Find a value in a table

Similar Questions

• How to find null values in the table

  Hi experts,
  
  my version is oracledb10g:
  
  I am doubted simple.
  
  for example:
  
  create table ex1 (e varchar2 (20));
  
  Insert ex1 (null).
  
  insert into ex1 (e)
  
  number of will be: 2
  
  I can easily find the value "e".
  
  so my question is:
  
  How can I find null values in the table and I want to remove the null values from the table.

  ADF 7 wrote:
  Hi experts,

  my version is oracledb10g:

  I am doubted simple.

  for example:

  create table ex1 (e varchar2 (20));

  Insert ex1 (null).

  insert into ex1 (e)

  number of will be: 2

  It depends on what you expect. If you issue count (*) you ask Oracle "how many lines there. If you issue a County () you ask Oracle 'how non null values for are there. "

  ADF 7 wrote:

  I can easily find the value "e".

  so my question is:

  How can I find null values in the table and I want to remove the null values from the table.

  delete from 
  where  is null;
  

  Ideally you would simply place a NOT NULL constraint on the column in question, thus prohibiting NULL values into the system (assuming that your business needs, it is that the column MUST always have a value).

• How to find missing values in the table?

  Hi all..

  Please help me.

  

  For example:

  I have a. table

  in this table, I have a folder with the number 1 up to 10 serial number.

  And then, in table B, I put number between 1 and 10.

  and I use the number 1, 2, 3, 6, 8, 10.

  I want to find missing values between 1 and 10. So, can I select with query for this case?

  It's the value of query output:

  4, 5, 7, 9

  Sorry for the bad language.

  Thank you all.

  Select

  r

  Of

  (

  Select Rownum r

  Of the double

  Connect by Rownum<= (select="" serialto="" from="">

  )

  where are > = ((select serialfrom from tablea))

  less

  Select the series from tableb

• Find most common value in a table of enums

  Hello

  I'm looking for a stylish way to find most common value in a table of enums

  My being of enum:

  0 - close

  1 - open

  2 - undefined

  For example, if my table contains:

  Close, close, open, close, close, open.

  The most common value would be 'Closed'

  I created a very personalized VI which allows me to get the desired result, but I'm really not proud of doing it this way, just simply because I need to change if I add a new value to my enum...

  If anyone can share some ideas to enlighten me, I would REALLY appreciate it.

  Thanks in advance!

  I don't know, I'd go the yard road, to propose, he could save a single iteration since you know 0 is the first point of departure, but you then must deal with the determination of lengths and dealing with missing values that return-1, etc..

  If you really expect of very large tables, I would have moved my previous version which is supposed to be quick to write in another simple method of counting.

  

• How to find the value closest in the table?

  Hi all

  I just want to find the value closest from the string table. That I joined herer as an image.

  Now, if I want to find the value of 350 of the string table and that's not in the table in the output array there should be more close 350 display value...

  Thank you for the support

  Vinal Gandhi

  Hi G Vinal,

  something like the joint comes to my mind.

  It may be useful

  Mike

• How to find the value max and min for each column in a table 2d?

  How to find the value max and min for each column in a table 2d?

  For example, in the table max/min for the first three columns would be 45/23, 14/10, 80/67.

  Thank you

  Chuck,

  With color on your bars, you should have enough experience to understand this.

  You're a loop in the table already.  Now you just need a function like table Max and min. loop.  And you may need to transpose the table 2D.

• Find the minimum value of the table in time...

  Firstly that it is not "find the min value in the table.

  It is:

  I have a table that changes its values at each iteration, and I want to compare the new values with previous values and make a new array with the minimum values...

  In C++, it would be like this:

  int main() {}

  int array [8];

  int min [8];

  int i;

  for (i = 0; i<>

  min [i] = 1000000; Initialize minimum table with a high value

  }

  {while (1)}

  Array = update_array ();

  for (i = 0; i<>

  If (array [i]<>

  min [i] = array [i];

  }

  }

  do things...

