Dropping several tables

Hello

I have 3 tables, year, Gallery and photos. Tables of the year and the gallery are interconnected via the primary id key year tables and photos table is related to the gallery via the id primary key table tables Gallery, as follows: -.

Picture of the year

Year_ID

year

Gallery Table

gallery_id

Year_ID

name

Table photos

photo_id

gallery_id

image

Legend

I want to be able to delete a year, all the galleries related to the year and delete all the photos associated with these galleries in a single command. When a gallery and or a photo id does not exist, I still want to be abl eto remove the year. I think I have to do this by using a left join, but I'm struggling with the concept / the structure of the command.

Any pointers in the right direction would be greatly appreciated.

Thank you.

You don't mention what DBMS you are using. If your DBMS allows it, you can create your foreign key with cascading deletes constraints. There are some pitfalls with this then make sure you understand what you do.

If you do not want to go this route, many DBMS support several deletions from table, but I wouldn't recommend it. Personally, I'd build just 3 delete statements; start with photos, then the Gallery, and then the year.

Tags: Dreamweaver

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Join several Tables versioned

Hello

We are working on a data warehousing project and wonder how do to join several tables that each are versioned separately (type SCD 2 with a valid and valid to date).

Because for example, we get our client from a single source of information (id customer, name, etc.) and the information on the rate of customer from another source. The sources are different, we have the separate tables for them and each of them gets versioned independently.

Here's my customer table (with its own valid and valuable to the columns).

ID	Name of the customer	Valid from	Valid until the
1	CitiBank	1 JANUARY 14	JANUARY 1, 15
1	New CitiBank	2 JANUARY 15	FEBRUARY 1, 15
1	Latest CitiBank	2 FEBRUARY 15	APRIL 1, 15

And similarly the Client side ID and rating information.

ID	Note	Valid from	Valid until the
1	Platinum	1 JANUARY 14	FEBRUARY 1, 14
1	Premium	FEBRUARY 1, 14	1ST MARCH 15

I want to merge the two tables above and present information at a glance. I have some difficulty to determine validates the valid columns.

ID	Name of the customer	Note	Valid from (Calculated)	Valid until the (calculated)
1	CitiBank	Platinum	1 JANUARY 14	FEBRUARY 1, 14
1	CitiBank	Premium	FEBRUARY 1, 14	JANUARY 1, 15
1	New CitiBank	Premium	2 JANUARY 15	FEBRUARY 1, 15
1	Latest CitiBank	Premium	2 FEBRUARY 15	1ST MARCH 15

And it's the query I used to get the above result:

SELECT client. id ,

customer . name ,

CRM . level ,

Greatest (client. vld_fm , crm. vld_fm ),

Least (client. vld_to , crm. vld_to )

DE client client,

client_rating crm

OÙ client. id = crm. id

AND ( client. vld_fm <= crm. vld_fm

AND client. vld_fm <= crm. vld_to

AND client. vld_fm >= crm. vld_fm

AND client. vld_fm >= crm. vld_to )

OR ( client. vld_fm BETWEEN crm. vld_fm AND crm. vld_to )

OR ( client. vld_to BETWEEN crm. vld_fm AND crm. vld_to );

The problem is we have several data sources (and each with its own versions) and joins become so very very complex. Is there a better way to write the query?

Or maybe a better way to design our tables?

Thanks for your help.

Anand

Hello

you only need ranges that overlap to join.

Re: How do to sql query in a loop

Is a simpler way to test if the x_start to x_stop range comes into conflict with the range of y_start to y_stop

WHERE     x_start <= y_stop AND     y_start <= x_stop

In other words, two overlapping if and only if everyone will start before the other ends one. If this is not obvious (and it was certainly not clear to me when I heard it), then look at it this way: two ranges are not overlapping if and only if one of them starts after the end of the other.

Concerning

Marcus

outer join when there are several tables are involved

Could not put up the question correctly to the last channel, my problem is with the join when there are several tables are involved, this is just one example of the task that I have to carry.

