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FETCH cursor_name INTO variable[,variable,...]
¡¡¡¡¶ÔÓÚSELECT¶¨ÒåµÄÓαêµÄÿһÁУ¬FETCH±äÁ¿ÁÐ±í¶¼Ó¦¸ÃÓÐÒ»¸ö±äÁ¿ÓëÖ®Ïà¶ÔÓ¦£¬±äÁ¿µÄÀàÐÍÒ²ÒªÏàͬ¡£
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SET SERVERIUTPUT ON
DECLARE
v_ename EMP.ENAME%TYPE;
v_salary EMP.SALARY%TYPE;
CURSOR c_emp IS SELECT ename,salary from emp;
BEGIN
OPEN c_emp;
FETCH c_emp INTO v_ename,v_salary;
DBMS_OUTPUT.PUT_LINE('Salary of Employee'|| v_ename
||'is'|| v_salary);
FETCH c_emp INTO v_ename,v_salary;
DBMS_OUTPUT.PUT_LINE('Salary of Employee'|| v_ename
||'is'|| v_salary);
FETCH c_emp INTO v_ename,v_salary;
DBMS_OUTPUT.PUT_LINE('Salary of Employee'|| v_ename
||'is'|| v_salary);
CLOSE c_emp;
END
¡¡¡¡Õâ¶Î´úÂëÎÞÒÉÊǷdz£Âé·³µÄ£¬Èç¹ûÓжàÐзµ»Ø½á¹û£¬¿ÉÒÔʹÓÃÑ­»·²¢ÓÃÓαêÊôÐÔΪ½áÊøÑ­»·µÄÌõ¼þ£¬ÒÔÕâÖÖ·½Ê½ÌáÈ¡Êý¾Ý£¬³ÌÐòµÄ¿É¶ÁÐԺͼò½àÐÔ¶¼´óΪÌá¸ß£¬ÏÂÃæÎÒÃÇʹÓÃÑ­»·ÖØÐÂдÉÏÃæµÄ³ÌÐò£º
SET SERVERIUTPUT ON
DECLARE
v_ename EMP.ENAME%TYPE;
v_salary EMP.SALARY%TYPE;
CURSOR c_emp IS SELECT ename,salary from emp;
BEGIN
OPEN c_emp;
LOOP
FETCH c_emp INTO v_ename,v_salary;
EXIT WHEN c_emp%NOTFOUND;
DBMS_OUTPUT.PUT_LINE('Salary of Employee'|| v_ename
||'is'|| v_salary);
END
¡¡¡¡¼Ç¼±äÁ¿
¡¡¡¡¶¨ÒåÒ»¸ö¼Ç¼±äÁ¿Ê¹ÓÃTYPEÃüÁîºÍ%ROWTYPE£¬¹ØÓÚ%ROWsTYPEµÄ¸ü¶àÐÅÏ¢Çë²ÎÔÄÏà¹Ø×ÊÁÏ¡£
¡¡¡¡¼Ç¼±äÁ¿ÓÃÓÚ´ÓÓαêÖÐÌáÈ¡Êý¾ÝÐУ¬µ±ÓαêÑ¡ÔñºÜ¶àÁеÄʱºò£¬ÄÇôʹÓüǼ±ÈΪÿÁÐÉùÃ÷Ò»¸ö±äÁ¿Òª·½±ãµÃ¶à¡£
¡¡¡¡µ±ÔÚ±íÉÏʹÓÃ%ROWTYPE²¢½«´ÓÓαêÖÐÈ¡³öµÄÖµ·ÅÈë¼Ç¼ÖÐʱ£¬Èç¹ûҪѡÔñ±íÖÐËùÓÐÁУ¬ÄÇôÔÚSELECT×Ó¾äÖÐʹÓÃ*±È½«ËùÓÐÁÐÃûÁгöÀ´Òª°²È«µÃ¶à¡£
¡¡¡¡Àý£º
SET SERVERIUTPUT ON
DECLARE
R_emp EMP%ROWTYPE;
CURSOR c_emp IS SELECT * from emp;
BEGIN
OPEN c_emp;
LOOP
FETCH c_emp INTO r_emp;
EXIT WHEN c_emp%NOTFOUND;
DBMS_OUT.PUT.PUT_LINE('Salary of Employee'||r_emp.ename||'is'|| r_emp.salary);
END LOOP;
CLOSE c_emp;
END;
¡¡¡¡%ROWTYPEÒ²¿ÉÒÔÓÃÓαêÃûÀ´¶¨Ò壬ÕâÑùµÄ»°¾Í±ØÐëÒªÊ×ÏÈÉùÃ÷Óα꣺
SET SERVERIUTPUT ON
DECLARE
CURSOR c_emp IS SELECT ename,sala


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