In-Memory Database An SQLite database is normally stored on disk but the database can also be stored in memory. Read more aboutSQLite in-memory databases here. Data Source=:memory:;Version=3;New=True; SQLite Using UTF16 Data Source=c:\mydb.db;Version=3;UseUTF16Encoding=True; ...
importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.ResultSet;importjava.sql.Statement;publicclassInMemoryDatabaseExample{publicstaticvoidmain(String[]args){try{// 连接到内存数据库Connectionconnection=DriverManager.getConnection("jdbc:sqlite::memory:");// 创建表Statementstatement=connection....
将生成服务中的当前内存数据库实现builder.Services.AddDbContext<PizzaDb>(options => options.UseInMemoryDatabase("items"));替换为此处的 SQLite 数据库: C# builder.Services.AddSqlite<PizzaDb>(connectionString); 利用EF Core 迁移工具,你现在可以生成首次迁移InitialCreate。 保存所有更改,然后运行...
publicasyncstaticvoidInitializeDatabase(){awaitApplicationData.Current.LocalFolder.CreateFileAsync("sqliteSample.db", CreationCollisionOption.OpenIfExists);stringdbpath = Path.Combine(ApplicationData.Current.LocalFolder.Path,"sqliteSample.db");using(SqliteConnection db =newSqliteConnection($"Filename={dbpath...
使用 SetDbConnection(DatabaseFacade, DbConnection, Boolean) 設定連線。 使用 SetConnectionString(DatabaseFacade, String) 設定連接字串。 如需詳細資訊和範例,請參閱搭配 EF Core 使用DbCoNtextOptions和存取SQLite 資料庫。 適用於 Entity Framework Core 9.0 及其他版本 產品版本 Entity Framework Core...
Password="somePassword"}.ToString();varconnection =newSqliteConnection(connectionString); connection.Open();varquery ="ATTACH DATABASE 'file:InMemorySample?mode=memory&cache=shared' AS inMemDb KEY ''; SELECT sqlcipher_export('inMemDb'); DETACH DATABASE inMemDb;";usingvarcmd =newSqliteCommand...
pInMemory 指数据连接句柄指针; 装载数据库文件,指在sqlite>.backup '/ruiy.db'中备份的数据库数据到当前连接的sqlite数据库,或是保存当前连接的数据库数据库数据到数据库文件;in-memory database, zFileName 指保存或恢复的数据库database file文件;
privatevoidsetMaxConnectionPoolSizeLocked() {if(!mConfiguration.isInMemoryDb()&&(mConfiguration.openFlags&SQLiteDatabase.ENABLE_WRITE_AHEAD_LOGGING)!=0) {mMaxConnectionPoolSize=SQLiteGlobal.getWALConnectionPoolSize();<<===关键步骤===}else{// We don't actually need to always restrict the connec...
import sqlite3 # 连接到内存数据库 conn = sqlite3.connect(':memory:') # 创建一个游标对象 cursor = conn.cursor() # 创建表 cursor.execute('''CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)''') # 插入数据 cursor.execute("INSERT INTO users (name, age) VALUES (?,...
.save FILE Write in-memory database into FILE .scanstats on|off Turn sqlite3_stmt_scanstatus() metrics on or off .schema ?PATTERN? Show the CREATE statements matching PATTERN .selftest ?OPTIONS? Run tests defined in the SELFTEST table .separator COL ?ROW? Change the column and row separa...