Problem with regexp_substr if the string with null values between commas.

Similar Questions

• Script to generate XML files... problem with null values

  Hello everyone,
  
  I come here with a question that troubled me for some time. I have a script which I run in SQLPLUS every now and then to generate an XML file.
  
  Problem is that the data that must be in XML format are not allways <>NULL and I need to hide empty tags < / tag >.
  
  I'll post my script below and if you could help me with it, it would be really great!
  
  Thanks for reading!
  

  set long 20000000
  set long 20000000
  set linesize 32000
  SET ECHO OFF
  SET TRIMSPOOL on
  SET HEADING OFF
  SET PAGESIZE 50000
  SET VERIFY OFF
  SET FEEDBACK OFF
  SET TERMOUT OFF
  spool C:\test.xml
  set serveroutput on
  begin
    dbms_output.put_line('<?xml version="1.0" encoding="utf-8" ?>');
  end;
  /
  SELECT
  XMLELEMENT("ReportRoot",XMLATTRIBUTES('http://www.w3.org/2001/XMLSchema-instance' as "xmlns:xsi", 'http://www.w3.org/2001/XMLSchema' as "xmlns:xsd" , '1.0' as "Version",sysdate as "CreationDate",to_char(sysdate,'hh:mm:ss') as "CreationTime",'1524544845' as "id"),
  XMLELEMENT("Porocila",XMLELEMENT("JOLY",(SELECT XMLAGG (XMLELEMENT("RefNrReport",replace('SON'||to_char(ref_ST,'00000'),' ',''))) from access_table_2 where ref_ST = &1),
  XMLELEMENT("ReportDate",sysdate),XMLELEMENT("Labeling",'545254450'),
   (SELECT XMLAGG     (XMLELEMENT("Reportf",
                                                                   XMLELEMENT("access",access),
                                                                   XMLELEMENT("date",date),
                                                                   XMLELEMENT("datep",datep),
                                                                   XMLELEMENT("ModificationInfo",'M'),XMLELEMENT("ModificationReason",modireason)))
                                               from v_xml_test where id_dok = &1 and ind_print = '1'))))
    .extract('/*')
    from dual
       /     
       spool off
  /
  exit

  Now lets pretend that

  XMLELEMENT("datep",datep),

  sometimes is NULL and I don't want to see it.

  Now lets pretend that

  XMLELEMENT("datep",datep),
  

  sometimes is NULL and I don't want to see it.

  XMLForest that does exactly:

  XMLForest(datep as "datep")
  

  (internally, it is equivalent to what Alex has suggested)

• How to display the line empty as a line with null values

  Hi all
  
  Pls advise me if it is possible to use a single query statement to display
  Empty row (i.e. not a single return line) as a line with null values.
  
  For example,.
  
  Select the names of names_mst whose name = "sgasfgs".
  
  Result:
  Names of
  =====
  < null >

  Hello
  If you desire to join external to double, as shown below, you still get at least a line of production

  SELECT  nm.names
  FROM            dual
  LEFT OUTER JOIN names_mst   nm  ON nm.name='sgasfgs';
  

• Remove data with null value

  Hello

  I'm using Oracle 11 g. I have a table with an id of 3, node, the value column. Combination of the column id and node, that must be taken account for deletion on the registers.

  Here, I need to delete lines with the NULL value in the value column. If for a combination of id and node with non-null values, then I need to delete rows with a null value for this combination.

  If the combination of id, node is not null value then this records should not delete.

  Below table, I need to remove the second row, for which is a value not zero VOICE CAL '10' is there, so I need to delete the row with null values. (VOICE, CAL, NULL)

  Network, FL, there is no value is non-null then I should NOT delete this line.

  This table is to have 100 s of this association, we can delete data in a single delete query?

  Or how I can delete rows with nulls for this combination.

  Tab1

  VALUE OF THE NŒUD ID

  VOICE CAL 10
  VOICE CAL NULL
  NETWORK NULL FL

  Thank you

  Hello

  oradba11 wrote:

  Hello

  I'm using Oracle 11 g. I have a table with an id of 3, node, the value column. Combination of the column id and node, that must be taken account for deletion on the registers.

  Here, I need to delete lines with the NULL value in the value column. If for a combination of id and node with non-null values, then I need to delete rows with a null value for this combination.

  If the combination of id, node is not null value then this records should not delete.