Tab1 aura model id retailer_id information for all the weeks (from the first Monday) of the month of JUNE with cost and Helen

Tab1

model_id	retailer_id	sell_date	cost	Helene
1	12	June 3, 13	100	40
1

June 10, 13

200

17 June 13

300

24 June 13

400

June 3, 13

300

June 10, 13

200

17 June 13

300

24 June 13

400

Tab2:

each retailer belongs to a dealer, under the table has the same information

retailer_id	Dealer_id
12	100

100

101

Tab 3

There is a third layer where each dealership is having a garage band

Dealer_id	Dealer_group
100	1001

101

1001

102

2001

103

2001

104

3001

105

3001

Tab4:

Of this table for each model and dealer discount information for the month of June (every week)

model_id

Dealer_group

discount_date

discount

1001

June 3, 13

1001

June 10, 13

1001

17 June 13

1001

24 June 13

1001

June 3, 13

1001

June 10, 13

1001

17 June 13

1001

24 June 13

2001

June 3, 13

2001

June 10, 13

2001

17 June 13

2001

24 June 13

Master_info:

It's the main table which is the master table for model /retailer information

Model_id	retailer_id
1

Output

model_id

retailer_id

sell_date

cost

Helene

Final (cost-helene-discount)

June 3, 13

100

June 10, 13

200

160

17 June 13

300

270

24 June 13

400

350

June 3, 13

300

280

June 10, 13

200

160

17 June 13

300

270

24 June 13

400

350

June 3, 13

June 10, 13

17 June 13

24 June 13

June 3, 13

June 10, 13

17 June 13

24 June 13

June 3, 13

June 10, 13

17 June 13

24 June 13

June 3, 13

June 10, 13

17 June 13

24 June 13

For highted above records (model_id / retailer_id combination) there is no record in tab1 but they have entered in master_info then the recordings should come for all model_id/retailer_id with all the 0 values

Hello

Thanks for posting the sample data.

It is unclear what dates you want to include in the output. The following query shows how you can generate every Monday in a given range. If you only want to include the dates that are actually present in tabl1 and/or tab4, you can simplify this a bit.

WITH date_range AS

(

SELECT TRUNC (TO_DATE (' 3 June 2013', 'DD-Mon-YYYY'))

, 'IW '.

) AS first_monday

, TRUNC (TO_DATE (24 June 2013 ', 'DD-Mon-YYYY') + 6)

, 'IW '.

) AS last_monday

OF the double

)

all_mondays AS

(

First_monday SELECT + (7 * (LEVEL - 1)) AS sell_date

OF date_range

CONNECT BY LEVEL<= 1="" +="" (="" (last_monday="" -="">

/ 7

)

)

SELECT mi.model_id

mi.retailer_id

am.sell_date

, Cost of NVL (t1.cost, 0) AS

, NVL (t1.rebat, 0) IN the refund

, NVL (t1.cost, 0)

-(NVL (t1.rebat, 0))

+ NVL (t4.discount, 0)

) AS final

E master_info

CROSS JOIN all_mondays am

LEFT OUTER JOIN tab1 t1 ON t1.model_id = mi.model_id

AND t1.retailer_id = mi.retailer_id

AND t1.sell_date = am.sell_date

LEFT OUTER JOIN tab2 t2 ON t2.retailer_id = mi.retailer_id

LEFT OUTER JOIN tab 3 t3 ON t3.dealer_id = t2.dealer_id

LEFT OUTER JOIN tab4 t4 ON t4.model_id = t1.model_id

AND t4.dealer_group = t3.dealer_group

AND t4.discount_date = t1.sell_date

ORDER BY mi.retailer_id

mi.model_id

am.sell_date

;

The results are not exactly what said you you wanted. I suspect it's because of typos in that you posted.

Trigger on a several tables
IHAVE a requirement like this.but explained in the form of two table emp and Dept.

I have a table emp table(empno,ename,deptno) and dept (deptno, dname)
I have a third emp_details (empno, ename, deptno, dname) of table

I have a procedure that returns the empdetails
I have a query in th eabove procedure, select * from emp_details; that returns all the details.

I want to write a trigger of such that,.
If I insert or update a row in the emp and dept table and then he should get inserted/updated in the table of emp_details also.
I am able to write triggers ona single table. I can't get the rows inserted or updated when it comes to multiple tables.

Data:

create table emp
(key primary empno number,)
Ename varchar2 (20).
DEPTNO number
)

create table dept
(key primary number depno,)
DNAME varchar2 (20)
)

Insert into dept values(10,'hyderabad');
Insert into dept values(20,'bangalore');

Insert into emp values(1,'A',10);
Insert into emp values(2,'B',20);

CREATE TABLE EMP_DETAILS
AS
SELECT E.ENAME, E.EMPNO, E.DEPTNO, D.DNAME
Of
EMP E, DEPT. D
WHERE E.DEPTNO = D.DEPTNO;

CREATE OR REPLACE PROCEDURE PROC_EMP_DETAILS (P_EMPNO EMP. EMPNO % TYPE OUT, P_ENAME EMP. ENAME OUT TYPE, P_DEPTNO EMP %. DEPTNO % TYPE OUT, P_DNAME MIN. DNAME % OUT TYPE)
AS
/ * EXAMPLE OF CODE * /.
BEGIN
SELECT * FROM EMP_DETAILS;
END;
/

I tried like this

CREATE OR REPLACE TRIGGER TRIG_EMP_DETAILS
AFTER INSERT OR UPDATE ON EMP
FOR EACH LINE
REFERENCING OLD AS OLD AGAIN AS NEW
BEGIN
INSERT INTO EMP_DETAILS VALUES(:NEW.) EMPNO,: NEW. ENAME,: NEW. DEPTNO,?)

