Strip special characters in emails

Similar Questions

• How to implement insert and put implement with special characters

  Hi all

  Scenario: I have a table and that is having e-mail column.

  condition:-my e-mail column should meet under the condition when the data is inserted.

  It should not allow any of the special characters ('@ ','.') and a ' @'.

  
  

  Thank you
  

  SQL> create table t
    2  (
    3    email varchar2(100) not null
    4  , constraint email_check check
    5                           (
    6                                 regexp_replace(email, '[@|.|[:alnum:]]') is null
    7                             and length(email) - length(replace(email, '@')) = 1
    8                           )
    9  );
  
  Table created.
  

  I used two conditions.

  1 regular expression to see if there is any character that is NOT @ or. or Digital Alpha.

  2 length check if @ is this several times.

  SQL> insert into t values ('[email protected]');
  
  1 row created.
  
  SQL> insert into t values ('karthick.p@@abcd.com');
  
  insert into t values ('karthick.p@@abcd.com')
  *
  ERROR at line 1:
  ORA-02290: check constraint (KARTHICK.EMAIL_CHECK) violated
  
  SQL> insert into t values ('[email protected]');
  
  insert into t values ('[email protected]')
  *
  ERROR at line 1:
  ORA-02290: check constraint (KARTHICK.EMAIL_CHECK) violated
  

• Special characters escaped HOWTO if you use regexp_replace and regexp_substr

  Hello experts,

  following test case

  insert into querytest1 (d) values

  ("#1 (170): [{'type': 'FACEBOOK', 'count': 0, 'Larry': 1382627403299}, {'type': 'GOOGLE', 'count': 0, 'Larry': 1381825285002}, {'type': 'EMAIL', 'count': 2, 'Larry': 1381826322925}] #2(0): #3 (5):-3141 #4 (5):-3141 #5 (5): 21804 #6: (7) 3890750 #7(3): s11'");

  Select regexp_replace (d, REGEXP_SUBSTR (REGEXP_SUBSTR (d, ' [^] +', 1, 1), "[^:] +' 1, 2"), ") of querytest1;

  ERROR on line 1:

  ORA-12726: unparalleled support in regular expression

  evidence that the characters special [] {} are the problem:

  delete from querytest1;

  commit;

  -Insert data without special characters

  insert into querytest1 (d) values (' #1 (170): 'type': 'FACEBOOK', 'count': 0, 'Larry': 1382627403299, 'type': 'GOOGLE', 'count': 0, 'Larry': 1381825285002, 'type': 'EMAIL', 'count': 2, 'Larry' [: 1381826322925] #2(0): #3 (5):-3141 #4 (5):-3141 #5 (5): 21804 #6: (7) 3890750 #7(3): s11');

  Select regexp_replace (d, REGEXP_SUBSTR (REGEXP_SUBSTR (d, ' [^] +', 1, 1), "[^:] +' 1, 2"), ") of querytest1;

  REGEXP_REPLACE (D, REGEXP_SUBSTR (REGEXP_SUBSTR(D,'[^]+',1,1),'[^:] +', 1, 2), ")

  --------------------------------------------------------------------------------------------------------------------

  [#1 (170): 'FACEBOOK', 'count': 0, 'Larry': 1382627403299,: 'GOOGLE', 'count': 0, 'Larry': 1381825285002,: 'EMAIL', 'count': 2, 'Larry': 1381826322925,: 'EMAIL', 'count': 2, "Lamarre": 1381826322925] #2(0): #3 (5):-3141 #4 (5):-3141 #5 (5): 21804 #6: (7) 3890750 #7 (3): s11

  so now it works because there is no characters [special])

  is there a way to escape them?

  Thank you in advance.

  Hello

  Since you are using Oracle 11.2, you can do it with a WITH recursive clause, like this:

  MERGE INTO dst t

  WITH THE HELP OF)

  MORPHING (q, result, n_to_do, start_pos, end_pos) AS

  (

  Q SELECT

  ,       d || ' ' AS a result

  REGEXP_COUNT (q

  , '#\d+\(\d+\):'

  ) AS n_to_do

  REGEXP_INSTR (q,

  , '#\d+\(\d+\):'

  1

  REGEXP_COUNT (q

  , '#\d+\(\d+\):'

  )

  ) AS start_pos

  LENGTH (q) AS end_pos

  T

  UNION ALL

  Q SELECT

  REPLACE (result

  , ':' || n_to_do | ' '

  , NVL (RTRIM (REGEXP_SUBSTR (SUBSTR (q, 1, end_pos))))

  , '#\d+\(\d+\):(.*)'

  start_pos

  1

  NULL

  1

  )

  )

  , 'NULL '.

  )

  ) AS a result

  , n_to_do - 1 AS n_to_do

  REGEXP_INSTR (q,

  , '#\d+\(\d+\):'

  1

  BIGGER (1

  , n_to_do - 1

  )

  ) AS start_pos

  REGEXP_INSTR (q,

  , '#\d+\(\d+\):'

  1

  n_to_do

  ) - 1 AS end_pos

  MORPHING

  WHERE n_to_do > 0

  )

  Q SELECT, result

  MORPHING

  WHERE n_to_do = 0

  ) CBC

  WE (dst.q = src.q)

  WHEN MATCHED THEN UPDATE

  SET dst.result = src.result

  ;

  You can have any number of rows in table t, but they must have a unique key.  I assumed q was unique, highest, but it can be a column or combination of columns.

