check NULL values with expressions

Similar Questions

• Replace the Null values with zero in MDB

  Hello
  
  How can I replace Null values with zero in MDB. I tried NVL (column_name, 0), he said: syntax error.
  
  Thanks for your time and your help.

  Hello

  In the layer of Buisenss you always use IFNULL (column, 0)

  Concerning
  Adil

  Published by: adil.harrab on April 8, 2011 17:33

• Need to null values with the values of filling the date before weekend/holidays

  I have a table with a Date column, column Type and rate column.
  
  The problem is when the weekends and holidays, column Type and rate column are null.
  
  I need all null values with the values of Type and fill rate before that date is the weekend and public holidays.
  
  Example:
  
  I have:
  
  RATE OF TYPE DATE
  07/01/2010 4510 PM 3.71
  07/01/2010 CETE28 4.59
  07/01/2010 TIIE28 4.95
  07/02/2010 4510 PM 3.82
  07/02/2010 CETE28 4.63
  07/02/2010 TIIE28 5.11
  * NULL NULL 07/03/2010 *.
  * NULL NULL 07/04/2010 *.
  07/05/2010 4510 PM 3.91
  07/05/2010 CETE28 4.74
  07/05/2010 TIIE28 5.25
  
  Will be:
  
  RATE OF TYPE DATE
  07/01/2010 4510 PM 3.71
  07/01/2010 CETE28 4.59
  07/01/2010 TIIE28 4.95
  07/02/2010 4510 PM 3.82
  07/02/2010 CETE28 4.63
  07/02/2010 TIIE28 5.11
  * 07/03/2010 4510 PM 3.82*
  * 07/03/2010 CETE28 4.63*
  * 07/03/2010 TIIE28 5.11*
  * 07/04/2010 4510 PM 3.82*
  * 07/04/2010 CETE28 4.63*
  * 07/04/2010 TIIE28 5.11*
  07/05/2010 4510 PM 3.91
  07/05/2010 CETE28 4.74
  07/05/2010 TIIE28 5.25
  
  What could I do?

  Hello

  You can use the analytic LAST_VALUE function to get the last day of work before each date into your table. It will be the same as the current day for every day of work.
  Do it a self-join to combine each current line (c) with the last day of work (l):

  WITH     got_last_work_day     AS
  (
       SELECT     dt, type, rate
       ,     LAST_VALUE ( CASE
                      WHEN  type  IS NOT NULL
                      THEN  dt
                     END
                     IGNORE NULLS
                    ) OVER (ORDER BY dt)     AS last_work_day
       FROM     table_x
  )
  SELECT       c.dt, l.type, l.rate
  FROM       got_last_work_day     c
  JOIN       got_last_work_day     l  ON       (    c.dt          = l.dt
                           AND  c.type          = l.type
                           )
                         OR     (    c.last_work_day     = l.dt
                           AND  c.type          IS NULL
                           )
  ORDER BY  c.dt
  ,       l.type
  ;
  

  Among other things, I guess that the type is NULL if (and only if) the line represents a holiday or weekend, and that the combination (dt, type) is uniuqe.

• Replace NULL values with 0 to Pivot

  Hi all
  
  I use a union query, I need to display 0 instead of NULL values. I tried various methods such as ifnull(), case; I could see in the table, but not in pivot of 0.
  I tried and succeeded in placing '-' instead of null. If I put a line chart the chart seems meaningless.
  Can someone suggest me this chart & pivot.
  
  Thanks in advance,
  Jerome

  Hi Leila,

  Hope this link helps you

  [http://total-bi.com/2010/10/replace-nulls-in-obiee-pivot-table/]

  By,.
  KK

• How to check multiple values with another column?

