When the statement has completed, developers must call the EndExecuteReader method to finish the operation and retrieve the SqlDataReader returned by the command. The BeginExecuteReader method returns immediatel
Represents a Transact-SQL statement or stored procedure to execute against a SQL Server database. This class cannot be inherited.
to connect//to the SQL Server database in which you created the sample//table in Section 1.0cn->ConnectionString ="Server=server;Database=northwind;UID=login;PWD=password;"; cn->Open();//Initialize the SqlDataAdapter object by specifying a Select command//that retrieves data from the sample...
The subroutine then creates a SqlCeCommand to retrieve the ProductID, ProductName, and UnitsInStock columns from the Products table. The subroutine opens a SqlCeDataReader over the result set generated by this command and fetches the first row. The product name is displayed in the ProductName...
Retrieves data from one or more tables. TheSELECTSQL command is built into Visual FoxPro like any other Visual FoxPro command. When you useSELECTto pose a query, Visual FoxPro interprets the query and retrieves the specified data from the tables. You can create aSELECTquery from within the...
// Specify the username parameter.command.Parameters.Add(newSqlParameter("@Username", userName));// Specify the password parameter.command.Parameters.Add(newSqlParameter("@Password", password));// Retrieve the number of matching records.introwCount = ...
42846 Cast from source type to target type is not supported. -461 42847 An OVRDBF command was issued for one of the referenced files, but one of the parameters is not valid for SQL. -7002 42848 Isolation level CS WITH KEEP LOCKS is not allowed. -194 42850 A logical file is invalid in...
do you want to retrieve the command standard output? [Y/n/a] y #是否进行标准输出 执行以上命令后,提示是否将返回的结果进行标准输出。这里输入y,将显示执行结果。输出如下: command standard output: --- Windows IP 配置 以太网适配器 Npcap Loopback Adapter: ...
To fix these issues, you have to either locate another usable backup file or create a new backup set. Microsoft doesn't offer any solutions that can help retrieve data from a corrupted backup set. If a backup file restores successfully on one server but not on another, try different ways ...
String dsName = mergedSqlConfig.getDataSource(); String tmName = mergedSqlConfig.getTransactionManager(); DataSource dataSource = TestContextTransactionUtils.retrieveDataSource(testContext, dsName); PlatformTransactionManager txMgr = TestContextTransactionUtils.retrieveTransactionManager(testContext, tmName...