Point display XY graph using the cursor data

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• Why we use the cursor

  Hi all

  I would be grateful someone right me if I'm wrong. I ask the question below just for my purpose of learning.

  Question - Why do we use the cursor?

  Response Cursor is used to treat several lines in PL/SQL.

  Or

  Is used to treat a set of records from one or more tables, you can write a cursor on the table using select statement and then you can browse through all these a Recordset, and perform your required operations.

  Post edited by: Muzz, I'll open another discussion to my other question. Thank you

  Hello

  Muzz says:

  Hi all

  I would be grateful someone right me if I'm wrong. I ask the question below just for my purpose of learning.

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  Response

  When you want to run a series of DML statements then do like us and when we want to return a single value, then we use the function.

  Much has been written on this subject.  Start by finding some of them:

  https://www.Google.com/#q=when+use+procedure+function+Oracle

  read some of them and then ask a more specific question

  Procedures are not just for the DML; There are a lot of things in addition to DML you can do in the procedures.  For example, you can send e-mail messages, or can read and write files.

  The second half of your response, 'when we want to return a single value, then we use the function', is the right of bascally.  In particular, when you want to return a value that will be used in a SQL statement, you use a function.

  Functions in the pipeline are a special case.  A lot of what you read or you say about 'functions' means implicitly 'no Pipeline functions.

  Question - Why do we use the cursor?

  Response Cursor is used to treat several lines in PL/SQL.

  Or

  Is used to treat a set of records from one or more tables, you can write a cursor on the table using select statement and then you can browse through all these a Recordset, and perform your required operations.

  You'll have best results if you start a separate thread for each separate issue.  This issue is completely separate from the question on procedures

  You're right that the sliders are a way to process the rowsets, which can contain 1 line or several lines.

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  I tried the following example using the xml data type, but not the desired output.
  could you please correct the query in order to obtain the necessary
  

  CREATE TABLE TEST.EMP_DETAIL
  (
    EMPNO       NUMBER,
    ENAME       VARCHAR2(32 BYTE),
    EMPDETAILS  SYS.XMLTYPE
  )

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     (EMPNO, ENAME, EMPDETAILS)
   Values
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    <Emp Empid="1">
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      <DOJ>20092008</DOJ>
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    <Emp Empid="2">
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    </Emp>
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       a.empdetails.extract('//Dept/Emp/Empno/text()').getStringVal() AS "EMPNumber",
        a.empdetails.extract('//Dept/Emp/DOJ/text()').getStringVal() AS "DOJ",
        a.empdetails.extract('//Dept/Emp/Grade/text()').getStringVal() AS "Grade",
        a.empdetails.extract('//Dept/Emp/Sal/text()').getStringVal() AS "Salary",
        a.empdetails.extract('//Dept/Emp[@Empid="2"]').getStringVal() AS "ID",
        a.empdetails.extract('//Dept/Emp[EmpName="Coster"]').getStringVal() AS "CHK"
       FROM emp_detail a 
       where empno=7  
             AND a.empdetails.existsNode('//Dept/Emp[@Empid="2"]') =1

  Thank you...

  Karthick_Arp wrote:
  I'm not very good at that... But if your XML code should not be more like this

  SQL> Insert into EMP_DETAIL
  2     (EMPNO, ENAME, EMPDETAILS)
  3   Values
  4     (7, 'Martin', XMLTYPE('
  5    
  6      1
  7      Kevin
  8      50
  9      20092008
  10      E3
  11      3000
  12    
  .. cut ..
  

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