Select Fields From Across Multiple Tables?
Mar 25, 2011
I have had a google around and can't seem to find an answer as to how do do the following Select statement. i am wanting to Select the following fields from across multiple tables.
(field.table)
CustName.CUST
SalesNo.SALE
SalesDate.SALE
ItemDes.ITEM
Qty.SALEITEM
OrderComplete.SALEITEM
with 2 types of WHERE criteria:
WHERE SalesDate is between 'dateX' AND 'dateY'
and also WHERE OrderComplete = 'Y'
i understand this will require some sort of join in the statement so the keys for the different tables are as follows:
CUST
CustNo - PK
SALE
SalesNo - PK
CustNo - fk
ITEM
ItemNo - PK
SALEITEM
SalesNo -fk
ItemNo - fk (compound PK)
i have had a play around with using some joins & embedded statements
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Mar 29, 2011
I have two tables containing dates:
A
From____________To________
01.01.2009 || 01.01.2010
01.01.2013 || 01.10.2014
B
From____________To________
01.01.2007 || 01.01.2008
01.01.2011 || 01.10.2012
01.01.2009 || 01.01.2010
01.01.2015 || 01.01.2016
I need to get list of all entries from Table A and entries from B where dates are before min begin date from A or somewhere between any entry from A.
In this Example result:
From____________To________
01.01.2007 || 01.01.2008
01.01.2009 || 01.01.2010
01.01.2011 || 01.10.2012
01.01.2013 || 01.10.2014
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Aug 25, 2011
I am working on the following SQL select and I am having a mental block on how to get it fixed. I have two tables that I need to match on the codes in each table. If there is a just one record in Table1 with the same code as one record in table2 and both the date and name match then dont output those two records. Output all records if there are more than 1 record with the same code in each table. Below is some example data that is representive of a sample in the two tables and how the output should look based on that data:
Table1
code date name
aaaa 1/1/2003 billy bob
bbbb 2/2/2004 louis lewis
cccc 3/3/2005 joe crab
dddd 4/4/2006 mary little
eeee 5/5/2007 joe black
Table2
code date name
aaaa 2/2/2004 larry cole
aaaa 3/3/2005 nat king
bbbb 2/2/2004 louis lewis
cccc 3/3/2005 joe crab
cccc 6/6/2008 dennis jackson
dddd 7/7/2009 missy muffet
dddd 5/5/2007 joe black
eeee 8/8/2010 elton rocket
desired output results from select
aaaa 1/1/2003 billy bob aaaa 2/2/2004 larry cole
aaaa 1/1/2003 billy bob aaaa 3/3/2005 nat king
cccc 3/3/2005 joe crab cccc 3/3/2005 joe crab
cccc 3/3/2005 joe crab cccc 6/6/2008 dennis jackson
dddd 4/4/2006 mary little dddd 7/7/2009 missy muffet
dddd 4/4/2006 mary little dddd 7/7/2009 missy muffet
eeee 5/5/2007 joe black eeee 8/8/2010 elton rocket
Here is the select that I have so far:
select table1.rowid, table1_code, table1_date, table1_name,
table2.rowid, table2_code, table2_date, table2_name from table1, table2
where table1_code= table2_code
order by table1_code;
The above select gives me all records just fine, but does not eliminate single records that match. I tried using the Count(table1_code) > 1 and table2 code but I get a message about inproper grouping.
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Nov 22, 2010
i am trying to left join a selection of two or more tables. what i have found, and solved part of my problem, is that oracle left joins only the last table in the select statement ...
i.e : select * from A, B left join C on C.id = A.id wouldn't work because left join applies to B and not A.
but as my queries grow i need to make something as follows :
select * from A, B
left join C on (C.ID_A = A.ID and C.ID_B = B.ID)
[... evantually more left joins as the preceding one may go here]
this query works for DB2 but Oracle claims that "A"."ID" is an invalid identifier, while the B.ID is recognized since it's the last table stated before the "LEFT JOIN" keyword.
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Apr 8, 2010
i have two tables test1 and test2. i want to update the column(DEPT_DSCR) of both the tables TEST1 and TEST2 using select for update and current of...using cursor.
