SQL query to search for a single line

Hi All-
I have a requirement where I have to get the id who subscribe only to a single course based on data below.

ID courses
103812 CFH
102968 REP
103812 DFH
DFH 102968
103071 DFH
CFH 102968

CREATE TABLE classes
(IDENTIFICATION NUMBER,
course VARCHAR2 (3));

insert into class values (103812, "CFH");
insert into class values (102968, "REP");
insert into class values (103812, "DFH");
insert into class values (102968, "DFH");
insert into class values (103071, "DFH");
insert into class values (102968, "CFH");

SELECT THE ID
IN THE COURSE OF
GROUP BY ID
AFTER HAVING COUNT (RACE) = 1;

Tags: Database

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SQL query to search for the line that contains the identifier for each consecutive group

Hello

I'm on 11.2.0.3 Enterprise Edition.

I have a strange request here - do not know if this is possible without going to procedure...

Given these data of the sample:

create table test_status (
  status varchar2(10),
  revision_id number,
  revision_timestamp timestamp);

insert into test_status values ('PROPOSED', 1, systimestamp);
insert into test_status values ('PROPOSED', 2, systimestamp);
insert into test_status values ('PROPOSED', 3, systimestamp);
insert into test_status values ('ACTIVE', 4, systimestamp);
insert into test_status values ('ACTIVE', 5, systimestamp);
insert into test_status values ('PROPOSED', 6, systimestamp);
insert into test_status values ('PROPOSED', 7, systimestamp);
insert into test_status values ('ACTIVE', 8, systimestamp);
insert into test_status values ('ACTIVE', 9, systimestamp);
insert into test_status values ('FINISHED', 10, systimestamp);
insert into test_status values ('FINISHED', 11, systimestamp);
insert into test_status values ('FINISHED', 12, systimestamp);

Gives me:

SQL> select *
  2  from test_status
  3  order by revision_id;


STATUS     REVISION_ID REVISION_TIMESTAMP
---------- ----------- -----------------------------
PROPOSED             1 25-SEP-14 04.49.47.954000 PM
PROPOSED             2 25-SEP-14 04.49.47.962000 PM
PROPOSED             3 25-SEP-14 04.49.47.966000 PM
ACTIVE               4 25-SEP-14 04.49.47.969000 PM
ACTIVE               5 25-SEP-14 04.49.47.972000 PM
PROPOSED             6 25-SEP-14 04.49.47.976000 PM
PROPOSED             7 25-SEP-14 04.49.47.979000 PM
ACTIVE               8 25-SEP-14 04.49.47.982000 PM
ACTIVE               9 25-SEP-14 04.49.47.987000 PM
FINISHED            10 25-SEP-14 04.49.47.991000 PM
FINISHED            11 25-SEP-14 04.49.47.996000 PM
FINISHED            12 25-SEP-14 04.49.48.000000 PM


12 rows selected.
ws selected.

I want to get this result:

STATUS     REVISION_ID REVISION_TIMESTAMP
---------- ----------- ----------------------------
PROPOSED             3 25-SEP-14 04.49.47.966000 PM
ACTIVE               5 25-SEP-14 04.49.47.972000 PM
PROPOSED             7 25-SEP-14 04.49.47.979000 PM
ACTIVE               9 25-SEP-14 04.49.47.987000 PM
FINISHED            12 25-SEP-14 04.49.48.000000 PM

Then query the table ordered by Revision_Id, I would get the line containing the highest revision for each consecutive group of status values. I am able to get the line containing the highest revision for each separate status, value, but I can't deal with the scenario where a state value reappears later. In the case of the real world, it is a workflow and I need to take into account the fact that an element through the workflow may be redirected to the back front she proceeds forward again.

Hope it makes sense.

Thank you

John

Hi, John,.

John OToole (Dublin) wrote:

Hello

I'm on 11.2.0.3 Enterprise Edition.

I have a strange request here - do not know if this is possible without going to procedure...

...

Do not no stinkin' procedure:

WITH got_grp_id AS

(

SELECT the status, revision_id, revision_timestamp

ROW_NUMBER () OVER (ORDER BY revision_id)

-ROW_NUMBER () (PARTITION STATUS

ORDER BY revision_id

) AS grp_id

OF test_status

)

SELECT status

MAX (revision_id) AS revision_id

MAX (revision_timestamp) DUNGEON (DENSE_RANK LAST ORDER BY revision_id)

AS revision_timestamp

OF got_grp_id

GROUP BY status, grp_id

ORDER BY revision_id

;

For an explanation of the technique of Difference sets used here, see

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Stuck on a sql query to search for records that have the same parent child records

Oracle 10 g 2 Enterprise Edition.

Hello

I'm writing a logic to find records in a parent table, who have the same values in a child table.
This is part of a larger application, but I am stuck on that part for now, so I have mocked some of the below simplified tables to capture the heart of the
the problem is that I'm stuck.
Let's say I have a responsible parent, child employee table table and there are a number of many relationships between them.
The aptly named Join_Table manages the relationship between them. If a manager can manage several employees, an employee can be managed by
many managers.

I have a feeling it's stupidly easy, but it seems to me having a bad episode of brain freeze today!

-- parent table
CREATE TABLE manager (
 id      number primary key,
 name      varchar2(100));

-- child table 
CREATE TABLE employee (
 id          number primary key,
 name      varchar2(100));

-- link table
CREATE TABLE join_table (
 manager_id          NUMBER, 
 employee_id      NUMBER,
 CONSTRAINT join_table_pk PRIMARY KEY (manager_id, employee_id),
 CONSTRAINT manager_fk FOREIGN KEY (manager_id) REFERENCES manager(id),
 CONSTRAINT employee_fk FOREIGN KEY (employee_id) REFERENCES employee(id) 
 );

-- Insert some managers
INSERT INTO manager (id, name) VALUES (1, 'John');
INSERT INTO manager (id, name) VALUES (2, 'Bob');
INSERT INTO manager (id, name) VALUES (3, 'Mary');
INSERT INTO manager (id, name) VALUES (4, 'Sue');
INSERT INTO manager (id, name) VALUES (5, 'Alan');
INSERT INTO manager (id, name) VALUES (6, 'Mike');

-- Insert some employees 
INSERT INTO employee (id, name) VALUES (101, 'Paul');
INSERT INTO employee (id, name) VALUES (102, 'Simon');
INSERT INTO employee (id, name) VALUES (103, 'Ken');
INSERT INTO employee (id, name) VALUES (104, 'Kevin');
INSERT INTO employee (id, name) VALUES (105, 'Jack');
INSERT INTO employee (id, name) VALUES (106, 'Jennifer');
INSERT INTO employee (id, name) VALUES (107, 'Tim');

-- Insert the links
-- John manages Paul, Simon, Ken
INSERT INTO join_table (manager_id, employee_id) VALUES (1, 101);
INSERT INTO join_table (manager_id, employee_id) VALUES (1, 102);
INSERT INTO join_table (manager_id, employee_id) VALUES (1, 103);
-- Bob manages Paul, Simon, Kevin, Jack
INSERT INTO join_table (manager_id, employee_id) VALUES (2, 101);
INSERT INTO join_table (manager_id, employee_id) VALUES (2, 102);
INSERT INTO join_table (manager_id, employee_id) VALUES (2, 104);
INSERT INTO join_table (manager_id, employee_id) VALUES (2, 105);
-- Mary manages Jennifer, Tim
INSERT INTO join_table (manager_id, employee_id) VALUES (3, 106);
INSERT INTO join_table (manager_id, employee_id) VALUES (3, 107);
-- Sue manages Jennifer, Tim
INSERT INTO join_table (manager_id, employee_id) VALUES (4, 106);
INSERT INTO join_table (manager_id, employee_id) VALUES (4, 107);
-- Alan manages Paul, Simon, Ken, Jennifer, Tim
INSERT INTO join_table (manager_id, employee_id) VALUES (5, 101);
INSERT INTO join_table (manager_id, employee_id) VALUES (5, 102);
INSERT INTO join_table (manager_id, employee_id) VALUES (5, 103);
INSERT INTO join_table (manager_id, employee_id) VALUES (5, 106);
INSERT INTO join_table (manager_id, employee_id) VALUES (5, 107);
-- Mike manages Paul, Simon, Ken
INSERT INTO join_table (manager_id, employee_id) VALUES (6, 101);
INSERT INTO join_table (manager_id, employee_id) VALUES (6, 102);
INSERT INTO join_table (manager_id, employee_id) VALUES (6, 103);

-- For sanity
CREATE UNIQUE INDEX employee_name_uidx ON employee(name);

If I ask for Manager John, so I want to find other managers who manage the exact list and even employees.
Answer should be Mike.
If I ask for Manager of Mary, the answer should be Sue.

This query will give me the list of managers who manage some of the same employees as John, but not the same employees accurate...

SELECT DISTINCT m.name AS manager
FROM manager m, join_table jt, employee e
WHERE m.id = jt.manager_id
AND jt.employee_id = e.id
AND e.id IN (
     SELECT e.id
     FROM manager m, join_table jt, employee e
     WHERE m.id = jt.manager_id
     AND jt.employee_id = e.id
     AND m.name = 'John')
ORDER BY 1;

I thought about using set operations to find managers with a list of employees less than my employees is null and where my employees under their list of employees is null. But there must be an easier way more elegant.
Any ideas?
BTW, I need to run as a batch on tables with > 20 million rows so the efficiency of queries is key.

