在 Oracle 11g 的过程中将 REFCURSOR 变量打印为 OUT 参数时出错
我正在使用 Oracle (Oracle 11.1.0.7.0).我在 MyPackage 包中创建了一个示例存储过程.我以用户DBA_USER"身份登录以创建此 SP.
I am using Oracle (Oracle 11.1.0.7.0). I have created a sample stored procedure inside a package MyPackage. I was logged in as a user "DBA_USER" for creating this SP.
PROCEDURE WT_MANAGEMENT_PRODUCTIVITY
(
cur_output Out T_CURSOR
)AS
sqlstr VARCHAR2(5000);
BEGIN
Sqlstr:='select sysdate from dual';
Open cur_output For Sqlstr;
END WT_MANAGEMENT_PRODUCTIVITY;
我尝试使用
var r ref cursor;
exec MyPackage.WT_MANAGEMENT_PRODUCTIVITY(:r);
print r;
但它在 Oracle SQL Developer 中引发以下错误
But it throws following error in Oracle SQL Developer
Usage: VAR[IABLE] [ <variable> [ NUMBER | CHAR | CHAR (n [CHAR|BYTE]) |
VARCHAR2 (n [CHAR|BYTE]) | NCHAR | NCHAR (n) |
NVARCHAR2 (n) | CLOB | NCLOB | REFCURSOR |
BINARY_FLOAT | BINARY_DOUBLE ] ]
Error starting at line 2 in command:
exec MyPackage.WT_MANAGEMENT_PRODUCTIVITY(:r);
Error report:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'WT_MANAGEMENT_PRODUCTIVITY'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:
%s"
*Cause: Usually a PL/SQL compilation error.
*Action:
r
------
T_CURSOR 是类型:
T_CURSOR is type:
TYPE T_CURSOR IS REF CURSOR;
推荐答案
var r ref 游标;
var r ref cursor;
以上在语法上是不正确的.应该是 -
The above is syntactically incorrect. It should be -
var r refcursor
ref cursor 之间没有空格,是一个词,refcursor
.
There is not space between ref cursor, it is one word, refcursor
.
例如
SQL> create table t as select * from emp;
Table created.
SQL> var r refcursor
SQL>
SQL> begin
2 open :r for select * from t;
3 end;
4 /
PL/SQL procedure successfully completed.
SQL>
SQL> delete from t;
14 rows deleted.
SQL> commit;
Commit complete.
SQL>
SQL> print r
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7369 SMITH CLERK 7902 17-DEC-80 800
20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300
30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500
30
7566 JONES MANAGER 7839 02-APR-81 2975
20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400
30
7698 BLAKE MANAGER 7839 01-MAY-81 2850
30
7782 CLARK MANAGER 7839 09-JUN-81 2450
10
7788 SCOTT ANALYST 7566 09-DEC-82 3000
20
7839 KING PRESIDENT 17-NOV-81 5000
10
7844 TURNER SALESMAN 7698 08-SEP-81 1500
30
7876 ADAMS CLERK 7788 12-JAN-83 1100
20
7900 JAMES CLERK 7698 03-DEC-81 950
30
7902 FORD ANALYST 7566 03-DEC-81 3000
20
7934 MILLER CLERK 7782 23-JAN-82 1300
10
14 rows selected.
SQL>
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