I have a code written as follows :
DECLARE
v_mydept1 TEST1.DEPT_CD%TYPE;
v_mydept2 TEST2.DEPT_CD%TYPE;
CURSOR C1 IS SELECT TEST1.DEPT_CD,TEST2.DEPT_CD FROM TEST1,TEST2 WHERE TEST1.DEPT_CD = TEST2.DEPT_CD AND TEST1.DEPT_CD = 'AA' FOR UPDATE OF TEST1.DEPT_DSCR,TEST2.DEPT_DSCR;
[code].......
The above code when run says that it runs successfully. But it does not updates the desired columns[DEPT_DSCR].
It only works when we want to update single or multiple columns of same table...i.e. by providing these columns after "FOR UPDATE OF"
I am not sure what is the exact problem when we want to update multiple columns of different tables.
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Oct 18, 2011
i have a query in this way
select field1,field2,field3 from Table1
union
select field1,field2,field3 from table2
In the query from table2 i am getting duplicate rows, HOW can i retrieve only distinct rows...Using distinct keyword did not work...if i have to post create and insert statements for this one...
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Jan 18, 2007
My task is to test a field in a certain database. We shall refer to the field as ship_to. There is an algorithm for which the field ship_to is populated and higher up in the algorithm, a variable we shall call X is created. The algorith states that I should assign the variable to ship_to unless X is = -1. If X is = -1, the algorithm continues with multiple joins and assignments. What would be the best way to go about coding this solution. There are 4 individual paths. I have only described the first path, but they are similiar in structure. I was thinking of using either Case's or decodes?The field ship_to is a number. I have already created a statement to test the sum of the Target, but now I need to test the entire algorithm to see if it too sums the Target.
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Jun 17, 2011
I'm updating a big table with an other one (see topic
[URL]........
I was wondering if I could do it without using the WHERE EXISTS condition. Let me explain better:
create table TEST
(
ENT_SIG VARCHAR2(10),
EMP_ID VARCHAR2(10),
DATE_START DATE,
DATE_END DATE
);
create table TEST2
(
ENT_SIG VARCHAR2(10),
EMP_ID VARCHAR2(10),
DATE_START DATE,
DATE_END DATE
);
insert into TEST (ENT_SIG, EMP_ID, DATE_START, DATE_END)
values ('014', '120', TO_DATE('20080101','YYYYMMDD'), TO_DATE('20080131','YYYYMMDD'));
insert into TEST (ENT_SIG, EMP_ID, DATE_START, DATE_END)
values ('014', '121', TO_DATE('20080201','YYYYMMDD'), TO_DATE('20080228','YYYYMMDD'));
[code].....
I'm asking if there's a way to do this:
update test a
set (date_Start, date_end) = (select date_start, date_end
from test2 b
where b.emp_id = a.emp_id
[code].......
Without using the WHERE EXISTS. I don't want to make two accesses to table2, I would like instead to do something like "If subquery returns a row, use it, else keep what you have in destination table".
Is there a way to do it without entering test2 twice?
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May 15, 2009
I am designing a database as a practice exercise, but have come across a problem.
Here is my design:
Branch Manager Employee
------- ---------- ----------
BranchID ---- ManagerID |---- EmpoyeeID
... | EmployeeID ---- ...
Manager ---- EmployeeIDOfManager
...
Branch
Note: The ... in the tables are just placements symbolizing that there are multiple irrelevant (to this thread) fields.
The problem is with the field highlighted in italics whilst the primary keys are in bold. I need to somehow retrieve that ID, but I can't create a many-to-many relationship.
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Dec 8, 2011
I'm trying to select only codes from a column that are above a certain length. how would this be achieved? I've tried char_length(fieldname) > x in the where clause but i'm getting the error ORA-00904: "char_length" invalid identifier.
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Jul 9, 2012
NGFID;RECTYPE;RECNAME
25;7;POLES
PARENT
CHILD;1401;9845075;2020
817;8;SUPPORT
PARENT
CHILD
Required output:-
AREA_SRNO = 1
AREA_NAME = '3rivieres.export.ngf'
File :-mauri.export.ngf
NGFID;RECTYPE;RECNAME
257;7;POLES
PARENT
CHILD;1401;9845075;2020
8174;8;SUPPORT
PARENT
CHILD
Required output:-
AREA_SRNO = 2
AREA_NAME = 'mauri.export.ngf'....etc
CREATE TABLE NGF_REC_LINK
(
AREA_SRNO NUMBER(2),
AREA_NAME VARCHAR2(40),
NGFID NUMBER(20),
TABLENAME VARCHAR2(40),
PARENT VARCHAR2(200),
[code].......
find the ctl file (ngf_test.ctl) and modify the ctl file as per my requirement.
