Question

我有一个保存在变量中的clob xml文件。我想获得每个员工的数据。

例如我的代码

DECLARE
  V_CLOB     CLOB;
  V_TEMP     VARCHAR2(4000);
BEGIN

With data as (
SELECT 
to_clob('<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
  <Employee_Info>
    <Employee>
        <Name>Masashi Okamura</Name>
        <Department>Design Department</Department>
        <Telephone>03-1452-4567</Telephone>
        <Email>okamura@xmltr.co.jp</Email>
        <Salary>3800</Salary>
    </Employee>
    <Employee>
        <Name>John Johnson</Name>
        <Department>Design Department</Department>
        <Telephone>03-1112-3517</Telephone>
        <Email>johnson@gmail.co.jp</Email>
        <Salary>4100</Salary>
    </Employee>
  </Employee_Info>
  <TOTAL>7900</TOTAL>
  <NO_OF_EMPLOYEES>2</NO_OF_EMPLOYEES>
</ROOT>') AS XML_FILE 
FROM DUAL)
SELECT *
INTO V_CLOB
FROM DATA;

--LOOP employee records and insert in a table

END;
/

我想第一次来

'    <Employee>
        <Name>Masashi Okamura</Name>
        <Department>Design Department</Department>
        <Telephone>03-1452-4567</Telephone>
        <Email>okamura@xmltr.co.jp</Email>
        <Salary>3800</Salary>
    </Employee>'

然后第二次

'    <Employee>
        <Name>John Johnson</Name>
        <Department>Design Department</Department>
        <Telephone>03-1112-3517</Telephone>
        <Email>johnson@gmail.co.jp</Email>
        <Salary>4100</Salary>
    </Employee>'

你能帮帮我吗？提前致谢

Answer 1

首先，我将使用XMLType而不是CLOB。如果你真的想使用clob，只需替换＆＃34; V_XML＆＃34;的每一个实例。在我的例子中使用＆＃34; XMLTYPE.createXML（V_CLOB）＆＃34;

我在这里使用SQL XML函数，因为我使用的不仅仅是PL / SQL XML函数，但有些人可能会有更好的答案使用它们。有关此主题的详细信息，请参阅the XML DB Developer's Guide。

DECLARE
  V_XML     XMLTYPE;
  V_EMP_COUNT NUMBER;
  V_QUERY   VARCHAR2(100);
  V_TEMP     VARCHAR2(4000);
BEGIN

With data as (
SELECT 
to_clob('<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
  <Employee_Info>
    <Employee>
        <Name>Masashi Okamura</Name>
        <Department>Design Department</Department>
        <Telephone>03-1452-4567</Telephone>
        <Email>okamura@xmltr.co.jp</Email>
        <Salary>3800</Salary>
    </Employee>
    <Employee>
        <Name>John Johnson</Name>
        <Department>Design Department</Department>
        <Telephone>03-1112-3517</Telephone>
        <Email>johnson@gmail.co.jp</Email>
        <Salary>4100</Salary>
    </Employee>
  </Employee_Info>
  <TOTAL>7900</TOTAL>
  <NO_OF_EMPLOYEES>2</NO_OF_EMPLOYEES>
</ROOT>') AS XML_FILE 
FROM DUAL)
SELECT XMLTYPE.createXML(XML_FILE)
INTO V_XML
FROM DATA;

select nvl(XMLQUERY('/ROOT/Employee_Info/count(Employee)' PASSING V_XML RETURNING CONTENT).getNumberVal(),0) 
  into V_EMP_COUNT from dual;

for i in 1..V_EMP_COUNT LOOP
  --LOOP employee records and insert in a table
  v_query := '/ROOT/Employee_Info/Employee['|| i || ']';
  SELECT xmlquery(v_query PASSING V_XML RETURNING CONTENT).getStringVal() into V_TEMP from dual;
  --insert into my_table (my_col) values (v_temp);
  dbms_output.put_line(v_temp);
END LOOP;

END;
/

Answer 2

您不需要PL / SQL - 可以使用XMLTABLE在SQL中完成：

SQL Fiddle

Oracle 11g R2架构设置：

CREATE TABLE data ( value XMLTYPE ) -- or CLOB instead of XMLTYPE
/

INSERT INTO data ( value )
SELECT Employee                     -- or t.Employee.getClobVal() if using a CLOB
FROM   XMLTABLE(
         '/ROOT/Employee_Info/Employee'
         PASSING XMLTYPE( '<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
  <Employee_Info>
    <Employee>
        <Name>Masashi Okamura</Name>
        <Department>Design Department</Department>
        <Telephone>03-1452-4567</Telephone>
        <Email>okamura@xmltr.co.jp</Email>
        <Salary>3800</Salary>
    </Employee>
    <Employee>
        <Name>John Johnson</Name>
        <Department>Design Department</Department>
        <Telephone>03-1112-3517</Telephone>
        <Email>johnson@gmail.co.jp</Email>
        <Salary>4100</Salary>
    </Employee>
  </Employee_Info>
  <TOTAL>7900</TOTAL>
  <NO_OF_EMPLOYEES>2</NO_OF_EMPLOYEES>
</ROOT>' )
         COLUMNS Employee XMLTYPE PATH '.'
       ) t
/

查询1 ：

SELECT d.value.getClobVal()
FROM   DATA d

<强> Results ：

|                          D.VALUE.GETCLOBVAL() |
|-----------------------------------------------|
| <Employee>                                    |
|   <Name>Masashi Okamura</Name>                |
|   <Department>Design Department</Department>  |
|   <Telephone>03-1452-4567</Telephone>         |
|   <Email>okamura@xmltr.co.jp</Email>          |
|   <Salary>3800</Salary>                       |
| </Employee>                                   |
|-----------------------------------------------|
| <Employee>                                    |
|   <Name>John Johnson</Name>                   |
|   <Department>Design Department</Department>  |
|   <Telephone>03-1112-3517</Telephone>         |
|   <Email>johnson@gmail.co.jp</Email>          |
|   <Salary>4100</Salary>                       |
| </Employee>                                   |

从xml获取特定值

2 个答案: