如何在SELECT INTO语句中使用数字表

问题描述

我想将表OS_CW.CW_FELDDATEN属性的PRIMITIVUMNUMMER(NOT NULL NUMBER(38))与本地数组v_list_pNummber中的值进行比较.这是我到目前为止的内容:

I'd like to compare the PRIMITIVUMNUMMER (NOT NULL NUMBER(38)) of table OS_CW.CW_FELDDATEN attribute with the values in a local array, v_list_pNummber. This is what I have so far:

DECLARE
    TYPE array_of_numbers IS TABLE OF NUMBER INDEX BY BINARY_INTEGER;
    v_list_parentID     array_of_numbers;
    v_list_pNummer      array_of_numbers;
BEGIN
    SELECT DBUID BULK COLLECT INTO v_list_parentID
    FROM OS_SYS.V_CATALOG
    WHERE PARENTID = 1;

    SELECT PRIMITIVUMNUMMER BULK COLLECT INTO v_list_pNummer
    FROM OS_CW.CW_FELDDATEN
    WHERE KATALOG IN (v_list_parentID);
END;

运行上面的代码时，出现此错误:

When running the code above I get this error:

如何比较列(数字)和表NUMBER INDEX BY BINARY_INTEGER?

How can I compare a column (number) with a table NUMBER INDEX BY BINARY_INTEGER?

谢谢！

推荐答案

SQL无法使用在本地PL/SQL范围内声明的类型.您需要在SQL (*)中定义它:

SQL cannot use types declared in local PL/SQL scope. You need to define it in SQL (*):

SQL> create TYPE array_of_numbers IS TABLE OF NUMBER ;
  2  /

Type created.

SQL>

然后使用TABLE()运算符将第一个集合转换为可以使用IN运算符引用的子查询:

Then use the TABLE() operator to convert the first collection into a sub-query you can reference with the IN operator:

SQL> set serveroutput on
SQL> declare
  2      v_list_parentID array_of_numbers;
  3      v_list_pNummer array_of_numbers;
  4  begin
  5      select dbuid bulk collect into v_list_parentID
  6          from v_catalog
  7          where parentid = 1;
  8      dbms_output.put_line('v_list_parentID count = ' || v_list_parentID.count());
  9
 10      select primitivumnummer bulk collect into v_list_pNummer
 11          from cw_felddaten
 12          where katalog in (select * from table( v_list_parentID));
 13
 14      dbms_output.put_line('v_list_pNummer count = ' || v_list_pNummer.count());
 15  end;
 16  /
v_list_parentID count = 4
v_list_pNummer count = 24

PL/SQL procedure successfully completed.

SQL>

MEMBER OF语法也适用.如果CW_FELDDATEN的行很多，它的键入较少，但性能可能不如TABLE()运算符.

The MEMBER OF syntax works too. It's less typing but may not perform as well as the TABLE() operator if CW_FELDDATEN has a lot of rows.

SQL> declare
  2      v_list_parentID array_of_numbers;
  3      v_list_pNummer array_of_numbers;
  4  begin
  5      select dbuid bulk collect into v_list_parentID
  6          from v_catalog
  7          where parent_id = 1;
  8      dbms_output.put_line('v_list_parentID count = ' || v_list_parentID.count());
  9
 10      select primitivumnummer bulk collect into v_list_pnummer
 11          from cw_felddaten
 12          where katalog member of v_list_parentID;
 13
 14      dbms_output.put_line('v_list_pNummer count = ' || v_list_pNummer.count());
 15  end;
 16  /
v_list_parentID count = 4
v_list_pNummer count = 24

PL/SQL procedure successfully completed.

SQL>

(*)在12c中，我们可以使用在SQL的包规范中声明的类型.

(*) In 12c we can use types declared in a package spec in SQL.

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