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Jul 24, 2013
I have table A.Security:
CouponIssue_nameQuantity_typeCurrencySec_TypeSec_alias
1 a 56 USD AB 676
2 b 45 INR AB 143
3 c 32 JPY BA 200
and Table B.Security:
CouponIssue_nameQuantity_typeCurrencySec_TypeSec_alias
1 a 33 USD OB 676
9 b 21 NZD AC 143
8 c 19 GBP CA 200
build a Stored Proc which compares sepecific fields in the 2 tables and reports into a new table as:
A.Security.sec_aliasB.Security.sec_aliastable fieldA-valueB-value Compare
676 676 Security Currency USD USD Match
143 143 Security Currency INR NZD Not-Match
Fields to be compared are:
Quantity_type
Currency
Sec_type
The join between the tables A and B can be made on Sec_alias.Also, this is just a single pair of tables. Further I need to compare 5 more pairs of tables after this and report out of the new table.
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Jul 17, 2012
write a query to delete similar records in particular fields(columns) in different tables.
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Feb 21, 2010
I'm trying to do a sum over 2 different tables but can't get it to work...This is the idea:I have a table A with client ID, time-id (per day), purchase amount and segment code.
In another table (let call it B) I have a lot of client ID's and also their purchase amount, time-id and segment code. I want to sum the purchase amount for every client from table A and B for clients with certain segment code from table B.
This is what I have now:
select client_id, purchase_amountA+ purchase_amountB from tableA, tableB where
A.client_id = B.client_id
and time_id between 20090101 and 20091001
and B.segment_code = 'A'
This does the job, but it selects only client_id's which are in both tables. I want to select all client_id from table B with segment_code 'A' and add the purchase_amount from table A to their purchase amount from table B, at least, if they have any purchase amount in table A.
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Sep 30, 2010
Video Rental Shop
Each customer has a video card , When Customer rent a CD , Shopkeeper register an issue date and a Return Date . If customer return CD after Return Date Then There will be a fine of 2 Dollor .
After every 6 Months The shop Keeper review each customer Account , and Send Gifts to those customer whose Total Amount is More than 50 Dollar .and also send letters to those whose Fines Are More than 20 Dollor .
Now I am unable to understand that how many table i need to create for this .
What i have created so far is given below ,
When Customer Rent a CD then Shopkeeper will submit Following Information .
Customer_id 101
Issue DateDATE
Expected_return_dateDATE
Original_return_date-
Fine -
Total_Amount -
And at the time of return , he will Put these information .
Customer_id 101
Issue DateDATE
Expected_return_dateDATE
Original_return_date DATE
Fine 2
Total_Amount5
But Do i need to create another table for each customer also ? That will store customer total amount , total Fines ,and shopkeeper will view it after every six months. Which type oo table i need to create ?
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Jan 19, 2011
I need to calculate a list of people, who got some services more that 2 times with the same service koda (pas_kodas) to the same person (zmo_kodas). It should not depend on report number.
[URL]...
What I get is in green (services are calculated more than 2 times BUT in the same report).
What I need is in red: calculate servises more that 2 times ACCROSS all reports to the same person (zmo_kodas).
[URL]...
One person (zmo_kodas) can have a lot of reports (ats_nr).
Every report can have one or more services (pas_kodas).
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Mar 2, 2011
I have a primary table and some secondary tables. I need to use the key from Primary table and get the sum/totals from the other tables with a single query.
For example, I have 3 tables employee, employeesal and employeerewards in which employee is the primary table. I need to get the total salary for an employee from employeesal table and total rewards from the employeerewards table using one query.
I am pasting the test data below:
create table employee (eno number(9), ename varchar2(40));
insert into employee values(1,'Jack');
insert into employee values(2,'Jim');
[Code]....
I am looking for a better way of doing this in terms of performance. In my projecct, those 3 tables are very big tables and I doubt if I do two inner queries and then use a outer query may not be the best way to do it.
Is there any better way to write this query in terms of performance?
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Mar 29, 2011
Here is what I'm trying to do:
I have three tables:
TABLE1 TABLE2 TABLE3
NCI 1AB OPEN
NCI (NULL) (NULL)
INV (NULL) (NULL)
NCI 2AB REOPEN
What I want to do is to return all of the rows from TABLE1 that are NCI regardless, and if they are NCI, I want to return the corresponding records from TABLE2 and TABLE3.