  Below table, I need to remove the second row, for which is a value not zero VOICE CAL '10' is there, so I need to delete the row with null values. (VOICE, CAL, NULL)

  Network, FL, there is no value is non-null then I should NOT delete this line.

  This table is to have 100 s of this association, we can delete data in a single delete query?

  Or how I can delete rows with nulls for this combination.

  Tab1

  VALUE OF THE NŒUD ID

  VOICE CAL 10
  VOICE CAL NULL
  NETWORK NULL FL

  Thank you

  You can do this in a single DELETE statement (it is not a request), using an EXISTS or IN the subquery.  For example:

  REMOVE table_x m

  WHERE the value IS NULL

  AND THERE ARE)

  SELECT 0

  FROM table_x s

  WHERE s.id = m.id

  AND s.node = m.node

  AND s.value IS NOT NULL

  )

  ;

  If you would care to post CREATE TABLE and INSERT instructions for the sample data, and then I could test it.

• I have a problem with synchronize them between (summary) video and slides in IPADs, HTML5. Please, help me!

  I have a problem with synchronize them between (summary) video and slides in IPADs, HTML5. Please, help me!

  I have an idea, I think that what's happening is the fact that the video is not charged, it cannot find the video, he goes to the last downloaded part.

• dealing with null values

  HI people
  
  req1:
  It may be a specific difference between "not" and "does not exist".
  which is the best 'there is no' or 'no', when it nulls.i.e If the subquery contains NULL values.
  
  I hope you people understand my question
  
  
  Thanks in advance
  
  Published by: newbie on February 18, 2011 03:52

  This can be useful
  http://asktom.Oracle.com/pls/asktom/f?p=100:11:3607896341573320:P11_QUESTION_ID:442029737684

• REGEXP_SUBSTR for the list delimited by commas with null values

  Hello
  
  I have a column that stores a list of values comma-delimited. Some of these values in the list may be null. I'm having some trouble trying to extract the values using the REGEXP_SUBSTR function when null values are present. Here are two things I've tried:

  SELECT
     REGEXP_SUBSTR (val, '[^,]*', 1, 1) pos1
    ,REGEXP_SUBSTR (val, '[^,]*', 1, 2) pos2
    ,REGEXP_SUBSTR (val, '[^,]*', 1, 3) pos3
    ,REGEXP_SUBSTR (val, '[^,]*', 1, 4) pos4
    ,REGEXP_SUBSTR (val, '[^,]*', 1, 5) pos5
  FROM (SELECT 'AAA,BBB,,DDD,,FFF' val FROM dual);
  
  POS P POS P P
  --- - --- - -
  AAA   BBB

  SELECT
     REGEXP_SUBSTR (val, '[^,]+', 1, 1) pos1
    ,REGEXP_SUBSTR (val, '[^,]+', 1, 2) pos2
    ,REGEXP_SUBSTR (val, '[^,]+', 1, 3) pos3
    ,REGEXP_SUBSTR (val, '[^,]+', 1, 4) pos4
    ,REGEXP_SUBSTR (val, '[^,]+', 1, 5) pos5
  FROM (SELECT 'AAA,BBB,,DDD,,FFF' val FROM dual);
  
  POS POS POS POS P
  --- --- --- --- -
  AAA BBB DDD FFF

  As you can see that neither calls work correctly. Anyone know how to change the regular expression pattern to handle null values? I tried various other models but could not get anyone to work in all cases.
  
  Thank you
  
  Martin
  -----
  http://www.ClariFit.com
  http://www.TalkApex.com

  Hi, Martin,.

  That's what you want:

  SELECT
     RTRIM (REGEXP_SUBSTR (val, '[^,]*,', 1, 1), ',') pos1
    ,RTRIM (REGEXP_SUBSTR (val, '[^,]*,', 1, 2), ',') pos2
    ,RTRIM (REGEXP_SUBSTR (val, '[^,]*,', 1, 3), ',') pos3
    ,RTRIM (REGEXP_SUBSTR (val, '[^,]*,', 1, 4), ',') pos4
    ,RTRIM (REGEXP_SUBSTR (val || ','
                        , '[^,]*,', 1, 5), ',') pos5
  FROM (SELECT 'AAA,BBB,,DDD,,FFF' val FROM dual);
  

