--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...
(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...
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...
import 'package:sqflite/sqflite.dart'; import 'dart:convert'; void main() async { // 获取数据库路径 final database = await openDatabase( 'my_database.db', onCreate: (db, version) { return db.execute( 'CREATE TABLE users(id INTEGER PRIMARY KEY, name TEXT, hobbies TEXT)', );...
CityForecastTable.ID to INTEGER + PRIMARY_KEY, CityForecastTable.CITY to TEXT, CityForecastTable.COUNTRY to TEXT) 1. 2. 3. 4. AI检测代码解析 这就是整个函数看起来的样子: 1. AI检测代码解析 override fun onCreate(db: SQLiteDatabase) { ...
Dateproperties can be mapped to either the 'TEXT' or to the 'INTEGER' storage class (defaults to 'INTEGER') and their values will be stored as UTC. Using 'INTEGER' converts to Unix-Time, so fractions of seconds are lost. This can be changed by using the field option 'dateInMilliSecond...
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...
final String sqlStr = "create table if not exists " + TABLE_NAME + " (" + KEY_ID + " integer primary key autoincrement, " + KEY_NAME + " text not null, " + KEY_AGE + " integer," + KEY_PRICE + " float);"; db.execSQL(sqlStr); ...
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...