteNonQuery(); cmd.CommandText = @"CREATE TABLE PrintDataInfo(id INTEGER PR...
(QString dirPath);//设置数据库存放路径 bool creatDbFile(QString dbName);//生成一个db文件 bool reOpenSql(QString dbName);//打开连接 bool closeSql();//关闭连接 bool queryExec(QString dbName,QString sqlStr);//执行sql语句,不获取结果 bool queryExec(QString dbName,QString sqlStr,QList<Q...
INTEGER值是一个带符号的整数，根据值的大小存储在1、2、3、4、6或8字节中。REAL浮点数字，存储为8...
return convertToTree(results); } //查询所有数据 public List<Tree> queryDataList() { Cursor results = mDatabase.query(TABLE_NAME, new String[]{KEY_ID, KEY_NAME, KEY_AGE, KEY_PRICE}, null, null, null, null, null); return convertToTree(results); ...
void sqliteDb::errorSql(QString sql){ errorSqlText = sql; qCritical("%s",qPrintable(errorSqlText)); //QString("数据库执行错误:%1 ")+sql.toUtf8().constData();}//获取错误的数据库语句QString sqliteDb::getErrorSql(){ if(databaseName.isEmpty()) { return "db not setting";//数据...
We get a conversion error trying to parse an integer from a string. This is unfortunate with SQLite due to it not having almost any typing at all. The row that breaks is this: id fips name district state--- --- --- --- ---1955Statewide writein NA Now looking into the schema, i...
不同于TEXT和REAL，我们可以用INTEGER字段来存储日期和时间值。我们通常用INTEGER来表示UNIX时间戳，也就是自1970-01-01 00:00:00 UTC以来的秒数。Using SQLite, you can freely choose any data types to store date and time values and use the built-in dates and times function to convert ...