  The query above works in Oracle 10 or 11, but in Oracle 11, you can also do it with only REGEXP_SUBSTR, without using RTRIM:

  SELECT
     REGEXP_SUBSTR (val, '([^,]*),|$', 1, 1, NULL, 1) pos1
    ,REGEXP_SUBSTR (val, '([^,]*),|$', 1, 2, NULL, 1) pos2
    ,REGEXP_SUBSTR (val, '([^,]*),|$', 1, 3, NULL, 1) pos3
    ,REGEXP_SUBSTR (val, '([^,]*),|$', 1, 4, NULL, 1) pos4
    ,REGEXP_SUBSTR (val, '([^,]*),|$', 1, 5, NULL, 1) pos5
  FROM (SELECT 'AAA,BBB,,DDD,,FFF' val FROM dual);
  

  The problem with your first request was that he was looking for sub channels of 0 or more non-virgules. There was as a substring. consisting of 3 characters starting at position 1, he returned "AAA", as expected. Then there was an another substring, the 0 characters, starting at position 4, so it returned NULL. Then, there was a substring of 3 characters starting at position 5, so he returned 'BBB '.

  The problem with your 2nd request was that he was looking for 1 or more non-virgules. 'DDD' is the 3rd this substring.

  Published by: Frank Kulash, on February 16, 2012 11:36
  Added Oracle 11 example

• NPE for rows with null values in the table of the adv

  I created the table adv, 2 columns, equipped with two text fields. Initially the col2 is empty,
  say that the structure is as follows:

                col1          col2
  Hdr         Question    Answer
  row1       abc           zxc
  row2       pdd           null (user doesnt enter anything)
  row3       zxc            lkj
  
  APPLYBUTTON

  When the user clicks on apply button I want to update these values in the table.
  
  I don't know how to do that, but that's what I'm trying to do. Please guide me the right way if its wrong.
  
  in LICS, I took the APPLYBUTTON action, got all lines of the object corresponding to the view, consulted with everyrow and I'm checking if there are values in the fields in the table, if the value zero, are simply print null. (we would not update on this line). . I could get o the part update, due to null pointer exception
  I get on the row line null pointer exception [1].getAttribute("Answer") for row2, it prints the value of row1 however.
  
  Here is the code I wrote:
  Set of rows from the rowset = (RowSet) vo.getRowSet ();
  Rank rank [] = vo.getAllRowsInRange ();
  System.out.println ("row.length" + row.length);
  for (int i = 0; i < row.length; i ++) {}
  String question = row.getAttribute("Question").toString ();
  String response = row [i].getAttribute("Answer").toString ();
  If (question! = null & &!("".)) Equals (question. Trim()))
  {
  System.out.println ("Question line" + i + "-" + question);
  }
  on the other
  {
  System.out.println ("Question line" + i + "is null");
  }
  
  If (response! = null & &!("".)) Equals (Answer.Trim ()))
  {
  System.out.println ("Response line" + i + "-" + response);
  }
  on the other
  {
  System.out.println ("Response line" + i + "is null");
  }
  
  Why the NPE survey code, I'm checking for null value and you want to print the value null in the logfile... I can not to getAttribute() on the null field, why can not just give me null in the variable I'm assigning to?
  
  You can guide me what approach to take, if it is not correct.
  I must examine DataDictionary and collect data there?
  Thanks in advance.

  Hello

  handle the exception of null on these two statements like this pointer

  String question = "";
  String response = "";

  Try
  {
  question = row.getAttribute("Question").toString ();
  }
  catch (NullPointerException e)
  {
  question = "";
  }

  Try
  {
  answer = row.getAttribute("Answer").toString ();
  }
  catch (NullPointerException e)
  {
  response = "";
  }

  Si ( !("". Equals (question. Trim()))
  {
  System.out.println ("Question line" + i + "-" + question);
  }
  on the other
  {
  System.out.println ("Question line" + i + "is null");
  }

  Si ( !("". Equals (Answer.Trim ()))
  {
  System.out.println ("Response line" + i + "-" + response);
  }
  on the other
  {
  System.out.println ("Response line" + i + "is null");
  }

  Thank you
  Gerard

• Alter the State of Session? -Apex form publishes text with null value

  Recently I discovered a problem with our Apex facility in which all selected as source for a text field value will eventually be displayed as a null value in the database.
  We run APEX version 3.2 in an Oracle 10.2.0.4 database using Oracle HTTP Server from 10 g companion disc.
  
