在Oracle sql Developer代码窗口中使用变量运行SQL代码

Question

我正在使用Oracle SQL Developer编写代码。我有一个简单的select语句：

    SELECT
      CFS.CAE_SEC_ID,
      CFS.FM_SEC_CODE,
      CFS.LAST_USER_ID,
      case 
          when 1 = 1 then
            sl.usbank_to_edit
          else
            case 
              when 'ENT\CB174' = CFS.last_user_id then
                sl.owner_to_edit
              else
                sl.to_edit
            end
        end canEdit
    FROM
    CAEDBO.CAE_FOF_SECURITY CFS
    INNER JOIN caedbo.CAE_DATA_SET_ELEMENT CDSE_STAT 
        ON (CDSE_STAT.DATA_SET_ELEMENT_ID = CFS.APPR_STATUS)
    INNER JOIN caedbo.CAE_STATE_LOOKUP sl 
        ON (sl.object_state =  CDSE_STAT.data_set_element_id)
   where 
      cfs.CAE_SEC_ID in (3741, 3744, 3748, 3752);

但是，我想向其中添加一些变量，并引用语句中的变量，如下所示，并在代码窗口中运行它。我怎样才能正确地做到这一点？

DECLARE 
  p_USBank_n NUMBER;
  p_user_id_c VARCHAR2(20);
BEGIN  
  p_USBank_n := 1; 
  p_user_id_c := 'ENT\CB174';

    SELECT
      CFS.CAE_SEC_ID,
      CFS.FM_SEC_CODE,
      CFS.LAST_USER_ID,
      case 
          when p_USBank_n = 1 then
            sl.usbank_to_edit
          else
            case 
              when p_user_id_c = CFS.last_user_id then
                sl.owner_to_edit
              else
                sl.to_edit
            end
        end canEdit
    FROM
    CAEDBO.CAE_FOF_SECURITY CFS
    INNER JOIN caedbo.CAE_DATA_SET_ELEMENT CDSE_STAT 
        ON (CDSE_STAT.DATA_SET_ELEMENT_ID = CFS.APPR_STATUS)
    INNER JOIN caedbo.CAE_STATE_LOOKUP sl 
        ON (sl.object_state =  CDSE_STAT.data_set_element_id)
   where 
      cfs.CAE_SEC_ID in (3741, 3744, 3748, 3752);
END;

当我在sql窗口中运行它时，我得到以下消息：

Error report:
ORA-06550: line 8, column 5:
PLS-00428: an INTO clause is expected in this SELECT statement
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

Answer 1

如果我没看错的话，我想你是在找Oracle Substitution variables.

这将提示您每次输入值，通过使用&val它将提示您@ runtime

  SELECT
      CFS.CAE_SEC_ID,
      CFS.FM_SEC_CODE,
      CFS.LAST_USER_ID,
      CASE 
          when &p_USBank_n = 1 then
            sl.usbank_to_edit
          else
            CASE 
              when '&p_user_id_c' = CFS.last_user_id then
                sl.owner_to_edit
              else
                sl.to_edit
            end
        end canEdit
    FROM
    CAEDBO.CAE_FOF_SECURITY CFS
    INNER JOIN caedbo.CAE_DATA_SET_ELEMENT CDSE_STAT 
        ON (CDSE_STAT.DATA_SET_ELEMENT_ID = CFS.APPR_STATUS)
    INNER JOIN caedbo.CAE_STATE_LOOKUP sl 
        ON (sl.object_state =  CDSE_STAT.data_set_element_id)
   where 
      CFS.CAE_SEC_ID IN (3741, 3744, 3748, 3752);

将其更改为&&var以使其保留该值，然后使用

UNDEFINE var 

要清除它

现在，您可以通过使用定义来在页面顶部设置这些设置(从而避免提示

DEFINE XYZ = 5
DEFINE AAA = to_date('10/10/2010','mm/dd/rrrr')
DEFINE textString = AaBbCc

SELECT &&XYZ b, &&AAA a, '&&textString' textString
  from dual ;

  B                      A                         TEXTSTRING 
  ---------------------- ------------------------- ---------- 
  5                      10.OCT.2010 00:00         AaBbCc     
  --typing define will show you all the "defined" values 
define

  DEFINE XYZ = "5"
  DEFINE TEXTSTRING = "AaBbCc"
  DEFINE AAA = "to_date('10/10/2010','mm/dd/rrrr')"

双和号将“保留”该值，直到您取消定义它(参见上文)或重新定义它为止。

Answer 2

错误消息解释了这个问题；在PL/SQL块中，您必须选择INTO，并且不能像使用普通SQL那样将查询结果转储到屏幕上。(有一些方法可以做到这一点，但对于您在这里试图实现的目标来说，可能过于复杂了)。

如果你不想像@Harrison建议的那样使用替代变量，你可以使用在开始时在一个单独的匿名块中定义的绑定变量。然后，您可以在普通SQL中引用绑定变量：

var p_usbank_n number;
var p_user_id_c varchar2(20);

exec :p_usbank_n := 1;
exec :p_user_id_c := 'ENT\CB174';

select
    cfs.cae_sec_id,
    cfs.fm_sec_code,
    cfs.last_user_id,
    case 
        when 1 = :p_usbank_n then
            sl.usbank_to_edit
        when cfs.last_user_id = :p_user_id_c then
            sl.owner_to_edit
        else
            sl.to_edit
    end as canEdit
from
    caedbo.cae_fof_security cfs
inner join caedbo.cae_data_set_element cdse_stat 
    on (cdse_stat.data_set_element_id = cfs.appr_status)
inner join caedbo.cae_state_lookup sl 
    on (sl.object_state =  cdse_stat.data_set_element_id)
where 
    cfs.cae_sec_id in (3741, 3744, 3748, 3752);