???? -As a column, we get dept table how to represent that?

Could you please guide me in this regard?

Thanks in advance
KVB
Trigger on a several tables

I think that you don't need triggers on several tables: one is enough:
```
CREATE OR REPLACE TRIGGER trig_emp_details
  AFTER INSERT OR UPDATE
  ON emp
  FOR EACH ROW
BEGIN
  INSERT INTO emp_details
    SELECT :new.empno, :new.ename, :new.deptno, dname
      FROM dept
     WHERE deptno = :new.deptno;
END;
```

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Hello

I am building an application that handles (APEX 4.0) material inventory. I have an entry page that adds data to two or more tables at once. The page has two forms on it pointing to two separate tables. However when I try to run the page, it fails and returns an error:

ORA-06550: line 1, column 437: PL/SQL: ORA-00904: "ORH_LAST_UPDATE_DATE": invalid identifier ORA-06550: line 1, column 7: PL/SQL: statement ignored
Error failed to process row in the IDD_ID_DATA table.

As far as I can see in the application, this column is not in question (I don't even do anything for her and she is nullable). I looked at the application itself as well as some research online but can't find anything useful...

So my question is this: is it possible to add several tables to a page? If yes how?

I'm new to APEX so any help would be greatly appreciated!
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I received an email from support of APEX team:

«The answer is simple, it's you will need manually code processes query (and DML) If you want to maintain multiple tables on a page (there is a limit of a table when you use the integrated process).»
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I've been playing with code PL/SQL and the final result is the following:

Start
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VALUES)
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Creating a combined chronology based on several chronologies in several tables
Hello
I need to extract a timeline for a customer based on valid_from and valid_to dates in several tables.
For example: I have a table named customers with an id, a valid_from a valid_to date and a table named contracts with contrat_name and customer_id and valid_from valid_to:

CUSTOMERS:
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1. 01.03.2010 | 01.01.4000

CONTRACTS:
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Contracted | 1. 01.03.2010 | 01.10.2010
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1. ContractB | 01.10.2010 | 01.01.4000

It works, but I get a problem whenever I have a point from the time there is no contract for a client, but I would always like to have these periods in my calendar:

Suppose the following data and the same select statement:

CUSTOMERS:
ID | VALID_FROM | VALID_TO
1. 01.03.2010 | 01.01.4000

CONTRACTS:
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ContractB | 1. 01.12.2010 | 01.03.2011

What I would now get would be:
CUSTOMER | CONTRACT | VALID_FROM | VALID_TO
1. Contracted | 01.05.2010 | 01.10.2010
1. ContractB | 01.12.2010 | 01.03.2011

But what I get is the following:
CUSTOMER | CONTRACT | VALID_FROM | VALID_TO
1. null | 01.03.2010 | 01.05.2010
1. Contracted | 01.05.2010 | 01.10.2010
1. null | 01.10.2010 | 01.12.2010
1. ContractB | 01.12.2010 | 01.03.2011
1. null | 01.03.2011 | 01.01.4000

What I won't is generate a result with contract = null any time, there is no contract because I actually want to join the chronology of several different tables into one and it would be very complicated to assume things based on what data can or can not be found in a specific table.

Thanks for any help or ideas,
Kind regards
Thomas
Hi, Thomas,.

