FETCH NEXT FROM nodename_cursor INTO @NodeName END CLOSE nodename_cursor DEALLOCATE nodename_cursor UPDATE T_SME_AuditLog SET OperationLog = @FirstOperationLog WHERE LogId = @FirstLogId; End DECLARE audit_cursor CURSOR FOR SELECT LogId,OperationLog,LogXml,ProcessDate FROM T_SME_AuditLog t W...
--UPDATE MemberAccount SET UserName = UserName + 'A' WHERE CURRENT OF My_Cursor; --更新 --DELETE FROM MemberAccount WHERE CURRENT OF My_Cursor; --删除 FETCH NEXT FROM Du_Cursor into @linkmanno,@str; --读取下一行数据 END CLOSE Du_Cursor; --关闭游标 DEALLOCATE Du_Cursor; --释放...
In this document, sql developers will find aSQL cursor examplet-sql code to list number of rows (record counts) in all user tables in a MS SQL Server database. Note that with the T-SQL enhancements introduced with MS SQL Server 2005 and MS SQL Server 2008, developers and database a...
Here is aT-SQL cursor examplecode created forloopingselecting a list of email addresses for emailing. The select query in the definition of theexample t-sql cursorreturns the example record set that will be used for emailing purposes. After we declare and open theexample sql cursor, byfetch n...
In this example, we will use a scroll cursor and use the following items to selectively choose the record to work with instead of looping through rows one by one. FETCH FIRST:Moves to the first record. FETCH LAST:Moves the cursor to the last record of the result set. ...
SQL Cursor Example This SQL Server cursor example (Simple script to backup all SQL Server databases) issues backups in a serial manner: DECLARE @name VARCHAR(50) -- database name DECLARE @path VARCHAR(256) -- path for backup files
public class CursorExample {public static void main(String[] args) {String jdbcUrl = "jdbc:mysql://localhost:3306/mydatabase"; String username = "root"; String password = "password"; try (Connection conn = DriverManager.getConnection(jdbcUrl, username, password)) {String sql = "SELECT id,...
In SQL Server, for example, you can use the FETCH NEXT statement to retrieve the next row. FETCH FIRST retrieves the first row from the cursor's result set. It is commonly used in combination with an ORDER BY clause to fetch the first row based on a specified sorting order. FETCH ...
PL/SQL cursor example We will use theordersandorder_itemstables from thesample databasefor the demonstration. The following statementcreates a viewthat returns the sales revenues by customers: CREATEVIEWsalesASSELECTcustomer_id, SUM(unit_price * quantity) total, ROUND(SUM(unit_price * quantity) ...
此段摘自于MySQL Tutorial (MySQL Cursor with Example): To handle a result set inside a stored procedure, you use a cursor. A cursor allows you to iterate a set of rows returned by a query and process each row individually. MySQL cursor is read-only, non-scrollable and asensitive. ...