  At first glance, everything seems to work as expected; I created a simple table called "oracle_sr" with 2 columns, as both not null:
  
  SQL > desc capacity.oracle_sr
  Name Null? Type
  ORACLE_SR_ID NOT NULL NUMBER
  TIMESTAMP NOT NULL DATE
  
  In APEX, the form wizard has been used to create a form on this table.
  After execution of the pages and you enter a value for the timestamp field, I can create folders without problem.
  
  The question arises when I choose a source for the timestamp field value.
  All the source options causes the same error (including a static value) so I'll focus on the SQL query to the source as:
  
  Select sysdate double;
  
  This should replace the date system in the area of text timestamp when the page is executed.
  As expected, the value appears in the text box, but when I submit the form to create the folder I get the error:
  
  ORA-01400: cannot insert NULL into ('ABILITY'. "" "" ORACLE_SR '. "" TIMESTAMP")
  
  I have worked with APEX for quite awhile and have successfully used this technique in many applications but just to begin to see this error in recent days. What's particularly odd about this message is by default postings "not null" created by the form wizard sees timestamp class as having a value. Session state information included below reports a value yet the database is to launch the ORA-01400.
  
  Someone has a similar problem? I have spent a good amount of time to try looking for this problem but can't seem to find any similar messages.
  
  I have included the release of my test page, debugging from what I see, it seems to be a value associated with the filed timestamp:
  
  0.00: a C C E P t: request = "CRΘER."
  0.00: metadata: go look up the definition and application shortcuts
  0.00: NLS: wwv_flow.g_flow_language_derived_from = FLOW_PRIMARY_LANGUAGE: wwv_flow.g_browser_language = en - us
  0.00: alter session set nls_language = "AMERICAN."
  0.00: alter session set nls_territory = 'AMERICA '.
  0.00: NLS: CSV charset = WE8MSWIN1252
  0.00:... "NLS: decimal separator Set =". »
  0.00:... NLS: Set NLS Group separator = ",".
  0.00:... NLS: Date Format Set = "DD-MON-RR.
  0.01:... Setting session time_zone in-06: 00
  0.01: setting NLS_DATE_FORMAT application date format: DD-MON-RR
  0.01:... NLS: Date Format Set = "DD-MON-RR.
  0.01: fetch database session state
  0.01:... Check the owner of the 2303701116904676 session
  0.01: setting NLS_DATE_FORMAT application date format: DD-MON-RR
  0.02:... NLS: Date Format Set = "DD-MON-RR.
  0.02:... Check for expiration of the session:
  0.02:... Metadata: Page Fetch, calculation, process and branch
  0.02: session: extract information from session header
  0.02:... Metadata: Retrieve the attributes of the page for application 109, page 50
  0.02:... Validate page affinity point.
  0.02:... Check off the items hidden_protected.
  0.03:... Check authorization security systems
  0.03: session state: Save elements of form and p_arg_values
  0.03: *... Session state: you save newValue of the object "P50_ORACLE_SR_ID" = "" "escape_on_input ="N"* 0.03: *..." " Session state: you save the object "P50_TIMESTAMP" = newValue ' 26 May 09 "" escape_on_input = "N" * ""»
  0.03:... Session state: Save "P0_CURRENT_PERSONNEL_ID" - registration of same value: "1."
  0.03:... Session state: Save "P0_OFFSET" - registration of same value: "0".
  0.03:... Session state: Save "P0_ACTIVE_WEEK" - registration of same value: "24 May 09".
  0.03: point of treatment: ON_SUBMIT_BEFORE_COMPUTATION
  0.03: branch point: BEFORE_COMPUTATION
  0.03: point of calculation: AFTER_SUBMIT
  0.03: tabs: make the connection for the tab queries
  0.03: branch point: BEFORE_VALIDATION
  0.03: perform validations:
  0.03:... Point Not Null Validation: P50_TIMESTAMP
  0.04: branch point: BEFORE_PROCESSING
  0.04: point of treatment: AFTER_SUBMIT
  0.04:... Process 'PK get': PLSQL (AFTER_SUBMIT) declare function get_pk return varchar2 is begin C1 in (select ORACLE_SR_SEQ.nextval double next_val) loop return c1.next_val; end loop; end; Start: P50_ORACLE_SR_ID: = get_pk; end;
  0.04:... * session state: saved point new value "P50_ORACLE_SR_ID" = "6."
  0.04:... Treat "Line of ORACLE_SR process": DML_PROCESS_ROW (AFTER_SUBMIT) #OWNER #:ORACLE_SR:P50_ORACLE_SR_ID:ORACLE_SR_ID | IUD
  0.04: see the error page...
  0.04: execute rollback...
  