Whenever you have a problem, after the sample data in a form that people can use to recreate the problem and test their ideas. CREATE TABLE and INSERT statements are great.
For example:
```
CREATE TABLE     customers
(     customer_id     NUMBER (6)     PRIMARY KEY
,     valid_from     DATE          NOT NULL
,     valid_to     DATE          NOT NULL
);

INSERT INTO customers (customer_id, valid_from, valid_to) VALUES (1, DATE '2010-03-01', DATE '4000-01-01');
INSERT INTO customers (customer_id, valid_from, valid_to) VALUES (2, DATE '2010-03-01', DATE '4000-01-01');

CREATE TABLE     contracts
(     contract_name     VARCHAR2 (15)     NOT NULL
,     customer_id     NUMBER (6)
,     valid_from     DATE          NOT NULL
,     valid_to     DATE          NOT NULL
);

INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
     VALUES            ('Contract 1a', 1,           DATE '2010-03-01', DATE '2010-10-01');
INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
     VALUES            ('Contract 1b', 1,           DATE '2010-10-01', DATE '4000-01-01');

INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
     VALUES            ('Contract 2a', 2,           DATE '2010-05-01', DATE '2010-10-01');
INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
     VALUES            ('Contract 2b', 2,           DATE '2010-12-01', DATE '2011-03-01');
```
If a customer contracts of n, then you might need as much as 2n + lines 1 output for this client:
(a) 1 row showing the period, not from the date of customers both valid_from 1st contract begins
(b) n lines indicating the periods under contracts
(c) n lines indicating the period right after each contract, until the following starts (or valid_to of the client, if there is no next contract)
However, you will have lines for periods not contacted ((a) or (c)) if their mandate is 0 days.

This sounds like a job for the UNION. Make a UNION 3 lanes in a subquery to generate (a), (b), and (c), and then put a WHERE clause on the combined, results to filter the lines not length 0.
In the query subsidiary UNION, (a) can be done with a query GROUP BY, and (c) can be done using the analytical function of LEAD.
```
WITH     union_data     AS
(
     SELECT       ua.customer_id
     ,       NULL               AS contract_name
     ,       MIN (ua.valid_from)     AS valid_from
     ,       MIN (oa.valid_from)     AS valid_to
     FROM       customers     ua
     JOIN       contracts     oa     ON     ua.customer_id     = oa.customer_id
     GROUP BY  ua.customer_id
     --
    UNION ALL
     --
     SELECT       customer_id
     ,       contract_name
     ,       valid_from
     ,       valid_to
     FROM       contracts
     --
    UNION ALL
     --
     SELECT       uc.customer_id
     ,       NULL               AS contract_name
     ,       oc.valid_to          AS valid_from
     ,       LEAD ( oc.valid_from
                 , 1
                 , uc.valid_to
                 ) OVER ( PARTITION BY  uc.customer_id
                    ORDER BY      oc.valid_from
                     )          AS valid_to
     FROM       customers     uc
     JOIN       contracts     oc     ON     uc.customer_id     = oc.customer_id
)
SELECT       *
FROM       union_data
WHERE       contract_name     IS NOT NULL
OR       valid_from     < valid_to
ORDER BY  customer_id
,       valid_from
;
```
Output:
```
CUSTOMER_ID CONTRACT_NAME   VALID_FROM VALID_TO
----------- --------------- ---------- ----------
          1 Contract 1a     01.03.2010 01.10.2010
          1 Contract 1b     01.10.2010 01.01.4000

          2                 01.03.2010 01.05.2010
          2 Contract 2a     01.05.2010 01.10.2010
          2                 01.10.2010 01.12.2010
          2 Contract 2b     01.12.2010 01.03.2011
          2                 01.03.2011 01.01.4000
```
Published by: Frank Kulash, April 20, 2011 06:51
Examples added

ALTER drop partition table for ORA-01031: insufficient privileges
Hello

Select * from version of v$.
BANNER
--------------------------------------------------------------------------------
Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE Production 11.2.0.2.0
AMT for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production

I have a table in the schema Y whose partition based on the value should be removed from schema X.

For example, ALTER TABLE DROP PARTITION Y.TAB_NAME FOR (4853);

I guess I gave almost all the privileges. Any thoughts?

Select * from DBA_TAB_PRIVS where table_name = 'Table_name' and recipient = 'X '.

DEALERSHIP OWNER TABLE_NAME GRANTOR PRIVILEGE HIERARCHY
------------------------------ ------------------------------ ------------------------------ ------------------------------ ---------------------------------------- --------- --------------------- --------- ---------------------
X Y TABLE_NAME Y ALTER YES NO
X Y TABLE_NAME DELETE YES NO
X Y TABLE_NAME Y INSERT YES NO
X Y TABLE_NAME SELECT YES NO
UPDATE TABLE_NAME Y Y X YES NO
INDEX OF TABLE_NAME Y Y X YES NO

6 selected lines
```
Additional Prerequisites for Partitioning Operations
If you are not the owner of the table, then you need the DROP ANY TABLE privilege in order to use the drop_table_partition or truncate_table_partition clause.
```
reference - http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statements_3001.htm

* That said I think seriously to give such a privilege [DROP ANY TABLE] to another schema.*

I hope this helps!

Published by: Sri on April 6, 2011 14:12

Dropping several tables

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