SqlConnection 实现 ICloneable 示例 以下示例创建一个SqlCommand和一个SqlConnection。 打开SqlConnection并将其设置为SqlCommand的Connection。 然后,该示例调用ExecuteNonQuery。 为此,ExecuteNonQuery将传递 SqlConnection 和查询字符串,该字符串是 Transact-SQL INSERT 语句。 当代码退出 using 块时,将自动关闭连接。
{0}", connection.State); Console.WriteLine("ConnectionString: {0}", connection.ConnectionString); } }staticprivatestringGetConnectionString(){// To avoid storing the connection string in your code,// you can retrieve it from a configuration file.return"Data Source=MSSQL1;Initial Catalog=...
{ RETCODE rc; // ODBC return code HENV henv; // Environment HDBC hdbc; // Connection handle HSTMT hstmt; // Statement handle unsigned char szData[MAX_DATA]; // Returned data storage SDWORD cbData; // Output length of data unsigned char chr_ds_name[SQL_MAX_DSN_LENGTH]; // Data ...
connection.Open(); Console.WriteLine("State: {0}", connection.State); Console.WriteLine("ConnectionString: {0}", connection.ConnectionString); } } static private string GetConnectionString() { // To avoid storing the connection string in your code, // you can retrieve it from a configuratio...
Connection 数据库连接对象 可以 获取 SQL 执行对象 , SQL 执行对象有以下 3 种 : 普通SQL 执行对象 : 代码语言:javascript 代码运行次数:0 运行 AI代码解释 StatementcreateStatement()throws SQLException; 预编译 SQL 语句的 SQL 执行对象 : 这种方式执行 SQL 语句 , 可以 防止被 SQL 注入 ; ...
具体错误信息如下：“com.zaxxer.hikari.pool.ProxyConnection - [checkException,157] - DatebookHikariCP - Connection oracle.jdbc.driver.T4CConnection@5b1aa003 marked as broken because of SQLSTATE(08006), ErrorCode(17002)”。这条信息说明了数据库连接被标记为损坏，其原因是IO错误，连接超时。
操作数据库过程中,遇到许多问题,很多都与SQL CODE和SQL State相关,现在把一个完整的SQLCODE和SQLState错误信息和相关解释作以下说明,一来可以自己参考,对DB2错误自行找出原因 (声明:这是搜集网上的资料得来的,详细出处不记得了) sqlcode sqlstate 说明 000 00000 SQL语句成功完成 ...
Explanation: Connection does not exist. 说明：连接不存在。SQLCODE -900 SQLSTATE 08003 Explanation: Application process not in a connected state. 说明：应用程序不处于连接状态的过程。根据执行次数排序 [db2inst2@localhost ~]$ grep -ni "number of executions" snap.out |grep -v "=0" |...
SqlConnectionFactory.SingletonInstance.ClearAllPools(); }staticpublicvoidClearPool(SqlConnection connection) { ADP.CheckArgumentNull(connection,"connection"); DbConnectionOptions connectionOptions=connection.UserConnectionOptions;if(null!=connectionOptions) ...
master.dbo.xp_create_subdir N'C:\backups\D..." failed with the following error: "xp_create_subdir() returned error 5, 'Access is denied.'". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not ...