  }

  return 0;

  }

  IM new to labview and it always confuses me a lot...

  Thanks in advance.

  Using the function Max & Min regular (not table Max & min as you know) with tables and a good will of employment registry change.  Max Min &, as most of the digital functions, is polymorphic and works witt tables as well as scalars.

  Lynn

  

• To find the nth higher/lower value in a table

  Hi all

  I have a question

  in the table a1(empid,sal) are the 2 columns

  EmpID sal

  100-5000

  105 7500

  110 3500

  087 11136

  14336 95

  I didn't want to write the query that will give me the 3rd highest salary. or generalized to find the nth more eleve/nieme the lowest value of the table.

  Note:-Rownum and Rowid must not be used

  Thank you

  Hello

  You can use a generic result of queries to find nth highest salary...

  Just put the value of N in the query, you will get the answer...

  Query:

  SELECT E1. Salary OF EMP E1 WHERE (N) = (SELECT COUNT (DISTINCT E2. Salary) OF EMP E2 WHERE E2. Salary > = E1. Salary);

  hope you got the answer...

  Check if it really helps...

  thanxx...

• How to find a value in any column of the table - essentially a search

  Hi guys,.

  Thanks in advance for your help.

  I'll try to find a value in any column of the table? How can I do?

  An example of value would be "FEDERAL."

  Using Oracle 11 g and SQL Developer.

  Thank you

  It's a question that is asked in the past several times (but not recently from what I remember).

  Michaels has provided in the past, solutions which are quite clever, just using SQL...

  10g of solution

  Michaels > var val varchar2 (5)

  Michaels > exec: val: = "Sub".
  PL/SQL procedure successfully completed.

  Michaels > select distinct substr (: val, 1, 11) "keyword."
  substr (table_name, 1, 14) "table."
  substr (t.column_value.getstringval (), 1, 50) ' / value of the column.
  CLO.
  Table
  (xmlsequence
  (dbms_xmlgen.getxmltype ("select" | column_name))
  || 'from ' | table-name
  || ' where upper (')
  || column_name
  || ') as superior (' %' |: val)
  || '%'')'
  ) .extract (' LINES/rowset / * "")
  )
  ) t
  -where table_name in ('EMPLOYEES', 'JOB_HISTORY', 'SERVICES')
  order of the "Table".

  11g upwards

  SQL > select table_name,.
  column_name,
  : search_string search_string.
  result
  from (select column_name,
  table_name,
  "ora: view("' ||) " table_name | "") / LINE /' | " column_name | "[ora:contains (text ()," %' |: search_string | ")]. (%») > 0]' str
  CLO
  where table_name in ('EMP', 'Department')),
  XMLTable (columns str result varchar2 (10) path '.')
  /

  TABLE_NAME COLUMN_NAME SEARCH_STRING RESULT
  ------------------------------ ------------------------------ -------------------------------- ----------
  DEPT                           DNAME                          es                               RESEARCH
  EMP                            ENAME                          es                               JAMES
  EMP                            JOB                            es                               SALESMAN
  EMP                            JOB                            es                               SALESMAN

  4 selected lines.

• How to find this value in the oracle database to find out the table

  Hi expert,
  
  I know there is a value in the oracle database, please show me how to find this value in the oracle database to find out the table that contains this value.
  
  Thank you very much

  918440 wrote:
  Hi expert,

  I know there is a value in the oracle database, please show me how to find this value in the oracle database to find out the table that contains this value.

  Thank you very much

  Go to the online documentation and discover the data dictionary. You may be interested in reading about ALL_TAB_COLUMNS, but you will need to know what you want until you can query the view to find information

• maximum values of five table 2d

  Hi, I have a vi that reads in the values of a 2D array, and then uses this information. I currently use the vi 'Table Max and Min' to find the maximum values of the table. It can be beneficial for my application find the maximum of 5 or any other number of values in the table. My current plan is to use a loop that detects that the maximum value of the original array and then subtract this value and repeat the operation once 5 or greater. However, I believe that it is innefficient and can take a long time in a vi that must run pretty quickly. I would like suggestions. Thanks in advance.

