ORDER BY value DESC LIMIT 1;";dispatch_async(queue, ^{ sqlite3 *database = openDb(); sqlite3_stmt *stmt;if(sqlite3_prepare_v2(database, query,-1, &stmt,NULL) == SQLITE_OK) {while(YES) { sqlite3_bind_int(stmt,1, arc4random());intreturnCode = sqlite3_step(stmt);if(returnCod...
// Upgrade the existing database to conform to the new version. Multiple // previous versions can be handled by comparing _oldVersion and _newVersion // values. // The simplest case is to drop the old table and create a new one. _db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE...
static void sqliteInitialize() { // Enable multi-threaded mode. In this mode, SQLite is safe to use by multiple // threads as long as no two threads use the same database connection at the same // time (which we guarantee in the SQLite database wrappers). sqlite3_config(SQLITE_CONFIG...
Opening multiple databases importsqlite3from'sqlite3'import{open}from'sqlite'(async()=>{const[db1,db2]=awaitPromise.all([open({filename:'/tmp/database.db',driver:sqlite3.Database}),open({filename:'/tmp/database2.db',driver:sqlite3.Database}),])awaitdb1.migrate({migrationsPath:'...'...
ORDER BY子句 指定升序或降序 指定多个排序键 NULL的顺序 在排序键中使用显示用的别名 ORDER BY子句中可以使用的列 4 数据更新 4-1 数据的插入(INSERT语句的使用方法) INSERT语句的基本语法 列清单的省略 插入NULL 插入默认值 从其它表中复制数据 4-2 数据的删除(DELETE语句的使用方法) DELETE语句的基本语法 指...
This method disables the features enabled by #enableWriteAheadLogging(). Dispose() (Inherited from Object) Dispose(Boolean) (Inherited from Object) EnableWriteAheadLogging() This method enables parallel execution of queries from multiple threads on the same database. EndTransaction() End a tran...
It is possible to insert multiple rows like: transaction.executeSql('INSERT INTO MyTable VALUES (?,?),(?,?)', ['Alice', 101, 'Betty', 102]); which was not supported by SQLite 3.6.19 as referenced by Web SQL (DRAFT) API section 5. The iOS WebKit Web SQL implementation seems to ...
Moreover, when opening a related record by pressingCtrl+Shift+Clickon a foreign key cell, the other table will be opened now in a new tab. Specifying multiple tables using the -t/--table parameter on the command line now opens all of them in different tabs. (ab682a3) ...
We can define multiple predicates on one property as well as on multiple properties: {userLoginName:{gte:'A',lt:'B'},userJsonData:{isNotNull:true}}// transforms to: WHERE user_loginname >= 'A' AND user_loginname < 'B' AND user_json IS NOT NULL ...
execute("INSERT INTO category VALUES (?, ?, ?)", [(2, 2, 'computer')]) # execute multiple commands c.executemany('INSERT INTO book VALUES (?, ?, ?, ?, ?)', books) conn.commit() conn.close() 插入数据同样可以使用execute()来执行完整的SQL语句。SQL语句中的参数,使用"?"作为替代符号...