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Send an Oracle Database Table Data in Excel File as Mail Attachment using a Simple PL/SQL Excel & APEX Mail APIs

  

Here I am giving an example to send an oracle database table data in excel sheet as mail attachment using a simple PL/SQL & APEX Mail APIs.

What is ORA_EXCEL?

Oracle PL/SQL to Excel XSLX API.

ORA_EXCEL (Oracle Excel) is a PL/SQL package for Oracle database that produces Excel XLSX documents.

ORA_EXCEL enables developers to create Excel reports or export data from an Oracle database to Excel files using a simple PL/SQL Excel API.

Step 1: Download ORA_EXCEL pkg (wrapped pkg) and Install it in your schema.

Click here to Download ORA_EXCEL

Step 2: Create a new procedure as below, which should take care of following actions,
  •  Convert table data into excel file.
  •  Save generated excel file to PL/SQL BLOB variable type or Oracle Directory.
  •  Send generated excel file as an attachment.
CREATE OR REPLACE 
PROCEDURE table_data_to_excel_file(x_return_status out VARCHAR2,
                                    x_return_message out VARCHAR2)
AS
  CURSOR cur_emp_data
  IS
    SELECT emp.empno,
           emp.ename,
           emp.JOB,
           dept.dname department,
           dept.loc location,
           mgr.ename manager,
           emp.hiredate,
           nvl(emp.sal,0) salary,
           nvl(emp.comm,0) commission
      FROM emp emp,
           dept dept,
           emp mgr
     WHERE emp.deptno = dept.deptno
       AND emp.mgr      = mgr.empno (+)
    ORDER BY emp.ename ASC;

   l_from          VARCHAR2(100) := 'fyi@yourorganization.com';
   l_to            VARCHAR2(100) := 'pmo_desk@yourorganization.com';
   l_body          CLOB;
   l_body_html     CLOB;
   l_attach_mime   VARCHAR2(200) := 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
   l_generated_file  BLOB;
   l_id            VARCHAR2(200);
BEGIN
  x_return_status := 'S'; 
  x_return_message := 'Process Completed';
  
  /* Set up Header */
  
  ora_excel.new_document;
  ora_excel.add_sheet('Employee Details');
  ora_excel.add_row;
  ora_excel.add_style(style_name => 'header_style', border => TRUE, border_style => 'thin', border_color => 'ffffff', vertical_align => 'middle', horizontal_align => 'center', font_name => 'Tahoma', font_size => 10, wrap_text => TRUE, color => 'ffffff', bg_color => '00008B');
  ora_excel.add_style(style_name => 'data_style', border => TRUE, border_style => 'thin', border_color => '000000', vertical_align => 'middle',font_name => 'Tahoma', font_size => 10, wrap_text => FALSE );
  ora_excel.set_cell_value('A', 'Emp. No.');
  ora_excel.set_column_width('A', 20);
  ora_excel.set_cell_style('A', 'header_style');
  ora_excel.set_cell_align_left('A');
  ora_excel.set_cell_value('B', 'Emp. Name');
  ora_excel.set_column_width('B', 20);
  ora_excel.set_cell_style('B', 'header_style');
  ora_excel.set_cell_align_left('B');
  ora_excel.set_cell_value('C', 'Job');
  ora_excel.set_column_width('C', 20);
  ora_excel.set_cell_style('C', 'header_style');
  ora_excel.set_cell_align_left('C');
  ora_excel.set_cell_value('D', 'Department');
  ora_excel.set_column_width('D', 20);
  ora_excel.set_cell_style('D', 'header_style');
  ora_excel.set_cell_align_left('D');
  ora_excel.set_cell_value('E', 'Location');
  ora_excel.set_column_width('E', 20);
  ora_excel.set_cell_style('E', 'header_style');
  ora_excel.set_cell_align_left('E');
  ora_excel.set_cell_value('F', 'Manager');
  ora_excel.set_column_width('F', 20);
  ora_excel.set_cell_style('F', 'header_style');
  ora_excel.set_cell_align_left('F');
  ora_excel.set_cell_value('G', 'Hiredate');
  ora_excel.set_column_width('G', 20);
  ora_excel.set_cell_style('G', 'header_style');
  ora_excel.set_cell_align_right('G');
  ora_excel.set_cell_value('H', 'Salary');
  ora_excel.set_column_width('H', 20);
  ora_excel.set_cell_style('H', 'header_style');
  ora_excel.set_cell_align_right('H');
  ora_excel.set_cell_value('I', 'Commission');
  ora_excel.set_column_width('I', 20);
  ora_excel.set_cell_style('I', 'header_style');
  ora_excel.set_cell_align_right('I');
  