  It would be a bit faster

  

  After overhaul at 1 d

  Sort the table (from the smallest to largest)

  Turn the tide (the biggest to the smallest now

  Get the highest values since the beginning

• To find a value that does not move to columns

  Version of database 11g (11.2.0.3.0)
  AIX OPERATING SYSTEM
  
  I'm writing some SQL/PLSQL, who selects a value in a table that is not always in the same column. I need to find which column is on a table, then use this place of the column to find its value coresponding on another table.
  
  Example:
  

  CREATE TABLE TIMES (RUN_ID  NUMBER(10),TIME1 NUMBER(10), TIME2 NUMBER(10), TIME3 NUMBER(10), TIME4 NUMBER(10),TIME5 NUMBER(10));
  CREATE TABLE VALS (RUN_ID  NUMBER(10),VAL1 NUMBER(10), VAL2 NUMBER(10), VAL3 NUMBER(10), VAL4 NUMBER(10),VAL5 NUMBER(10));
  
  INSERT INTO TIMES VALUES (1000, 1,2,3,4,5);                          
  INSERT INTO TIMES VALUES (1001, 2,3,4,5,6);                          
  INSERT INTO TIMES VALUES (1002, 3,4,5,6,7);                          
  
  INSERT INTO VALS VALUES (1000, 101,102,103,104,105);                          
  INSERT INTO VALS VALUES (1001, 106,107,108,109,110);                          
  INSERT INTO VALS VALUES (1002, 111,112,113,114,115);                          
  
  SQL> select * from times;
  
      RUN_ID      TIME1      TIME2      TIME3      TIME4      TIME5
  ---------- ---------- ---------- ---------- ---------- ----------
        1000          1          2          3          4          5
        1001          2          3          4          5          6
        1002          3          4          5          6          7
  
  SQL> 
  select * from vals; 
  
      RUN_ID       VAL1       VAL2       VAL3       VAL4       VAL5
  ---------- ---------- ---------- ---------- ---------- ----------
        1000        101        102        103        104        105
        1001        106        107        108        109        110
        1002        111        112        113        114        115

  So for a time-say 3, I want to be able to find first the rows and columns, it appears in on the TIME table and the upward gaze of the WALTZ in the same places of the column in the table VALS.
  
  Thus, for example the time 3 above, I want to be able to return:
  
  1000 103 RUN_ID
  1001 107 RUN_ID
  111 1002 RUN_ID
  
  I got a database that stores values like that so I can't change the way the data is unfortunately inspired. Is there one clever way to do other than look at each TIME column by Union them together, then creating some dynamic sql statements to get the values of the VALS table?
  
  This is a simplified example, but the table has 98 columns!
  
  Any help will be greatly appreciated.
  
  Published by: 991224 on March 1st, 2013 07:13

  Hello

  Welcome to the forum!

  Thanks for posting the CREATE TABLE and INSERT statements; It's very useful!

  If you cannot permanently normalize the data, then you can normalize it on the fly.
  Here's one way:

  WITH   unpivoted_times     AS
  (
       SELECT     run_id
       ,     col_num
       ,     t_val     -- If wanted
       FROM     times
       UNPIVOT ( t_val
              FOR  col_num IN ( time1  AS  1
                                      , time2  AS  2
                                      , time3  AS  3
                                      , time4  AS  4
                                      , time5  AS  5
                              )
            )
       WHERE     t_val     IN (3)     -- or whatever
  )
  SELECT   v.run_id
  ,      CASE  t.col_num
              WHEN  1  THEN  val1
              WHEN  2  THEN  val2
              WHEN  3  THEN  val3
              WHEN  4  THEN  val4
              WHEN  5  THEN  val5
        END   AS v_val
  FROM      unpivoted_times  t
  JOIN      vals            v  ON  v.run_id  = t.run_id
  ;
  

