OPEN statement opens a cursor.

Syntax:

OPEN cursor_name [FOR expression | select_statement];

Description:

Examples:

Open the previously declared cursor:

DECLARE tabname VARCHAR(20) DEFAULT 'db.orders';
DECLARE id INT;
DECLARE cur CURSOR FOR 'SELECT id FROM ' || tabname;
OPEN cur;
FETCH cur INTO id;
WHILE SQLCODE=0 THEN  
  PRINT id;
  FETCH cur INTO id;
END WHILE;
CLOSE cur;

Open a cursor using a dynamic SQL:

DECLARE tabname VARCHAR(20) DEFAULT 'db.orders';
DECLARE id INT;
OPEN cur FOR 'SELECT id FROM ' || tabname;
FETCH cur INTO id;
WHILE SQLCODE=0 THEN  
  PRINT id;
  FETCH cur INTO id;
END WHILE;
CLOSE cur;

Compatibility: Oracle, IBM DB2, Teradata, SQL Server, PostgreSQL, MySQL and Netezza.

See also:

• DECLARE CURSOR
• FETCH
• CLOSE
• SQLCODE