2.2-增删改查 --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*f...
SQLiteConnection.CreateFile(dataBaseFileName); }if(!ExixtsTable("PointManage")) { ExecuteSql(@"CREATE TABLE PointManage( Id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, PointAddress TEXT NOT NULL, PointDes TEXT NOT NULL )"); }if(!ExixtsTable("PointValue")) { ExecuteSql(@"CREATE TABLE Po...
cmd.ExecuteNonQuery(); cmd.CommandText = @"CREATE TABLE PrintDataInfo(id INTEGER PRIMARY KEY, FullSn TEXT, MeterId INT,OrderNr TEXT,TestDate DATETIME)"; cmd.ExecuteNonQuery(); return true; } } } catch (Exception) { return false; } } private void btnCreateTable_Click(object sender, Routed...
#include "dbhelper.h" #include "cglobal.h" Dbhelper::Dbhelper() { db = new sqliteDb(); init_table_0 = R"( CREATE TABLE IF NOT EXISTS tb_user ( id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, name CHAR (50) NOT NULL, age INTEGER );)"; } Dbhelper::~Dbhelper() { if(db!=...
age INTEGER );)";}Dbhelper::~Dbhelper(){ if(db!= nullptr){ db->closeSql(); delete db; }}int Dbhelper::createTable(){ db->setDbDir(DATA_PATH); bool ret = db->creatDbFile(DB_NAME); if(!ret){ return -1; } ret = db->reOpenSql(DB_NAME); if(ret){ db->queryExec(QStri...
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) { ...
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...
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...
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)', );...
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...