3.6.2、表函数 sqlite3BtreeCreateTable: Creates anew, empty B-treeina database file.sqlite3BtreeDropTable: Destroys a B-treeina database file. sqlite3BtreeClearTable: Removes all datafroma B-tree, but keeps the B-tree intact. 3.6.3、游标函数(Cursor Functions) sqlite3BtreeCursor: Creates an...
SQLITE_EMPTY 16 /* Database is empty */ #define SQLITE_SCHEMA 17 /* The database schema changed */ #define SQLITE_TOOBIG 18 /* String or BLOB exceeds size limit */ #define SQLITE_CONSTRAINT 19 /* Abort due to constraint violation */ #define SQLITE_MISMATCH 20 /* Data type mismatch...
#define SQLITE_FULL 13 /* Insertion failed because database is full */ #define SQLITE_CANTOPEN 14 /* Unable to open the database file */ #define SQLITE_PROTOCOL 15 /* Database lock protocol error */ #define SQLITE_EMPTY 16 /* (Internal Only) Database table is empty */ #define SQLI...
Button_CreateTable->setEnabled(false);}//插入void stu::on_pushButton_Insert_clicked(){QString sql = QString("insert into %1 values(%2,'%3',%4);").arg(ui->lineEdit_TableName->text()).arg(ui->spinBox_Insertid->value()).arg(ui->lineEdit_InsertName->text()).arg(ui->spinBox_I...
Database is empty */#define SQLITE_SCHEMA 17/* 数据库结构发生改变,The database schema changed */#define SQLITE_TOOBIG 18/* 数据大小超限,String or BLOB exceeds size limit */#define SQLITE_CONSTRAINT 19/* 约束违反,Abort due to constraint violation */#define SQLITE_MISMATCH 20/* 数据类型不...
若定义了NOT NULL约束,则字段必须有一个非空的缺省值。 ALTER TABLE语句的执行时间与表中的数据量无关,它在操作一个有一千万行的表时的运行时间与操作仅有一行的表时是一样的。 在对数据库运行ADD COLUMN之后,该数据库将无法由SQLite 3.1.3及更早版本读取,除非运行VACUUM 命令。
sqliteConnect --connectionString "Data Source=bdTechnologySQLiteConnect.db;Version=3;UseUTF16Encoding=True;" dbConnection=connection connectionString=connectionString dbPath=path success=success // Check whether the connection variable is empty or not. assert --message "Unable to connect to Database!"...
if (namespace == null || namespace.equals("")) { throw new BuilderException("Mapper's namespace cannot be empty"); } builderAssistant.setCurrentNamespace(namespace); cacheRefElement(context.evalNode("cache-ref")); cacheElement(context.evalNode("cache")); ...
Drawable为抽象类,drawable与view有区别的地方,主要是体现事件和交互性上面。 view是面向用户的,是可见的控件,能给它添加点击事件。drawable则相反,不能面向,也不可见,也不能添加点击事件。 drawable有好多子类,drawable为抽象类,所以有很多子类来继承它。
* * @param table the table to insert the row into * @param nullColumnHack SQL doesn't allow inserting a completely empty row, * so if initialValues is empty this column will explicitly be * assigned a NULL value * @param initialValues this map contains the initial column values for the ...