How to remove duplicates from comma separated string

Similar Questions

• Remove duplicates of comma separated String

  Hello
  I have a column that contains the values of duplicates with separated by commas.
  
  Customer ID
  -----------------------------
  5,5,5,5,6,6,5,5,5,6,7,4,1,2,1,4,7,2
  
  I wrote this:
  
  Select REGEXP_REPLACE ('5, 5, 5, 5, 6, 6, 5, 5, 5, 6, 7, 4, 1, 2, 1, 4, 7, 2', ' (^ |,)([^,]*) (, \2)+','\1\2') of double;)
  ---------------------------------
  5,6,5,6,7,4,1,2,1,4,7,2
  
  But it eliminates only the continuous elements.
  I want to put it as:
  ---------------------
  5,6,7,4,1,2
  
  Help, please.
  Thank you.
  Amit
  
  Published by: 987565 on February 12, 2013 04:02

  Since you don't have 11 GR 2, making it a lot easier, I would use INSTR/SUBSTR to break the values, and then use START WITH / CONNECT BY to group the separate values of back together. I avoid the REGEXP stuff when I can because he uses a lot of CPU.

  WITH INDATA AS (
    select '9,9,8,8,7,7,6,6,5,5,4,4,3,3,2,2,1,1' x from dual
    union all
    select '9,9,8,8,7,7,4,4,3,3,2,2,1,1' x from dual
  ), TOKENIZED AS (
    SELECT DISTINCT A.INNUM,
    dense_rank() over(partition by innum order by b.column_value) x_rank,
    B.COLUMN_VALUE x
    FROM (select rownum innum, x from indata) a,
    table(cast(multiset(
      SELECT trim(SUBSTR(
        x,
        (case level
          when 1 then 1
          else instr(x, ',', 1, level-1) + 1
        end),
        (case instr(x, ',', 1, level)
          when 0 then 4000
          else instr(x, ',', 1, level) - 1 -
            (case level
              when 1 then 0
              else instr(x, ',', 1, level-1)
            end)
        end)
      ))
      FROM dual
      CONNECT BY level <= LENGTH(x) - LENGTH(REPLACE(x, ',', '')) + 1
    ) AS SYS.ODCIVARCHAR2LIST)) B
  )
  SELECT ltrim(sys_connect_by_path(x, ','),',') x
  FROM TOKENIZED A
  where connect_by_isleaf = 1
  START WITH X_RANK = 1
  connect by (innum, x_rank) = ((prior innum, prior x_rank + 1));
  
  X
  --------------------
  1,2,3,4,5,6,7,8,9
  1,2,3,4,7,8,9
  

  Published by: stew Ashton on February 13, 2013 15:47

• How to remove duplicates from a Table using PL/SQL

  I created the following tables with data:
  
  * Table 1: *.
  
  
  
  Department of CREATE TABLE
  
  (DEPARTMENT_ID 4 NUMBER PRIMARY KEY,
  
  DEPARTMENT_NAME VARCHAR2 (20).
  
  ADDRESS VARCHAR2 (20));
  
  
  
  
  
  
  
  INSERT INTO Department VALUES (10, 'ACCOUNTING', 'NEW YORK');
  
  INSERT INTO Department VALUES (20, "SEARCH", "DALLAS");
  
  INSERT INTO Department VALUES (30, 'SALES', 'CHICAGO');
  
  INSERT INTO Department VALUES (40, 'OPERATIONS', 'BOSTON');
  
  COMMIT;
  
  
  
  * 2nd table: *.
  
  CREATE TABLE employee
  
  (EMPLOYEE_ID NUMBER 4 PRIMARY KEY,
  
  EMPLOYEE_NAME VARCHAR2 (20).
  
  USE VARCHAR2 (20).
  
