上一篇介紹的是mysql的儲存過程的一些語法

如：concat在Oracle裡是沒有的，Oracle拼接字元是用‘||’

Oracle用遊標是這樣的

CREATE OR REPLACE PROCEDURE UPDATE_SNS_USERSCORE(table_name  in varchar2) as

    TYPE i_rowid IS TABLE OF ROWID;
    v_i_rowid i_rowid;
    type ref_cursor is ref cursor;
    c_rowid ref_cursor;

    v_errmsg varchar2(1024);
    BEGIN
    OPEN c_rowid FOR 'SELECT rowid FROM '||table_name ;
    LOOP
    fetch c_rowid bulk collect
    into v_i_rowid LIMIT 1000;
    FORALL i IN 1 .. v_i_rowid.COUNT EXECUTE IMMEDIATE
    'UPDATE '|| table_name||' SET
    SNS_SCORE=0,READ_SCORE=0,FIRST_RANK=1,SECOND_RANK=1,THIRD_RANK=1,LOGIN_FLAG=0,UPDATE_TIME=SYSDATE
		WHERE rowid = :1'
		USING v_i_rowid(i);
		COMMIT;
		exit when c_rowid%NOTFOUND;
		END LOOP;
		COMMIT;
		close c_rowid;

    exception
  when others then
    rollback;
    v_errmsg := 'sqlexception~~sqlcode:' || to_char(sqlcode) ||
                ' sqlstate:' || substr(sqlerrm, 1, 512);
    prc_iread_sys_writelog(2, 4, 'UPDATE_SNS_USERSCORE', v_errmsg, '');
    commit;
end UPDATE_SNS_USERSCORE;
 

type wmshuaiqi:定義型別變數

execute immediate的簡單用法(oracle)

create or replace procedure proc_test(
--引數區域
)
is 
--變數區域
    --sql指令碼
    v_sql varchar2(2000) :='';
    --記錄學生數量
    v_num number;
begin
--執行區域


    -- execute immediate用法1：立刻執行sql語句
    v_sql := 'create or replace view myview as select id,name from student';
    execute immediate v_sql;
    
    --- execute immediate用法2：立刻執行sql語句，並賦值給某個變數
    v_sql := 'select count(1) from student';
    execute immediate v_sql into v_num;
    
    -- execute immediate用法3：帶引數的sql
    v_sql:='select * from student t where t.name=:1 and t.age=:2'; 
    execute immediate v_sql using 'ZhangSan',23;
    
end proc_test;