行列表的 SQL 存储过程数据类型

Question

What data type can I use to store all rows found by SELECT query?

CREATE OR REPLACE PROCEDURE handleFailedCalls(xNumber in varchar(10)) AS
result {DATA TYPE I WANT};
BEGIN
   select * into result
   from CALLS c1
   where c1.status = 'fail'
END
/

Answer 1

One way is to use a REFCURSOR variable of OUT type.

CREATE OR REPLACE PROCEDURE handleFailedCalls(xNumber in varchar2,
p_result OUT SYS_REFCURSOR
) AS
BEGIN
   OPEN p_result FOR select * from CALLS c1
   where c1.status = 'fail'
END
/

Also, use VARCHAR2 instead of VARCHAR . It should be without the size, as procedure arguments with size won't compile.

The procedure can be called to receive the cursor into a local ref cursor variable.

DECLARE
res_cur SYS_REFCURSOR;
BEGIN
    handleFailedCalls('Xnumber1', res_cur );
END;
/

Answer 2

Use BULK COLLECT , example:

 DECLARE TYPE emp_typ IS TABLE OF employees%ROWTYPE INDEX BY PLS_INTEGER; all_employees emp_typ; BEGIN SELECT * BULK COLLECT INTO all_employees FROM employees;

A SELECT ... BULK COLLECT INTO statement can return multiple rows. You must set up collection variables to hold the results. You can declare associative arrays or nested tables that grow as needed to hold the entire result set.