  MANAGER_ID NUMBER 4,
  
  HIRE_DATE DATE,
  
  NUMBER OF SALARY (9, 2)
  
  COMMISSION (9, 2) NUMBER,
  
  Department_id number 4 REFERENCES department (DEPARTMENT_ID));
  
  
  
  
  
  
  INSERT INTO employee
  
  VALUES (7839, 'KING', 'PRESIDENT', NULL, NOVEMBER 17, 81 ', 5000, NULL, 10);
  
  INSERT INTO employee
  
  VALUES (7698, "BLAKE", "MANAGER", 7839, MAY 1, 81 ', 2850, NULL, 30);
  
  INSERT INTO employee
  
  VALUES (7782, "CLARK", "MANAGER", 7839, JUNE 9, 81 ', 2450, NULL, 10);
  
  INSERT INTO employee
  
  VALUES (7566, "JONES", "MANAGER", 7839, APRIL 2, 81 ', 2975, NULL, 20);
  
  INSERT INTO employee
  
  VALUES (7654, 'MARTIN', 'SELLER', 7698, 28-SEP-81', 1250, 1400, 30);
  
  INSERT INTO employee
  
  VALUES (7499, 'ALLEN', 'SELLER', 7698, FEBRUARY 20, 81 ', 1600, 300, 30);
  
  INSERT INTO employee
  
  VALUES (7844, 'TURNER', 'SELLER', 7698, ' 08-SEP-81', 1500, NULL, 30);
  
  INSERT INTO employee
  
  VALUES (7900, 'JAMES', 'CLERKS', 7698, 3 DECEMBER 81', 950, NULL, 30);
  
  INSERT INTO employee
  
  VALUES (7521, 'WARD', 'SELLER', 7698, FEBRUARY 22, 81 ', 1 250, 500, 30);
  
  INSERT INTO employee
  
  VALUES (7902, "FORD", "ANALYST", 7566, DECEMBER 3, 81 ', 3000, NULL, 20);
  
  INSERT INTO employee
  
  VALUES (7369, 'SMITH', 'CLERKS', 7902, DECEMBER 17, 81 ', 800, NULL, 20);
  
  INSERT INTO employee
  
  VALUES (7788, 'SCOTT', 'ANALYST', 7566, DECEMBER 9, 82 ', 3000, NULL, 20);
  
  INSERT INTO employee
  
  VALUES (7876, ' ADAMS, "CLERK", 7788, 12 JANUARY, 83', 1100, NULL, 20);
  
  INSERT INTO employee
  
  VALUES (7934, 'MILLER', 'CLERKS', 7782, JANUARY 22, 82 ', 1300, NULL, 10);
  
  COMMIT;
  
  
  
  I need to print all Department names, employee and salary. I did this, but how can display the name of each Department only once?
  
  
  
  
  
  Here is my code:
  
  
  
  DECLARE
  
  v_department_name department.department_name%TYPE;
  
  v_employee_name employee.employee_name%TYPE;
  
  v_salary employee.salary%TYPE;
  
  CURSOR dept_cur
  
  IS
  
  SELECT employee_name, department_name, Department OF employee salary
  
  WHERE department.department_id = employee.department_id (+)
  
  ORDER BY department_name, employee_name;
  
  BEGIN
  
  OPEN dept_cur.
  
  EXTRACT the dept_cur IN v_department_name, v_employee_name, v_salary;
  
  DBMS_OUTPUT. PUT_LINE ('DEPARTMENT_NAME EMPLOYEE_NAME WAGES');
  
  DBMS_OUTPUT. PUT_LINE('---------------------------------------------------');
  
  While dept_cur % FOUND
  
  LOOP
  
  DBMS_OUTPUT. Put_line (RPAD (v_department_name, 10) |) ' ' || RPAD (v_employee_name, 10). ' ' || v_salary);
  
  EXTRACT the dept_cur IN v_department_name, v_employee_name, v_salary;
  
  END LOOP;
  
  CLOSE Dept_cur;
  
  END;
  
  I would appreciate if you could help me with this. I'm sure it's a quick and easy answer, but I can't do it. I spent so much time already.
  
  Published by: 831522 on January 26, 2011 11:44

  It is a problem of display/reports rather than a problem of duplication of query data. The answer depends on what tools you use to query and display the data. You can use the clause "break it" I suggested earlier if you use SQL Plus.

  Otherwise, you can try this based on the version of Oracle you are using. Someone else may be able to get the data in a single pass.

  SELECT decode(emp_id, 1, department_name) department_name, employee_name, salary
  FROM(SELECT department_name, employee_name, salary,
         ROW_NUMBER() OVER (PARTITION BY department_name order by department_name, employee_name) AS emp_id
       FROM department
       LEFT OUTER JOIN employee ON (department.department_id = employee.department_id)
  ORDER BY department_name, employee_name, emp_id);
  

• How to remove duplicates from the PL - SQL table?

  Hi gurus,
  
  I have a PL - SQL table with the following structure
  Authors (SR_NO, Auth_Code, Change_Date, cost)
  
  This table is filled using a slider. However, this table can have a few lines in double (for column (Auth_Code)
  for example

  SR_NO      Auth_Code       Change_Date                       Cost
  1               A1             14-FEB-09 08.18.47 AM          11.00
  2               A2             14-FEB-09 08.18.56 AM       2839.00
  3               A1             15-FEB-09 08.00.02 AM      1299.00
  4               A1             15-FEB-09 07.00.00 AM        789.00
  5               A3             14-FEB-09 08.18.56 AM        312.00
  6               A4             14-FEB-09 08.19.02 AM        233.00

  I need to get the above result set select the separate lines of Auth_Code including the Change_Date is maximum (and store in another PL - SQL table for treatment later or even the removal of this table will be also!)
  
  of the data A1 is duplicated and a maximum Change_Date above = 15 February 09 08.00.02 AM.
  Where my PL - SQL Table that results must have given below
  

  SR_NO      Auth_Code       Change_Date                       Cost
  2               A2             14-FEB-09 08.18.56 AM       2839.00
  3               A1             15-FEB-09 08.00.02 AM      1299.00
  5               A3             14-FEB-09 08.18.56 AM        312.00
  6               A4             14-FEB-09 08.19.02 AM        233.00

  I'm not very aware of the PL - SQL tables and there is no chance to change the existing cursor that fills the data in this table PL - SQL.
  I guess that I need to compare each record of PL - SQL table with others, but do not know how to do this.
  
  Could you please help?

  Hello

  Like this?:

  Connected to Oracle Database 10g Express Edition Release 10.2.0.1.0
  Connected as hr
  
  SQL>
  SQL> with data as(
    2  select 1 as SR_NO, 'A1' as Auth_Code, to_date('14-FEB-09 08.18.47', 'dd-mon-yy hh24:mi:ss') as change_date,    11.00 as cost from dual union all
    3  select 2 as SR_NO, 'A2' as Auth_Code, to_date('14-FEB-09 08.18.56', 'dd-mon-yy hh24:mi:ss') as change_date,  2839.00 as cost from dual union all
    4  select 3 as SR_NO, 'A1' as Auth_Code, to_date('15-FEB-09 08.00.02', 'dd-mon-yy hh24:mi:ss') as change_date,  1299.00 as cost from dual union all
    5  select 4 as SR_NO, 'A1' as Auth_Code, to_date('15-FEB-09 07.00.00', 'dd-mon-yy hh24:mi:ss') as change_date,   789.00 as cost from dual union all
    6  select 5 as SR_NO, 'A3' as Auth_Code, to_date('14-FEB-09 08.18.56', 'dd-mon-yy hh24:mi:ss') as change_date,   312.00 as cost from dual union all
    7  select 6 as SR_NO, 'A4' as Auth_Code, to_date('14-FEB-09 08.19.02', 'dd-mon-yy hh24:mi:ss') as change_date,   233.00 as cost from dual)
    8  select * from data d where change_date = (select max(change_date) from data d2 where d.auth_code = d2.auth_code);
  
       SR_NO AUTH_CODE CHANGE_DATE       COST
  ---------- --------- ----------- ----------
           2 A2        14/02/2009        2839
           3 A1        15/02/2009        1299
           5 A3        14/02/2009         312
           6 A4        14/02/2009         233
  
  SQL>
  

  Kind regards

• comma-separated string

  I have a string that comes an external instrument. When it is read, he appears in a format like this:

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