  ORA-01400: cannot insert NULL into ('ABILITY'. "" "" ORACLE_SR '. "" TIMESTAMP")
  
  Cannot process the row in the ORACLE_SR table.
  Back by demand.
  
  Any thoughts would be appreciated.
  
  Thank you
  
  Justin.

  If you have changed the Source Type of an element of database column to something else, so he cannot participate in the automated line choreography Fetch/automatic line processing (DML). You must leave the Type of Source, as it was and change the default value of the element fill when the ARF process retrieves a null value for the column.

  Scott

• Problem with some values in the round of text

  Hello

  I have a problem with the control of the "ring of text.

  In my software, I need to update the values of ring of text, using a property node. But some values are not included by the ring of text, even if they are defined inside.

  I agree with you an illustration of my problem and the piece of code that does not work, I hope you can help me

  Thank you

  Julie

  Probably a result of the fact that the floating point numbers cannot represent exactly every real number.  Up to 0.4 is not exactly equal to 1e6 4th-7 x.

• How to deal with NULL values in regexp_substr?

  DECLARE
     TYPE t_rec IS TABLE OF VARCHAR2(200);
  
  /* case 1 */
     l_input    varchar2(100) := '28/09/2009 00:00:00|AFRISB|FC|773|7|17|512|76|60|U|';
  /* case 2 */
  --   l_input    VARCHAR2(100) := '06/10/2009 00:00:00|PDIERR|PS|999|0|1|0|0||U|';
     l_bars     PLS_INTEGER;
     l_fields   PLS_INTEGER;
     l_rec      t_rec := t_rec();
  BEGIN
     l_bars     := regexp_count(l_input, '\|', 1, 'i');
     l_fields   := l_bars + 1;
  
     FOR fld IN 1 .. l_fields
     LOOP
        l_rec.EXTEND();
  
        l_rec(fld)   := REGEXP_SUBSTR(l_input, '[^|]+', 1, fld);
        dbms_output.put_line('Fld ' || fld || ': ' || l_rec(fld));
     END LOOP;
  END;
  

  The above code is that I break a string of pipe delimited into individual elements.

  Looking at the case 1 in the code, the output displays each field correctly. However in case 2, the 9th field is null (nothing between the two tubes) so the regexp_substr 19 online is assigning the 'U' in the box 10 as a field 9.

  What should I do to get the line 19 to correctly assign a NULL value to field 9?

  Information about the version of the database are:

  BANNER

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

  12 c Oracle database Release 12.1.0.1.0 - 64 bit Production
  PL/SQL Release 12.1.0.1.0 - Production
  CORE Production 12.1.0.1.0
  AMT for 64-bit Windows: Version 12.1.0.1.0 - Production

  NLSRTL Version 12.1.0.1.0 - Production

  Thank you

  Steve

  Hello

  If you want to use regexes, so instead of

  REGEXP_SUBSTR (l_input, "[^ |]") +', 1, fld);

  use

  REGEXP_SUBSTR (l_input

  , '([^|] *)(\|| $)'

  -P

  fld

  NULL

  -P

  );

  . The 6th argument to REGEXP_SUBSTR is a new feature of Oracle 11.1.  It's kind of a back reference. Normally, REGEXP_SUBSTR returns the substring that matches the pattern in the 2nd argument.  If the 6th argument is 1, however, REGEXP_SUBSTR returns only the part of the pattern between the 1st on the left '(' et sa correspondance)."

• display of the output cursor empty with null values

  I have the below procedure of the State where he is shown the output to the client.

  The requirement now is if the select statement does not return a value any with the input given then output parameter should see NULL values instead of no line at all.

  
  One method is to get the number of the select query that is written in "open p_out for." And then write the condition as if count is 0 then null other show data.

  Could you please suggest me any other alternative to this.