What about...

WITH manager_list AS
(
 SELECT name,
        LTRIM(MAX(SYS_CONNECT_BY_PATH(id,','))
        KEEP (DENSE_RANK LAST ORDER BY curr),',') AS employees
 FROM   (SELECT m.name,
                e.id,
                ROW_NUMBER() OVER (PARTITION BY m.name ORDER BY e.id) AS curr,
                ROW_NUMBER() OVER (PARTITION BY m.name ORDER BY e.id) -1 AS prev
         FROM   manager m,
                join_table jt,
                employee e
  WHERE m.id           = jt.manager_id
  AND   jt.employee_id = e.id
  AND   m.name = :P_MANAGER)
  GROUP BY name
  CONNECT BY prev = PRIOR curr AND name = PRIOR name
  START WITH curr = 1
), all_list AS
(
 SELECT name,
        LTRIM(MAX(SYS_CONNECT_BY_PATH(id,','))
        KEEP (DENSE_RANK LAST ORDER BY curr),',') AS employees
 FROM   (SELECT m.name,
                e.id,
                ROW_NUMBER() OVER (PARTITION BY m.name ORDER BY e.id) AS curr,
                ROW_NUMBER() OVER (PARTITION BY m.name ORDER BY e.id) -1 AS prev
         FROM   manager m,
                join_table jt,
                employee e
  WHERE m.id           = jt.manager_id
  AND   jt.employee_id = e.id)
  GROUP BY name
  CONNECT BY prev = PRIOR curr AND name = PRIOR name
  START WITH curr = 1
)
SELECT a.*
FROM   manager_list m,
       all_list a
WHERE  m.employees = a.employees

Would be easier in 11g, but I do not have a facility here so this is based on 10g.

See you soon

Ben

query to search for the user of the application
Hello

What is the query to search for the user of the application in the sql command?

I tried the query below
```
select app_user from dual;
```
```
app_user invalid identifier
```
Thank you.
Hello skud,
The following SQL statement will give you the APP_USER which is an environmental variable in the APEX:
```
SELECT v('APP_USER') FROM DUAL;
```
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PL/SQL muliple line insert for a single line

I need to insert several lines in a single line. Here is the table structures and sample data

CREATE TABLE TEST_SAMPLE (NAME VARCHAR2(20), ATTR_1 VARCHAR2(20), ATTR_2 VARCHAR2(20), ATTR_3 VARCHAR2(20),ATTR_4 VARCHAR2(20));

CREATE TABLE TRANSACTION (NAME VARCHAR2(20), ATTR VARCHAR2(20))

insert into TEST_SAMPLE (NAME, ATTR_1, ATTR_2, ATTR_3,ATTR_4) values ('hello','asd','fgh','ert',null);

For the anecdote above in the TEST_SAMPLE table, three records must be populated\inserted in TRANSACTION table. In PL/SQL
stored procedure I am insert records of TRANSACTIONS when ATTR_1 or ATTR_2 or ATTR_3 or ATTR_4 is not null.

Please help me to find a better way to insert above in table TRANSACTION?

Like this...

SQL> ed
Wrote file afiedt.buf

  1  insert all
  2    when 1=1 then
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 15        ,'ert' as attr_3
 16        ,null as attr_4
 17* from dual x
SQL> /

4 rows created.

SQL> select * from test_sample;

NAME                 ATTR_1               ATTR_2               ATTR_3               ATTR_4
-------------------- -------------------- -------------------- -------------------- --------------------
hello                asd                  fgh                  ert

SQL> select * from transaction;

NAME                 ATTR
-------------------- --------------------
hello                asd
hello                fgh
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Hello

I am trying to get the result of a simple sql query,
If there is no row returned, he would have "No. ROWS" in the result set.
Other wise all the rows containing data is necessary.

Let me know how this could be achieved. Under query works for the latter and not first case as mentioned below

OUTPUT

+ (box 1) when we use B_ID = 123456 +.

IDS
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+ (box 2) when we use B_ID = 12345 +.
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Hello

I think you want to put this on a report or something. I have what would be easier to do this logic there. But if you want that this is possible.
Like this

with
temp_aaa as
(select '111' a_id ,'12345' b_id from dual union all
select '222'      ,'12345'  from dual union all
select '333'      ,'12000'  from dual union all
select '444'      ,'10000'  from dual
)
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from
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In addition, you mix var and number of always use the same type or convert explicitly (to_number or to_char)

WITH
MATCH_ROWS AS
(
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--                                                    varchar2(10)   number
),
...

And again in the

                  THEN
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--                                                             varchar2(10)   number

Kind regards

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Published by: auxilia on November 7th, 2009 06:25

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SQL>

SY.

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