  If the same number of target may occur more than once on the same line at the time, then the above query generates multiple lines with the same run_id. For example, if we change your data a little examples:

  -- Don't use this row:
  -- INSERT INTO TIMES VALUES (1002, 3,4,5,6,7);
  -- Use this row instead:
  INSERT INTO TIMES VALUES (1002, 3,3,3,6,7);                          
  

  Leave all other sample data, as you have it posted, then the output is:

  `   RUN_ID      V_VAL
  ---------- ----------
        1000        103
        1001        107
        1002        111
        1002        112
        1002        113
  

  If you have 98 (not just 5) columns that need to be compared, then you will need to list all 98 of these columns at the time in the UNPIVOT clause and all 98 of vals in the expression BOX. Sorry; I don't see any way around that. You could write dynamic SQL statements to the parts of code for you.

• find the value relative to another column

  Find the value column B in the column 'sparent. Let me explain the few cases:
  Suppose that we receive the 1000 kg of quantity for Jack, Jack then transferred this 1000 kg to Robin and Robin transferred once again this amount to Parkins and so on. A column named Type records the entry type, either it's a receipt or transfer operation. His entry would be recorded in my table like:
  
  QTY_ A_ B_ Type_
  Reception of 1000 Jack
  1000 jack Robin transfer
  Transfer of 1000 Robin Parkins
  
  So, with this information, you find the parent of Parkins, Jack, receipt of Type?

  with t as (select 1000 qty,null a,'jack' b,'receipt' type from dual
               union all
                 select 1000,'jack','robin','transfer' from dual
                 union all
                 select 1000,'robin','','transfer' from dual
                 union all
                 select 1000,'parkins','jack','transfer' from dual)
      select *
        from t
        where connect_by_isleaf = 1
        and a is null
        connect by nocycle b = prior a
       start with b = 'jack' ;
  
         QTY A       B     TYPE
  ---------- ------- ----- --------
        1000         jack  receipt
  1 row selected.
  

  Good bye
  DPT

• find a value that is the most

  Let's say I have a column with different values, now I want to find a value located most, how is the best way to make this request?
  Is the best solution to do this way:
  

  WITH t AS
   (SELECT 'a' AS VALUE  FROM Dual  UNION ALL
    SELECT 'b'  FROM Dual  UNION ALL
    SELECT 'a' FROM Dual)
  SELECT VALUE
  FROM (SELECT t.Value, COUNT(*) AS Cnt
             FROM t
             GROUP BY t.Value
             ORDER BY Cnt DESC
            )
  WHERE Rownum = 1

  As you can see that the value 'a' is more time in table T, then the query must exit the 'a' and nothing more. If the number of occurrences of the 'a' and 'b' would be the same, then the application should exit one of them, no matter which.
  As you can see query now does not seem to be well optimized, I think.
  (Oracle 10g)

  Or

  SQL> with t
       as (
    select 'a' as value from dual union all
    select 'b' from dual union all
    select 'b' from dual
  )
  --
  --
  select max (value) keep (dense_rank last order by count (*)) value,
         count(*) cnt
    from t
  group by value
  /
  VALUE        CNT
  ----- ----------
  b              2
  1 row selected.
  

  Published by: MichaelS on December 14, 2010 10:39

  CNT added.

• kindly tell how to use the unique value of a table with the index 0

  kindly tell how to use the unique value of a table with the index 0

  Hi
  
   
  
  Yep, use Index Array as Gerd says. Also, using the context help ( + h) and looking through the array palette will help you get an understanding of what each VI does.
  
   
  
  This is fundamental LabVIEW stuff, perhaps you'd be better spending some time going through the basics.
  
   
  
  -CC