  Hi all

  create table xxc_abc (col1 , dept_id number number);

  create the table xxc_bbb (col2 number,sa_dept_id number);

  insert into xxc_abc values (1,10)

  insert into xxc_abc values (2,11)

  insert into xxc_abc values (3,12)

  insert into xxc_bbb values (20.10)

  insert into xxc_bbb values (20,11)

  insert into xxc_bbb values (20,12)

  SELCT

  xxc_abc a.,

  xxc_bbb b

  where a.dept_id = b.sa_dept_id

  Expected results

  a.Col1 b.col2

  ---------  --------

  1 20

  2 20

  3 20

  I need to get several values a.col1 with the same value of the b.col2 column

  a.Col1 b.col2

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

  1 20

  2 20

  3 20

  Thank you

  Post edited by: Rajesh123 added Test cases in the main Thread

  Select the number you want to
  

  
  

  with

  xxc_abc as

  (select 1 col1, 10 dept_id in union double all the)

  Select 2,11 Union double all the

  Select double 3.12

  ),

  xxc_bbb as

  (select col2 20, 10 sa_dept_id union double all the)

  Select 20,11 Union double all the

  Select 20,12 double

  )

  Select col1, col2, cnt_all, cnt_not_null, cnt_unique

  from (select a.col1, b.col2,

  Count (*) on cnt_all (b.col2 partition).

  Count (a.Col1) on cnt_not_null (b.col2 partition),

  Count (distinct a.col1) on cnt_unique (b.col2 score)

  xxc_abc a.,

  xxc_bbb b

  where a.dept_id = b.sa_dept_id

  )

  where least (cnt_all, cnt_not_null, cnt_unique) > 1

  order by col1

  COL1	COL2	CNT_ALL	CNT_NOT_NULL	CNT_UNIQUE
  1	20	3	3	3
  2	20	3	3	3
  3	20	3	3	3

  Concerning

  Etbin

• Replace the NULL value with some characters

  Hi all
  
  I am writing a query to get the name of the contact and the age of a table. the age column has some value, I want these nulls to be replaced by "N/a".
  I user NVL ("age," n/a ")
  
  but it gives an error
  ORA-01722: invalid number
  
  Please suggest.
  
  Thank you

  Hello

  You must convert the age in tank to be replaced by the string of characters in the case opposite number

  Then use this

  select name, nvl(to_char(age),'N/A') from myage;
  

  Concerning

• 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

• Replace NULL values for PIVOT query

  Hello
  
  I'm working a table for sales, for certain values, when now columns, finishing with a null value. How can I handle these values 0 (zeros).
  
  WITH (AS PIVOT_DATA)
  SELECT S.ZONE_CODE, Z.ZONE_NAME, S.YEAR, S.PERIOD, S.SALES
  OF STAT_TABLE_SALES ADV
  AREAS OF JOIN Z ON S.COMP = Z.COMP AND S.ZONE_CODE = Z.ZONE_CODE
  WHERE S.COMP = '001'
  AND S.BRAND_CODE = '001'
  )
  SELECT *.
  OF PIVOT_DATA
  PIVOT)
  SUM (SALES) FOR THE PERIOD (YEAR) TO ((20091),
  (2009,2),
  (2009,3),
  (20094)
  (2009,5),
  (2009,6),
  (2009,7),
  (2009.8),
  (2009,9),
  (2009.10)
  (2009,11),
  (2009.12),
  (2010,1),
  (20102)
  (2010,3),
  (2010,4),
  (2010,5),
  (2010,6),
  (2010.7))
  )
  ORDER BY DESC NULLS LAST 14;
  
  This query returns the following:
  
  COD_ZONA NOM_ZONA 2009_3 2009_2 2009_1
  -------- ------------------------------ ---------------------- ---------------------- --------------------
  01 YEDUSIJH. 1382367.75 1559943.27 1441279.64
  02 C, ASKAK 711897.82 865854,05 1583232.3
  ASDFG 03 130443.03 205409,84 178633.69
  04 OSOIDSD 320118.32 439008,83 409251.18
  05 ODFSDF 300908.21 276301,59 260188.53
  06 CH 242749.65 325196,71 464938.9
  SOA 07 610312.31 606312,93 754569.82
  08 SAN 89426.8 81360,04 61649.27
  09 YP 284487.79 328281,31 267210.85
  10 TC 87043.28 158594,43 85195.8
  11 BAGNN 76778.78 68180,76 118530.04
  12 CRT 122023.7 143442,21 134744.85
  13 ABC 209992.79 196477,03 185222.14
  IDLIB 14
  15 ARE 23870.41 4137,33 16660.53
  
  * These are not all the columns and rows, but it is a piece of what it returns.
  
