即使我使用 "table" 运算符也得到 "local collection types not allowed in SQL statements"

Question

我有一个过程，我正在尝试在 where 语句中使用一个集合。

 procedure purge_table is

    type t_ids is table of number;
    arr_ids    t_ids ;

   begin  
   select distinct (s.id) bulk collect
              into arr_ids    
        from students s;

   select count(*)
      into v_deleted_row_count
      from students s
      where s.id in (select * from table(arr_ids));

   end;

我得到 "local collection types are not allowed i SQL statements" 包含 where 语句的行。据我所知，我搜索了错误我的语法是正确的，但我不明白是什么 "Assuming that your collection is defined in SQL, not just in PL/SQL, you can use the TABLE operator " 在此处接受的答案中提到：Array in IN() clause oracle PLSQL.

这里也是接受的答案

https://dba.stackexchange.com/questions/141325/how-can-i-use-an-array-variable-inside-the-in-operator-for-oracle-sql

建议和我一样。

我想这一定与在SQL中定义一个集合有关。你能帮我吗？

Answer 1

类型应在 SQL 级别创建，然后在您的 PL/SQL 过程中使用。像这样（基于 Scott 的架构）：

SQL> set serveroutput on
SQL> create or replace type emp_tab as table of number;
  2  /

Type created.

SQL> create or replace procedure purge_table is
  2      arr_ids    emp_tab := emp_tab();
  3      v_deleted_row_Count number;
  4  begin
  5     select distinct (s.empno) bulk collect
  6       into arr_ids
  7       from emp s where deptno = 10;
  8
  9     select count(*)
 10        into v_deleted_row_count
 11        from emp s where s.empno in (select * from table(arr_ids));
 12
 13     dbms_output.put_line('Number = ' || v_deleted_row_count);
 14  end;
 15  /

Procedure created.

SQL> exec purge_table;
Number = 3

PL/SQL procedure successfully completed.

SQL>

即使我使用 "table" 运算符也得到 "local collection types not allowed in SQL statements"

Getting "local collection types not allowed in SQL statements" even though I use "table" operator

oracle

plsql

stored-procedures

plsqldeveloper