  /* Construct data for each rows */
  
  FOR emp_data IN cur_emp_data
  loop
    ora_excel.add_row;
    ora_excel.set_cell_value('A', emp_data.empno);
    ora_excel.set_cell_style('A', 'data_style');
    ora_excel.set_cell_value('B', emp_data.ename);
    ora_excel.set_cell_style('B', 'data_style');
    ora_excel.set_cell_value('C', emp_data.JOB);
    ora_excel.set_cell_style('C', 'data_style');
    ora_excel.set_cell_value('D', emp_data.department);
    ora_excel.set_cell_style('D', 'data_style');
    ora_excel.set_cell_value('E', emp_data.LOCATION);
    ora_excel.set_cell_style('E', 'data_style');
    ora_excel.set_cell_value('F', emp_data.manager);
    ora_excel.set_cell_style('F', 'data_style');
    ora_excel.set_cell_value('G', emp_data.hiredate);
    ora_excel.set_cell_style('G', 'data_style');
    ora_excel.set_cell_value('H', emp_data.salary);
    ora_excel.set_cell_style('H', 'data_style');
    ora_excel.set_cell_value('I', emp_data.commission);
    ora_excel.set_cell_style('I', 'data_style');
  END loop;
  
  /* Store generated file into plsql blob variable */
  
  ora_excel.save_to_blob(l_generated_file);
  
    l_body      := 'to view the content of this message, please use an html enabled mail client.' || utl_tcp.crlf;
    l_body_html := '<html><head>               
                    <style type="text/css">                
                    body{font-family: tahoma, arial, helvetica, sans-serif;                
                    font-size:10pt;                
                    color:#002060;                
                    margin:30px;                
                    background-color:#ffffff;}                
                    span.sig{font-style:italic;                
                    font-weight:bold;                
                    color:#811919;}</style></head>                
                    <body>Hi,<br/><br/>Please find attached. Kindly review it and do the necessary action (if required).</p>'
                    ||'<br/><span style= font-size:10px;>Note: This is a system generated email, do not reply to this.</span><br/></body></html>';
    
    /* Send mail with generated file */
    
    l_id := apex_mail.send(p_to        => l_to,
                           p_from      => l_from,
                           p_subj      => 'Employee Details ['||to_date(SYSDATE,'DD-Mon-RRRR')||']',
                           p_body      => l_body,
                           p_body_html => l_body_html);
    
            apex_mail.add_attachment(p_mail_id    => l_id,
                                     p_attachment => l_generated_file,
                                     p_filename   => 'Employee Details.xlsx',
                                     p_mime_type  => l_attach_mime);
            
            apex_mail.push_queue();   
     
exception WHEN others THEN
x_return_status  := 'E';
x_return_message :='Error - '||substr(1,100,sqlerrm);
END table_data_to_excel_file;

Step 3: Execute a procedure table_data_to_excel_file.

DECLARE
  x_return_status  VARCHAR2(200);
  x_return_message VARCHAR2(200);
BEGIN
  table_data_to_excel_file( x_return_status => x_return_status, 
                             x_return_message => x_return_message );
  
  dbms_output.put_line('X_RETURN_STATUS = ' || x_return_status);
  dbms_output.put_line('X_RETURN_MESSAGE = ' || x_return_message);
END;

You will get a nice mail with attachment as below,

Description:


ORA_EXCEL.new_document: Create new Excel document
ORA_EXCEL.add_sheet: Add sheet to current document
ORA_EXCEL.add_row: Add row to current sheet
ORA_EXCEL.set_cell_value: Set cell value with string value type
ORA_EXCEL.set_column_width: Set column width
ORA_EXCEL.set_cell_style: Set cell style
ORA_EXCEL.add_style: Create cell formatting style; may be applied to multiple cells.
ORA_EXCEL.set_cell_align_right: Align text Right
ORA_EXCEL.set_cell_align_left: Align text left
ORA_EXCEL.save_to_blob: Save generated Excel document to PL/SQL BLOB variable type.

APEX_MAIL.send: Send an outbound email message from an Oracle Application Express application
APEX_MAIL.add_attachment: Send an outbound email message from an Oracle Application Express application as an attachment
APEX_MAIL.push_queue: Deliver mail messages stored in APEX_MAIL_QUEUE.

Limitation: You can process up-to 1000 rows when you are using free version of ORA_EXCEL API. If you wish to process more rows then you need to get a license, for which you need to pay.

That's it.

Happy APEXing!!!...

Reference:

Comments

  1. Amit11 March 2021 at 08:16

    The google drive link is not opening. Can you fix it

    ReplyDelete
  2. Rathish Kumar22 October 2021 at 03:02

    Is ora_excel requires license? I am unable to access google drive to download ORA_EXCEL API

    ReplyDelete
    Replies
    1. Karkuvelraja Thangamariappan17 March 2022 at 05:34

      The file which I uploaded is FREE version. Kindly try now.

      Delete
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    hello the download link is not working, can you send it to me please

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