  Create or replace procedure test (p_empno in number , p_out out sys_refcursor) is
  
  begin
   open p_out for 
   select e.ename, d.deptname, s.sal , p.addr , v.age
    from emp e ,dept d, sal s, padress p , age v
   where e.deptno = d.deptno and d.deptno = s.deptno
   s.sal_id = p.sal_id and p.id = v.id
  and e.empno = p_empno ;
  
   
  exception when others then
   open p_out for 
   select null , null,null,null,null from dual;
  
   
  end test.
  

  Thank you

  Maybe NOT TESTED!

  Select x.ename, x.deptname, x.sal, x.addr, x.age

  of the double

  left outer join

  (select e.ename, d.deptname, s.sal, p.addr, v.age

  from emp e,.

  d Dept,

  SAL s,

  padress p,

  v of the age

  where e.deptno = d.deptno

  and d.deptno = s.deptno

  and s.sal_id = p.sal_id

  and p.id = v.id

  and e.empno = p_empno

  ) x

  1 = 1

  Concerning

  Etbin

  Select x.*

  of the double

  left outer join

  (select *)

  WCP

  where ename = 'ETBIN.

  ) x

  1 = 1

  EMPNO	ENAME	JOB	MGR	HIREDATE	SAL	COMM	DEPTNO
  -	-	-	-	-	-	-	-

• Fill with the previous 'not null' value ' Null' known values

  Hi all

  I have the following requirement to fill in missing values (null values) with the "Not null" values known previously available.

  Source of the example:

  Emp_Id	Start_Dt	LOC	Comm	Grade
  A101	01/01/2013	NJ	4000	B
  A101	15/03/2013	CA	4800
  A101

  15/05/2013

  3500C

  A101

  25/07/2013

  2500

  A101

  20/12/2013

  NY5800A

  A101

  14/02/2013

  5000

  A101

  20/05/2014

  DC6000A

  A101

  03/06/2014

  3600C

  A102

  24/05/2013

  THE5000A

  A102

  15/12/20134300

  Expected results values in columns LOC and grades:

  Emp_Id	Start_Dt	LOC	Comm	Grade
  A101	01/01/2013

  NJ4000BA101

  15/03/2013

  CA4800BA101

  15/05/2013

  CA3500CA101

  25/07/2013

  CA2500CA101

  20/12/2013

  NY5800AA101

  14/02/2013

  NY5000AA101

  20/05/2014

  DC6000AA101

  03/06/2014

  DC3600CA102

  24/05/2013

  THE5000AA102

  15/12/2013

  THE4300A

  Any suggestions would be helpful.

  Kind regards

  Arun

  Also, I think that this is a case of analytics. Last_value is perhaps the most appropriate function for the given task:

  Select emp_id

  start_dt

  last_value(loc ignore nulls) over (partition by emp_id arrested by start_dt) loc

  comm

  last_value(grade ignore nulls) about category (partition by emp_id arrested by start_dt)

  t

• Throw the records with null values columns

  Hi all.
  
  Anyone know how to dispose of records containing null column values?
  
  In the target table, I have the set Null option? with "N"... then the process sqlldr load some records. I need to load all of this without the records with null column values. by result, if the field X is null then load the file.
  
  Kind regards.
  
  Published by: ASzo on 05/06/2013 12:37
  
  Published by: ASzo on 05/06/2013 12:38
  
  Published by: ASzo on 05/06/2013 12:42

  load data
  INFILE...
  in the table...
  When x! = ''
  fields completed by...
  (x ...)

• Add filter slot table form to show the lines with null values

  Hello
  
  I have a tabular presentation where we need to add a filter with two values (selection list) so that if one of the columns in a table (column1) is zero, then I need to display all records where column1 is null.
  
  I was wondering how do I put this in the Source of tabular forms where condition. This filter has only two values,
  
  All the
  NULL for the error
  
  So when the user selects all, then all the records in the table are shown
  If the user selects 'Value Null in error', while the records where Column1 is null will be shown
  
  For example
  

   column1        column2
                         A
                         B
        1               C
        3               D
   

  If the user selects, then
  
  all four files will show up. Else, only the first and the second will be returned.
  
  Thank you

  Hi, Ryan.

  Try a static LOV like this

  STATIC2:;,--- All ---;--- All ---
  

  and a Where clause, like this

  where column1 is null or :p1_filter like '%%'
  

  Jeff