SqlCommand in C#allow the user to query and send the commands to the database. SQL command is specified by the SQL connection object. Two methods are used, ExecuteReader method for results of query and ExecuteNonQuery for insert, Update, and delete commands. It is the method that is best fo...
--这里面可以设置property属性,每一个property属性都设置到配置的Driver上--></jdbcConnection><javaModelGenerator targetPackage="example.model"targetProject="src\main\java"><!--设置是否在getter方法中,对String类型字段调用trim()方法--><property name="trimStrings"value="true"/></javaModelGenerator><sqlMap...
表示占位符String sql="select * from person where pname=?";//获取预编译处理的statementps=conn.prepareStatement(sql);//设置sql语句中的参数,第一个为sql语句中的参数的?(从1开始),第二个为设置的参数值ps.setString(1,"qzy");//向数据库发出 sql 语句查询,并返回结果集rs=ps.executeQuery();while(...
String Dim strSQLAuthors As String Dim strSQLByRoyalty As String 'record variables Dim intRoyalty As Integer Dim strAuthorID As String ' Define a command object for a stored procedure Set Cnxn = New ADODB.Connection strCnxn = "Provider='sqloledb';Data Source='MySqlServe...
(DSN) Set Cnxn1 = New ADODB.Connection Cnxn1.ConnectionString = "Provider='sqloledb';Data Source='MySqlServer';" & _ "Initial Catalog='Pubs';Integrated Security='SSPI';" Cnxn1.Open MsgBox "Cnxn1 state: " & GetState(Cnxn1.State) ' Open a connection using a DSN and ...
protectedvoidBtnSearch_Click(objectsender,EventArgse){stringconnetionString;System.Data.SqlClient.SqlConnectioncnn;connetionString=@"Data Source=xxx.database.windows.net;Initial Catalog=xxx;User ID=xxx ;Password=xxxxx ";cnn=newSqlConnection(connetionString);cnn.Open();S...
.sql.ResultSet;importjava.sql.SQLException;importjava.sql.Statement;importorg.postgresql.copy.CopyManager;importorg.postgresql.core.BaseConnection;publicclassMigration{publicstaticvoidmain(String[]args){Stringurl=newString("jdbc:postgresql://10.180.155.74:8000/gaussdb");//URL of the databaseStringuser=...
importjava.sql.Connection; importjava.sql.DriverManager; importjava.sql.SQLException; publicclassSQLException { publicstaticvoidmain(String[] args) { Connection connection =null; try{ // Load the Oracle JDBC driver String driverName ="oracle.jdbc.driver.OracleDriver"; ...
ConnectionString = "Provider=" & DP & _ ";Data Source=" & DS & _ ";Initial Catalog=" & DB & _ ";Integrated Security=SSPI;" ' Connect to data source and execute the SQL commands. objRs.Open CommandText, ConnectionString, _ adOpenStatic, adLockReadOnly, adCmdText ' Display the first ...
String sql= "INSERT INTO CUSTOMER " + "(CUST_ID, NAME, AGE) VALUES (?, ?, ?)"; Connection conn=null;try{ conn=dataSource.getConnection(); PreparedStatement ps=conn.prepareStatement(sql); ps.setInt(1, customer.getCustId()); ps.setString(2, customer.getName()); ...