[英]How to 'select into' / define a variable used by a cursor before a cursor
嘗試定義一個ID,以便每次運行游標時游標都不必通過where子句查找該ID。 有辦法嗎? 我嘗試編譯代碼沒有成功:(以下是我的代碼:(提前感謝)
create or replace PROCEDURE PROC
is
CURSOR Sample IS
SELECT distinct lpad(DATA_DATE, 7, 0) as DATA_DAY
from (
select
v.DATA_DATE,
v.HR,
sv.submission_value_id
from value v
inner join submission s on s.value_id = v.value_id
where sv.SUBMISSIONE_ID NOT IN (
SELECT SUBMISSION_ID FROM FLAG WHERE FLAG.FLAG_ID = (SELECT FLAG_ID from FLAG where FLAG_TX = 'Processed / Calculated'))
and v.data_date is not null
)
where data_date is not null;
l_day days%ROWTYPE;
BEGIN
SELECT FLAG_ID into v_flag_id from FLAG where FLAG_TX = 'Processed / Calculated';
我正在嘗試做的是使光標不必一直查找該flag_id,而已將其定義好,以便光標可以拉出它。 有可能這樣做嗎?
如果我理解您的要求(通過閱讀標題而不是提供的示例),我想您需要一個參數化的游標 。 這是一個基於Scott模式的示例:
SQL> set serveroutput on;
SQL> declare
2 l_deptno dept.deptno%type;
3
4 cursor c_emp (par_deptno in dept.deptno%type) is
5 select ename
6 from emp
7 where deptno = par_deptno;
8 c_emp_r c_emp%rowtype;
9 begin
10 l_deptno := 10;
11 open c_emp(l_deptno);
12 loop
13 fetch c_emp into c_emp_r;
14 exit when c_emp%notfound;
15 dbms_output.put_line(c_emp_r.ename);
16 end loop;
17 close c_emp;
18 end;
19 /
CLARK
KING
MILLER
PL/SQL procedure successfully completed.
SQL>
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