Question

我尝试使用TBLUSERFINGER将数据从表1 TBLUSERFINGER_HORIZONTAL复制到新的表2 PL/SQL第二张表有不同的结构。

表1包含每10个总列数的USERID行数据= 6

我想要做的是以横向结构旋转此表，以便每个USERID在1中都有table行，而不是每行10行{1}} ...通过使用表2中的新结构，我将获得USERID列

表2中的主键为42 ...

我想知道如何使用 PL / SQL过程将数据从表1复制到表2？或者，如果有任何人有类似的情景想分享链接...我搜索一些senarious但我的我认为它需要IF声明或CASE声明。

表格结构

USERID

新的 Tabe 2 结构应该包含42列

SQL> desc TBLUSERFINGER;Name        Null?    Type          
----------- -------- ------------- 
ROW_ID               NUMBER        
USERID      NOT NULL NVARCHAR2(75) 
TEMPLATE             BLOB          
FINGERID    NOT NULL NVARCHAR2(20) 
ISLOCKED             NUMBER(3)     
ISDUPLICATE          NUMBER(3)     
SQL>

Answer 1

您可以使用Pivot选项。这最适合您的需求。希望在片段下方有所帮助。

--Table cretion for test
CREATE TABLE TABLE1
  (
    ROW_ID NUMBER,
    USERID VARCHAR2(75),
    TEMPLATE_DATA BLOB,
    FINGERID    VARCHAR2(20),
    ISLOCKED    NUMBER,
    ISDUPLICATE NUMBER(3)
  );

--Data insertion
INSERT INTO TABLE1
SELECT LEVEL ,
  CASE
    WHEN LEVEL < 11
    THEN 'AV_DUMMY'
    ELSE 'SR_DUMMY'
  END,
  UTL_RAW.CAST_TO_RAW('TEMPLATE_DATA'),
  LEVEL,
  CASE
    WHEN LEVEL < 11
    THEN 0
    ELSE 1
  END,
  CASE
    WHEN LEVEL < 11
    THEN 0
    ELSE 1
  END
FROM DUAL
  CONNECT BY LEVEL < 21;

--  Data modification as per requirement
UPDATE TABLE1
SET FINGERID   = SUBSTR(FINGERID,2,1)
WHERE FINGERID > 10;


CREATE TABLE TABLE2 AS
SELECT '1' ROW_ID,
  USERID,
  TEMPLATEDATA FINGERID_1_TEMP,
  FINGERID_1_FN FINGERID_1,
  ISLOCKED ISLOCKED_1,
  ISDUPLICATE ISDUPLICATE_1,
  TEMPLATEDATA FINGERID_2_TEMP,
  FINGERID_2_FN FINGERID_2,
  ISLOCKED ISLOCKED_2,
  ISDUPLICATE ISDUPLICATE_2,
  TEMPLATEDATA FINGERID_3_TEMP,
  FINGERID_3_FN FINGERID_3,
  ISLOCKED ISLOCKED_3,
  ISDUPLICATE ISDUPLICATE_3,
  TEMPLATEDATA FINGERID_4_TEMP,
  FINGERID_4_FN FINGERID_4,
  ISLOCKED ISLOCKED_4,
  ISDUPLICATE ISDUPLICATE_4,
  TEMPLATEDATA FINGERID_5_TEMP,
  FINGERID_5_FN FINGERID_5,
  ISLOCKED ISLOCKED_5,
  ISDUPLICATE ISDUPLICATE_5,
  TEMPLATEDATA FINGERID_6_TEMP,
  FINGERID_6_FN FINGERID_6,
  ISLOCKED ISLOCKED_6,
  ISDUPLICATE ISDUPLICATE_6,
  TEMPLATEDATA FINGERID_7_TEMP,
  FINGERID_7_FN FINGERID_7,
  ISLOCKED ISLOCKED_7,
  ISDUPLICATE ISDUPLICATE_7,
  TEMPLATEDATA FINGERID_8_TEMP,
  FINGERID_8_FN FINGERID_8,
  ISLOCKED ISLOCKED_8,
  ISDUPLICATE ISDUPLICATE_8,
  TEMPLATEDATA FINGERID_9_TEMP,
  FINGERID_9_FN FINGERID_9,
  ISLOCKED ISLOCKED_9,
  ISDUPLICATE ISDUPLICATE_9,
  TEMPLATEDATA FINGERID_10_TEMP,
  FINGERID_10_FN FINGERID_10,
  ISLOCKED ISLOCKED_10,
  ISDUPLICATE ISDUPLICATE_10
FROM
  (SELECT ROW_ID,
    USERID,
    FINGERID,
    ISLOCKED,
    ISDUPLICATE,
    UTL_RAW.CAST_TO_VARCHAR2(DBMS_LOB.SUBSTR(TEMPLATE_DATA)) TEMPLATEDATA
  FROM TABLE1
  ) PIVOT ( MAX(ROW_ID), MAX(FINGERID) FN FOR FINGERID IN (1 AS FINGERID_1,2 AS FINGERID_2,3 AS FINGERID_3,4 AS FINGERID_4,5 AS FINGERID_5,6 AS FINGERID_6,7 AS FINGERID_7,8 AS FINGERID_8,9 AS FINGERID_9,10 AS FINGERID_10) );

Answer 2

这是第一个获得想法的草案，BLOB字段需要跳出更多的箍。希望它有所帮助：

      DECLARE

          CURSOR FINGER_cur
          IS
               SELECT employee_id
                 FROM TBLUSERFINGER
             ORDER BY rowid ASC;

         l_FINGER   FINGER_cur%ROWTYPE;

         l_sql varchar2(4000); 
      BEGIN
         OPEN FINGER_cur;

         LOOP
            FETCH FINGER_cur INTO l_FINGER;
            EXIT WHEN FINGER_cur%NOTFOUND;
    if l_finger.ROWID  = 1 then 
    INSERT INTO TBLUSERFINGER_HORIZONTAL (FINGER_1_TEMPLATE,FINGERID_1,FINGER_1_ISLOCKED,FINGER_1_ISDUPLICATE)
    VALUES (l_finger.TEMPLATE,l_finger.FINGERID,l_finger.ISLOCKED,l_finger.ISDUPLICATE)
    WHERE USERID = l_finger.USERID;
    else

    l_sql := 'UPDATE TBLUSERFINGER_HORIZONTAL 
    SET FINGER_'|l_finger.ROWID|'_TEMPLATE = '''||l_finger.FINGER_TEMPLATE||''',
    FINGERID_'|l_finger.ROWID|' = '''|l_finger.FINGERID|''',
    FINGER_'||l_finger.ROWID||'_ISLOCKED = '||l_finger.ISLOCKED||',
    FINGER_'||l_finger.ROW_ID||'_ISDUPLICATE = '||l_finger.ISDUPLICATE||'
    WHERE USERID = '''||l_finger.USERID||''';';

    execute immediate l_sql;
   end if;


         END LOOP;

     CLOSE FINGER_cur;
  END;

如何使用PL / SQL将数据从一个表复制到另一个具有不同结构的表

2 个答案: