Why is conversion of procedures & functions due to lack of MySQL to Oracle?

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• Difference of procedure & function

  Hi all

  After citing some tutorials, I got to know that the difference between the procedure and the function is that the procedure may or may not return a value as the function must return a value to the calling program. Given below is my procedure. & He would compare the lower of the two numbers would be smaller than

  create or replace procedure findmin

  (

  x in number,

  there in numbers,

  z series

  )

  is

  Start

  if(x<y) then

  z: = x;

  on the other

  z: = y;

  end if;

  end;

  declare

  c number;

  Start

  findmin (23,45,c);

  dbms_output.put_line (c);

  end;

  Here's my function even if it does the same thing.

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  y number

  )

  Return number

  is

  number of z;

  Start

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  end if;

  Return z;

  end;

  declare

  Start

  dbms_output.put_line (findmin_fun (56,28));

  end;

  I would like to know under what are all the scenarios of the procedure and function would be used. And also I want to know could do dml as insert, update, and delete operations

  If so, could you guys explain me with some examples to expose DML operations on functions

  After citing some tutorials, I got to know the difference between the procedure & function is that the procedure may or may not return a value as the function must return a value to the calling program.

  Not quite.

  A procedure does NOT return a value - it can fill in the parameters OUT or INOUT but which is NOT considered to be "of return values.

  A function ALWAYS returns a value that can be null. The only exception is if the function throws an exception.

  My procedure is given below. It would be to compare the lower of the two numbers & would mean that smaller

  Not quite - the procedure returns NO value. You use it to try to fill one OUT parameter, but it's NOT the same.

  I would like to know under what are all the scenarios the procedure & function would be used.

  Functions can be used in SQL; procedures cannot be used in SQL.

  The functions return a value; procedures of does NOT return a value.

  Use the functions when you need to return a value; Use the procedures when you do NOT need to return a value.

  It is not possible to list 'all scenarios' for one or the other, because there may be ANY NUMBER of possible scenarios.

  And also I want to know could do dml as insert operations, update & delete

  What happened when you tried?

  The best and fastest, to learn is to actually TRY THINGS. Don't be afraid to break the Oracle by actually writing code and tests of things yourself.

  If so, could you guys explain me with some examples to expose DML operations on functions

  The Oracle documentation have a LOT of examples of using functions and procedures and include the code of the example.

  https://docs.Oracle.com/CD/E11882_01/AppDev.112/e25519/subprograms.htm#CHDBEJGF

  The internet has even more examples of code.

• Updated APEX collection error ORA-04044: procedure, function, package, type

  Hi all
  
  I am trying to update the APEX MEMBER of the COLLECTION and encounter errors:
  
  
  1 error has occurred
  ORA-06550: line 9, column 8: PL/SQL: ORA-04044: procedure, function, package or type is not allowed here ORA-06550: line 7, column 3: PL/SQL: statement ignored
  
  The PLSQL code are as below
  
  DECLARE
  entire x;
  v_date_started VARCHAR2 (255);
  v_date_finished VARCHAR2 (255);
  BEGIN
  SELECT c.seq_id
  X
  OF APEX_COLLECTION c
  WHERE collection_name = "PHASE_COLLECTION."
  AND c001 =: P41_MPM_ID
  and rownum = 1;
  v_date_started: =: P41_DATE_STARTED;
  v_date_finished: =: P41_DATE_FINISHED;
  
  APEX_COLLECTION. () UPDATE_MEMBER
  p_collection_name = > 'PHASE_COLLECTION '.
  , p_seq = > x
  , p_c004 = > v_date_started
  , P_c005 = > v_date_finished
  );
  END;
  
  
  The process will take place after SUBMIT and validation.
  
  The code I used to add a colletion APEX will work perfectly and is as below
  
  -Initialization Collection PHASE_COLLECTION
  BEGIN
  IF THIS ISN'T APEX_COLLECTION. COLLECTION_EXISTS('PHASE_COLLECTION') THEN
  APEX_COLLECTION. CREATE_COLLECTION ('PHASE_COLLECTION');
  ON THE OTHER
  APEX_COLLECTION. TRUNCATE_COLLECTION ('PHASE_COLLECTION');
  END IF;
  -Add members to the COLLECTION PHASE of table PHASE_MEMBERSHIP
  IF: P41_MPM_ENG_ID IS NOT NULL THEN
  FOR x IN (SELECT mpm_id, mpm_eng_id, phase_number, date_started, date_finished, date_created
  OF phase_membership
  WHERE mpm_eng_id =: P41_MPM_ENG_ID
  AND active = 1
  ORDER BY date_created)
  LOOP
  APEX_COLLECTION. ADD_MEMBER
  (p_collection_name = > 'PHASE_COLLECTION')
  , p_c001 = > x.MPM_ID
  , p_c002 = > x.MPM_ENG_ID
  , p_c003 = > x.PHASE_NUMBER
  , p_c004 = > x.DATE_STARTED
  , p_c005 = > x.DATE_FINISHED
  , p_c006 = > x.DATE_CREATED
  
  );
  END LOOP;
  END IF;
  EXCEPTION
  WHILE OTHERS THEN
  Logger.Error (p_message_text = > SQLERRM)
  , p_message_code = > SQLCODE
  , p_stack_trace = > dbms_utility.format_error_backtrace
  );
  LIFT;
  END;
  
  
  What I tried to use APEX_COLLETION to check the overlap between the date_range.
  The requirement is just to display a warning if the user adds a record to the new phase or update record of current phase may overlap between the order of phase together.
  Table PHASE_MEMBERSHIP script is
  
  CREATE TABLE 'PHASE_MEMBERSHIP '.
  (
  ACTIVATE THE "MPM_ID" NUMBER NOT NULL,
  ACTIVATE THE "MPM_ENG_ID" NUMBER NOT NULL,
  ACTIVATE THE "PHASE_NUMBER" NUMBER (2.0) NOT NULL,
  "DATE_STARTED" DATE NOT NULL ACTIVATE.
  DATE OF THE "DATE_FINISHED."
  'NOTES' VARCHAR2 (2000 BYTE),
  'DATE_CREATED' DATE NOT NULL ACTIVATE.
  ACTIVATE THE 'CREATED_BY' VARCHAR2 (20 BYTE) NOT NULL,
  NUMBER (2.0) 'ACTIVE' DEFAULT 1 ACTIVATE NOT NULL)
  
  So, basically, I want to fill the documents associated with a particular to a collection of APEX called PHASE_COLLECTION MPM_ENG_ID.
  Then when the user specify date_started and date_finished, it will update/insert the APEX collection first.
  Then the rank based on audit collection date
  http://www.Oracle-base.com/articles/Misc/overlapping-date-ranges.php
  then display the warning to ask the user to confirm message.
  
  But then I'm stuck at the step of updating COLLECTION of APEX.
  
  If anyone has any ideas on what is wrong, please help.
  
  Thanks in advance.
  
  Ann

  Your syntx error line number should give you the trick - it is not a member of the update, rather the SQL - you are referring to apex_collection, not apex_collections view dictionary.

  Scott

• Build a complicated procedure/function

  Hello world
  
  I am creating a complicated procedure.
  
  I have three columns:
  

  line     A          B        C
  1       5.5       3.2       -
  2       1.05     6.1       -
  3        0.6      7.8       -
  4        6.4     4.13      -
  5         -         -        8.98

  Column C contains a result. So, I need to find how this result was built. In other words, this procedure/function must answer the question:
  What are the numbers in columns A and B, which has contributed to achieve this result.
  In this example, we found that:
  

  C = B(1) + A(2) + A(3) + B(4) = 3.2 + 1.05 + 0.6 + 4.13 = 8.98

  (there is a condition: we cannot do so one number per line is selected.: A(1) + B(1).)
  
  Concerning
  
  Published by: zakaria84 on May 22, 2009 15:25
  
  Published by: zakaria84 on May 22, 2009 15:49

  Hello Zakaria,

  Here is a right solution with SQL:

  SQL> create table giventable (a,b,c)
    2  as
    3  select 5.5, 3.2, null from dual union all
    4  select 1.05, 6.1, null from dual union all
    5  select .6, 7.8, null from dual union all
    6  select 6.4, 4.13, null from dual union all
    7  select null, null, 8.98 from dual
    8  /
  
  Tabel is aangemaakt.
  
  SQL> create table resulttable as select * from giventable where 1=0
    2  /
  
  Tabel is aangemaakt.
  
  SQL> insert into resulttable
    2  select a
    3       , b
    4       , null
    5    from ( select case mod(trunc(l/power(2,line)),2) when 0 then a else null end a
    6                , case mod(trunc(l/power(2,line)),2) when 1 then b else null end b
    7                , sum(case mod(trunc(l/power(2,line)),2) when 0 then a else b end) over (partition by l) x
    8             from ( select a
    9                         , b
   10                         , row_number() over (order by null) - 1 line
   11                      from giventable
   12                     where c is null
   13                  )
   14                , ( select level - 1 l
   15                      from dual
   16                   connect by level <= power(2,(select count(*) from giventable where c is null))
   17                  )
   18         )
   19   where x = (select c from giventable where c is not null)
   20   union all
   21  select null
   22       , null
   23       , c
   24    from giventable
   25   where c is not null
   26  /
  
  5 rijen zijn aangemaakt.
  
  SQL> select * from resulttable
    2  /
  
           A          B          C
  ---------- ---------- ----------
                    3,2
        1,05
                   4,13
          ,6
                              8,98
  
  5 rijen zijn geselecteerd.
  

  Kind regards
  Rob.

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• How to migrate from MySQL to Oracle stored procedure

  Hi all

  I've migrated mysql 5.1.42 - enterprise-gpl-advanced DB for oracle sqldeveloper 3.1.07 tool.

  DB objects migrate successfully except stored procedures.

  I checked .sql and files... Capture process not captured SQL stored procedures.

  Could you please suggest where I can check correct error or how to fix this.

  Thanks in advance.

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• UNIX_TIMESTAMP and FROM_UNIXTIME from MySQL to ORACLE functions

  Hi all

  I'm migrating some functions and stored procedures in MySQL to ORACLE, and I the next instruction

  Set valuedat = FROM_UNIXTIME (valor + UNIX_TIMESTAMP ('2000-1-01 00:00:00 '));

  Since MySQL.

  Look, I found that:

  UNIX_TIMESTAMP ('2000-1-01 00:00:00 ')

  can be equivalent to the following query:

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  Specifically, I need to know how to build the equivalent in oracle for FROM_UNIXTIME and UNIX_TIMESTAMP functions

  Thank you and best regards!

  CRGM

  Hello

  These are functions that I built to solve the original requirement, thanks for all your comments.

  ************************************************************************************************************************************

  CREATE OR REPLACE FUNCTION FROM_UNIXTIME

  (

  TIMESTAMP_ NUMBER

  ) AS OF DATE OF RETURN

  NUMBER OF SECONDS_PER_DAY: = 86400;

  MASK (50 CHAR) VARCHAR2: = 'DD-Mon-YYYY HH24:MI:SS ";

  DATE OF REF_DATE;

  BEGIN

  REF_DATE: = TO_DATE ('01 - ENE - 1970 00:00:00 ', MASK);

  RETURN REF_DATE + (TIMESTAMP_/SECONDS_PER_DAY);

  END FROM_UNIXTIME;

  **********************************************************************************************************************************

  CREATE OR REPLACE FUNCTION UNIX_TIMESTAMP

  (

  DATE_ IN DATE

  ) RETURN AS NUMBER

  NUMBER OF SECONDS_PER_DAY: = 86400;

  NUMBER OF DIFF_BETWEEN_DATES;

  MASK (50 CHAR) VARCHAR2: = 'DD-Mon-YYYY HH24:MI:SS ";

  DATE OF REF_DATE;

  BEGIN

  REF_DATE: = TO_DATE ('01 - ENE - 1970 00:00:00 ', MASK);

  DIFF_BETWEEN_DATES: = TO_DATE (TO_CHAR (SYS_EXTRACT_UTC (DATE_), MASK), MASK)

  -REF_DATE;

  RETURN DIFF_BETWEEN_DATES * SECONDS_PER_DAY;

  END UNIX_TIMESTAMP;

  ******************************************************************************************************************************

  Concerning

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             select 1,'Hermann','LONDJI','STA001' from dual union all
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            ),
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             select 1,14,5 from dual
            )
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          a2.emp_firstname || ' ' || a2.emp_lastname supervisor
    from  b,
          a a1,
          a a2
    where a1.emp_number = b.emp_sub_mode(+)
      and a2.emp_number(+) = b.emp_sup_mode
  /
  
  EMP_NUMBER EMP_FIR EMP_LA SUPERVISOR
  ---------- ------- ------ --------------
           1 Hermann LONDJI Nadine YAYA
           5 Raoul   ESSOME Honore ONANA
          14 Honore  ONANA
           6 Nadine  YAYA
  
  SQL> 
  

  SY.