  It works with any number of values.

  The character "#" can occur in the values, just that it does not part of the point of shells #-figures-leftparen-figures-rightparen-colon. If "#" occurs in this model, you can't simplify regular expressions, as John.

  The above solution was written for the table that you posted in response #6, where q contained values, and d was the formula with the holders of the place for values.  You seem that overthrew in your last message, you may need to reverse I used q and d.

  Whatever your problem, it seems to be a way very uncomfortable to solve.  You need to rethink your data model.  In particular, stroring data in delimited as q lists are a bad idea.  Relational databases work best when when each column contains a single value, not a list of any number of values.  It is so basic to the design of database he called first normal form.

  This would help a lot if post you more simple examples.  Instead of having 7 values, some close to 200 characters, you could show the problem just as well (better, in fact) with 3 or 4 values, no tha 10 don't characters each.

• Manages the entries of the user... of special characters and things

  I was wondering but in my case that I have to accept the entry of user in preparation for sending emails. APEX text box controls manage the entry so that any special characters or oracle commands are ignored so that they become plain text? If not, is there an easy way to handle this? In my case, I'm alittle concerned by the fact that I send the e-mail using PL/SQL, so he needs to not only check HTML but PL/SQL special characters special characters and escape characters in need.

  David,

  You're safe with just using a variable binding.

  See you soon,.

  Janet Tyson

• Problem with Demo_Mail package sending an attachment and special characters

  Hello
  
  I did use the Demo_Mail package with the example in the http://www.oracle.com/technology/sample_code/tech/pl_sql/htdocs/Utl_Smtp_Sample.html for many years on my 9i database.
  
  Recently, we have taken a form that depends on this package and quickly found that Asian characters were not correctly in the e-mail subject or body. When I changed the procedure by example, characters came through, however, attachments now appear in the body of the email as ascii.
  
  /*------------------------------------------------------start the email creation--------------------------------------------------------------------*/
  Conn: = demo_mail.begin_mail)
  sender = > from_name,.
  recipient = > to_name,.
  subject = > subject,.
  mime_type = > "text/plain; charset = utf8');
  
  () demo_mail.write_mb_text
  Conn = > conn,.
  message = > message | UTL_TCP. CRLF);
  
  If file1 is not null
  then
  () demo_mail2.begin_attachment
  Conn = > conn,.
  mime_type = > ' application/octet-stream. "
  Online = > FALSE,
  v_filename = > file1.
  transfer_enc = > 'base64');
  
  file_len: = dbms_lob.getlength (wire);
  modulo: = mod (file_len, TN);
  parts: = trunc(file_len / amt);
  
  
  / * (dbms_lob.read (wire, amt, filepos, buf); * /)
  
  
  While (counter < = pieces) LOOP
  
  DBMS_LOB. Read (wire, amt, filepos, buf);
  demo_mail.write_raw (conn, utl_encode.base64_encode (buf));
  filepos: = counter * TN + 1;
  counter: = counter + 1;
  
  END LOOP;
  
  / * Point on the rest of the data buffer * /.
  IF (modulo <>0) then
  DBMS_LOB. Read (wire, modulo, filepos, buf);
  demo_mail2.write_raw (conn, utl_encode.base64_encode (buf));
  end if;
  
  () demo_mail.end_attachment
  Conn = > conn);
  end if;
  
  () demo_mail.end_mail
  Conn = > conn);
  /*------------------------------------------------------end the email creation--------------------------------------------------------------------*/
  
  
  How can I have my cake and eat it too? Examples of scripts showing this scenario exist?
  
  In addition, even if I was able to get the body of the email to display special characters, the subject line still displays question marks instead of the special characters. I was never able to solve this problem.
  
  Any help to any of these questions is greatly appreciated!
  
  Thank you
  
  Kim

  You use the utl_encode.quoted_printable_encode before making all these changes? Most, if not all, of these accented characters must be converted to quoted printable form by the utl_encode.quoted_printable_encode function, then you only need to focus on the specific characters that must be encoded to the channel to cover additional expenditures for the mimeheader encoding. Specifically the white space characters should be encoded as well as the question mark.

  Also, I have done some minor testing and it seems that the quoted_printable_encode function folds the text when it exceeds a specific length. If I unfold the coded text object lines seem to come by fine. The folding text string is an equal sign followed by the sequence CRLF, unfold the text is a simple matter of these three characters. These changes becomes the encoding routine encapsulated in a function:

  create or replace function mimeheader_encode(
        p_str varchar2
      , p_charset varchar2 := 'UTF-8') return varchar2 is
    l_str varchar2(2000);
  begin
    l_str:=utl_raw.cast_to_varchar2(utl_encode.quoted_printable_encode(utl_raw.cast_to_raw(p_str)));
    l_str:=replace(l_str,'='||chr(13)||chr(10),''); --unfold the data
    l_str:=replace(l_str,'?','=3f'); --quote question marks
    l_str:=replace(l_str,' ','=20'); --quote spaces
    l_str:='=?'||p_charset||'?Q?'||l_str||'?='; -- add prefix and suffix
    return l_str;
  end;
  /
  

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