To create the database, select OK.Use Transact-SQLConnect to the Database Engine. From the Standard bar, select New Query. Copy and paste the following example into the query window and select Execute. This example creates the database Sales. Because the keyword PRIMARY isn't used, the fir...
Copy and paste the following example into the query window and selectExecute. SQL -- Creates the login AbolrousHazem with password '340$Uuxwp7Mcxo7Khy'.CREATELOGIN AbolrousHazemWITHPASSWORD='340$Uuxwp7Mcxo7Khy'; GO-- Creates a database user for the login created previously.CREATEUSERAbol...
Create a single database Query the database Clean up resources Show 2 more In this quickstart, you create asingle databasein Azure SQL Database using either the Azure portal, a PowerShell script, or an Azure CLI script. You then query the database usingQuery editorin the Azure portal. ...
Copy and paste the following example into the query window and selectExecute. SQL -- Creates the login AbolrousHazem with password '340$Uuxwp7Mcxo7Khy'.CREATELOGIN AbolrousHazemWITHPASSWORD='340$Uuxwp7Mcxo7Khy'; GO-- Creates a database user for the login created previously.CREATEUSERAbol...
Create a user using T-SQLIn Object Explorer, connect to an instance of Database Engine. On the Standard bar, select New Query. Copy and paste the following example into the query window and select Execute. SQL Copy -- Creates the login AbolrousHazem with password '340$Uuxwp7Mcxo7Khy'...
使用QueryDef 对象是对 ODBC 数据库执行 SQL 传递查询的首选方法。若要从 Microsoft Access 数据库引擎数据库中的 QueryDefs 集合中删除一个 QueryDef 对象,请对该集合使用 Delete 方法。示例以下示例使用 CreateQueryDef 方法创建并执行临时和永久的 QueryDef。 若要使该过程运行,需要使用 GetrstTemp 函数。
Create Database: CREATE DATABASE `shiyan` /*!40100 DEFAULT CHARACTER SET utf8 */ 1 row in set (0.00 sec) mysql> alter database shiyan default character set gbk; Query OK, 1 row affected (0.00 sec) 4.4修改表字符集(alter table 表名 convert to character set 字符集;) ...
QSqlDatabase::drivers() 1. 去查找系统中可用数据库驱动了。 新建方法bool ConnectDB(const QString &dbName),用于创建并配置一个数据库连接。 @sqliteconnection.cpp bool SqlConnection::ConnectDB(const QString &dbName) { QSqlDatabase myDB = QSqlDatabase::addDatabase("QSQLITE"); ...
2.1 调用execSQL("xxx")直接执行SQL命令,例如: execSQL(“create table book(id integer primary key autouincrement, author text, price real,pages integer)”)创建一张名为book的表格。 execSQL(" drop table if exists book")如果book表存在就删除它。
SQL> conn scott/tiger Connected. SQL> conn scott/TIGER Connected. 对于支付卡行业 (PCI) 数据安全标准等要求口令区分大小写的标准而言,这种方法存在问题。 该问题已得到解决,Oracle Database 11g支持区分大小写的口令。通过 DBCA 创建数据库时,系统会提示您是否希望升级到“新的安全标准”,其中之一就是区分大小...