PLS-00386:在FETCH游标和INTO变量之间发现类型不匹配 [英] PLS-00386: type mismatch found between FETCH cursor and INTO variables
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问题描述
以下程序包引发:
PLS-00386:在FETCH游标和INTO变量之间在V_STUDYTBL处发现类型不匹配
代码的目的:
定义包外部的两个类型,一个用于将一组数字发送到存储过程,另一个用于从my_table返回相应的行
Purpose of the code: Define two types outside the package, one is used to send a bunch of numbers into the stored proc and the other is used to return the corresponding rows from my_table
提前感谢您的输入。
Create OR REPLACE Type InputTyp AS VARRAY(200) OF VARCHAR2 (1000);
CREATE TYPE OBJTYP AS OBJECT
(
A NUMBER,
B VARCHAR2 (1000),
C VARCHAR2 (100)
);
CREATE TYPE OutputTyp IS VARRAY (2000) OF OBJTYP;
/
CREATE OR REPLACE PACKAGE my_package
AS
PROCEDURE my_procedure(p_StudyNum IN InputTyp,
p_StdyDtl OutputTyp);
END my_package;
/
CREATE OR REPLACE PACKAGE BODY my_package
AS
PROCEDURE MyProcedure(p_StudyNum IN InputTyp,
p_StdyDtl OutputTyp)
IS
i BINARY_INTEGER := 1;
j BINARY_INTEGER := 1;
CURSOR c_StudyTbl
IS
SELECT A, B, C
FROM my_table
WHERE Study_Number = p_StudyNum(i);
v_StudyTbl OBJTYP;
BEGIN
p_StdyDtl := OutputTyp ();
LOOP
-- This is the first cursor opened for each of the items in the list.
EXIT WHEN i > p_StudyNum.count;
OPEN c_StudyTbl;
LOOP
FETCH c_StudyTbl INTO v_StudyTbl;
EXIT WHEN c_StudyTbl%NOTFOUND;
p_StdyDtl.EXTEND ();
p_StdyDtl (j).A := v_StudyTbl.A;
p_StdyDtl (j).B := v_StudyTbl.B;
p_StdyDtl (j).C := v_StudyTbl.C;
j := j + 1;
END LOOP;
CLOSE c_StudyTbl;
i := i + 1;
END LOOP;
IF c_StudyTbl%ISOPEN
THEN
CLOSE c_StudyTbl;
END IF;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
NULL;
END;
END my_package;
/
推荐答案
对象构造函数在select上:
you'd need to use the object constructor on the select:
SELECT OBJTYP(A, B, C)
FROM my_table
WHERE Study_Number = p_StudyNum(i)
但您可以将过程简化为this而不是所有这些循环:
but you can simplify the procedure to this instead of all those loops:
begin
select cast(multiset(select /*+ cardinality(s, 10) */ a, b, c
from my_table t, table(p_StudyNum) s
where t.study_number = s.column_value) as OutputTyp)
into p_StdyDtl
from dual;
end;
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