在插入语句Oracle中使用函数

Question

我有这种类型的功能：

 FUNCTION mfi_cust_details (vacid VARCHAR2)
      RETURN VARCHAR2
   IS
      vcustdetails   VARCHAR2 (300);
   BEGIN
      BEGIN
         SELECT    a.cust_title_code
                || ','
                || a.cust_id
                || ','
                || b.address_line1
                || ','
                || b.address_line2
                || ','
                || mfi_citycountry (b.country, b.city)
                || ','
                || b.zip
           INTO vcustdetails
           FROM tbaadm.cmg a, crmuser.address b
          WHERE TRIM (a.cif_id) = TRIM (b.orgkey)
            AND UPPER (b.addresscategory) IN ('MAILING', 'REGISTERED')
            AND cust_id IN (SELECT cust_id
                            FROM tbaadm.gam
                            WHERE acid = vacid);
      EXCEPTION
         WHEN NO_DATA_FOUND
         THEN
            vcustdetails :=
                    NULL
               || ','
               || NULL
               || ','
               || NULL
               || ','
               || NULL
               || ','
               || NULL
               || ','
               || NULL
               || ','
               || NULL;
      END;

      RETURN vcustdetails;
   END mfi_cust_details;

我需要将这些数据插入 table 例如：

insert into my_table values(mfi_cust_details(myacid),anotherFunction());

但是我的程序甚至没有编译错误：

 not enough values

我想做的事情是否可行？

编辑我的 table 定义

    create table my_table cust_title_code varchar2(10),
cust_id varchar2(10),
address1 varchar2(10),
address_2 varchar2(10),
city_code varchar2(5),
country_code varchar2(5),
zip_code varchar2(10));

Answer 1

您的函数被定义为返回一列 - 即字符串 "value, value, value" 等（或 "Null, null, null" 等）[ 尽管我看不到将所有空值插入 my_table 错误！]。插入失败，因为插入 table（没有指定的列列表）将默认插入所有列，按照 table 中定义的顺序，但由于您的函数返回一列，它失败了"not enough values".

看来您正试图在插入语句中制作多列 - 我不确定是否有办法做到这一点。

您可以将您的函数定义为 returns ROWTYPE 本质上代表 table:

中的一条记录

FUNCTION mfi_cust_details(vacid VARCHAR2) return my_table%ROWTYPE as 
  my_table%ROWTYPE vcustdetails;
BEGIN
  SELECT a.cust_title_code,
    a.cust_id,
    b.address_line1,
    b.address_line2,
    mfi_citycountry (b.country, b.city),
    b.zip
  INTO vcustdetails 
  FROM tbaadm.cmg a, crmuser.address b
            WHERE TRIM (a.cif_id) = TRIM (b.orgkey)
              AND UPPER (b.addresscategory) IN ('MAILING', 'REGISTERED')
              AND cust_id IN (SELECT cust_id
                              FROM tbaadm.gam
                              WHERE acid = vacid);  

  RETURN vcustdetails;
END;

但随后您需要在 PL/SQL 块（即 BEGIN/END ）内执行实际的插入语句。

declare 
  my_table%ROWTYPE rec;
begin

  rec := mfi_cust_details('id');

  insert into my_table( cust_title_code, cust_id, address1, address_2, city_code, country_code, zip_code) 
  values ( rec.cust_title_code, rec.cust_id, rec.address1, rec.address_2, rec.city_code, rec.country_code, rec.zip_code );

  -- don't forget to commit;

end;

在插入语句Oracle中使用函数

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