  How can I replace the NULL values with 0 (zeros).

  Still not sure why nvl shouldn't meet your needs:

  SQL> select ename, nvl (clerk_20, 0) clerk_20, nvl (sal_30, 0) sal_30
    from emp pivot (sum (sal)
             for (job, deptno)
             in ( ('CLERK', 20) clerk_20, ('SALESMAN', 30) sal_30))
  /
  ENAME             CLERK_20          SAL_30
  ---------- --------------- ---------------
  WARD                     0            1250
  JONES                    0               0
  TURNER                   0            1500
  ADAMS                 1100               0
  ALLEN                    0            1600
  SMITH                  800               0
  CLARK                    0               0
  KING                     0               0
  BLAKE                    0               0
  JAMES                    0               0
  FORD                     0               0
  SCOTT                    0               0
  MARTIN                   0            1250
  MILLER                   0               0
  
  14 rows selected.
  

• SQL Server NULL values

  I want to print something, if the value is not blank or not NULL. What exactly is the code for this? Why is it not simple check NULL values when the database allows NULL values?
  
  < cfif getFaculty.emply_mddl_intl NEQ "" GOLD getFaculty.emply_mddl_intl IS NOT NULL > does not work. What does it mean?
  
  D

  I wouldn't change the database. using the len (trim (string)) is just a reality in the world of CF. you get used to it :)

  Yes, in queries, you can use the keyword NULL to your heart's content.

  UPDATE myTable SET col1 = NULL where foo = 'bar '.

• Inline when checking for null values

  Hi, I'm currently stuck with a problem regarding the verification of null values. The problem revolves around an address line, where I want to display values such as roadname, number, zip code etc. The address line is supposed to be on a single line, no carriage return. The address line must be prepared for null values, if we say it have no house number. That's why I am attaching these tags with an if statement:
  
  & lt;if@inline:HOUSENUMBER!= "? & gt; & lt;? HOUSE number? & gt; & lt;? end if? & gt;
  
  But when I try this in my report, it seems that @inline BEEP do not take into account the signal no one checking the logical expression and always showing the content enclosed in the case. When I remove @inline, it works as it should, but there is a carriage return when the value is zero.
  
  Does anybody know a solution for this?
  
  Thanks in advance
  
  Kim

  Hi Kim

  Hmmmm works for me. I noticed that you have a lack? just before the if. You can also try @inlines, it's a subtle difference in functionality.

  Even without the FI doesn't text collapse left anyway?

  Tim

• You can not call a method on a null value expression.

  Hello

  We are working on the tool of basic hygiene WMI for windows 2008 server of health check of the scent system but in error during the run automation tool

  "Cannot call a method on a null expression."

  LE000561ERROR: You can not call a method on a null value expression.
  ERROR: The value of the argument cannot be an empty string.

  Please suggest the same

  Hi Diakité Srivastava,

  Your question is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the IT Pro TechNet public. Please post your question in the TechNet forum.

  http://social.technet.Microsoft.com/forums/en/category/WindowsServer/

• checking int null value

  Hello
  a little silly question how to check the value for null int...
  I'm dealing with java.lang.IllegalArgumentException When you call the function defined in AM when inputText which provides function the int parameter contains no value.
  How can this be avoided?
  for the types of objects, you can use operator 'is' Java, what primitives?

  You can use the following piece of code for int a

  If (("".equals (a)) |) ("null".equals (a)))
  {
  int one is null
  do something
  }

• 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