If TABLE1 has a record of NCI but there are no corresponding records in TABLE2 or TABLE3, then of course the columns for TABLE2 and 3 would be blank.
I can get all of the NCI records from TABLE1 when I LEFT JOIN with TABLE2, but when I try to specify TABLE3 in the FROM statement, only the records that are NCI in TABLE1 AND have data in TABLE2 are returned, not just all records with NCI in TABLE1.
Let me know if I can further clarify.
I know that you do not have access to my tables, but here is an example of my code so that you may understand my quandary further:
SELECT l.sku AS "SKU",
l.loc AS "LOC",
l.qty AS "QTY",
o.ncikey AS "NCI",
r.description AS "NCI DESC",
o.qtyexpected AS "NCI QTY EXP",
o.qtyreceived AS "NCI QTY REC",
o.loc AS "NCI LOC",
o.status
[Code]...
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Feb 11, 2011
What are some performance issues you might run into when having to query 3 or 4 tables at a time.
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Feb 12, 2012
Can I use MERGE statement to insert the same thing into multiple tables?
Like below--
Merge into tbl1
using tbl2
when matched then update...
when not matched then insert all.
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Jan 19, 2011
I need to calculate a list of people, who got some services more that 2 times with the same service koda (pas_kodas) to the same person (zmo_kodas). It should not depend on report number.
[URL]
What I get is in green (services are calculated more than 2 times BUT in the same report).
What I need is in red: calculate servises more that 2 times ACCROSS all reports to the same person (zmo_kodas).
[URL]
One person (zmo_kodas) can have a lot of reports (ats_nr). Every report can have one or more services (pas_kodas).
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May 1, 2013
I need to set up a trigger to check and enforce that the age of an employee at hire date is older than 18 when a new record is inserted. The age is on the PERSON table, and the hire date is on the EMPLOYEE table.
My attempt:
CREATE TRIGGER AGE_HIRE
BEFORE INSERT OR UPDATE ON EMPLOYEE
FOR EACH ROW
BEGIN
IF FLOOR EXTRACT (YEAR FROM (PERSON.BIRTHDATE - EMPLOYEE.HIREDATE)) > 18
THEN DROP NEW
ELSE INSERT NEW
FROM PERSON, EMPLOYEE
END;
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Apr 4, 2010
I tried to split the query into 2 parts , the outcome is fine but when ever i merge them ( include other table fields ) . The result is 3X3 rows .. it should be just 3 rows
The First Query ( Is running fine , 3 Rows returned )
SELECT
WORKORDER.WONUM,
WORKORDER.ESTSERVCOST,
WPM.ITEMNUM,
WPM.ITEMQTY,
[code]......
The Second Query ( Is running fine also, 3 Rows returned )
SELECT
WORKORDER.WONUM,
WORKORDER.ESTSERVCOST,
WP.DESCRIPTION,
WP.LINECOST
FROM WORKORDER , WPSERVICE WP
WHERE PARENT IS NULL
AND WORKORDER.WONUM = WP.WONUM
AND WORKORDER.WONUM = :WO
The problem occurs when i try to merge both these queries , as the result shows 9 rows ..
SELECT
WORKORDER.WONUM,
WORKORDER.ESTSERVCOST,
WPM.ITEMNUM,
WPM.ITEMQTY,
[code]......
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Nov 2, 2010
I have more 100 partition in a table, I would like to query 10 partitions alone in single statement, Hope it could be possible like query data for single partitions, provide the syntax for the same.
Because if I try to query for all the partition then the query is Hanging due to the large no of data, then I can query single partition by partition then it takes more than a day. so, I would like query data for 10 partition in a single select.
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Apr 23, 2013
I have a SELECT INTO statement as follows:
-----
SELECT SUM(s1.PRODUCT_QTY) INTO anz
FROM EXACTS_TRANSACTION_HAS_PDTS s1, EXACTS_TRANSACTIONS s2, EXACTS_PRODUCTS s3
WHERE s1.SALES_ORDER_ID = s2.SALES_ORDER_ID
AND s2.REGION = 'ANZ'
AND s1.GCM_OPP_ID = s2.GCM_OPP_ID
[Code]..
The statement sums up all the products attributed to the region ANZ and stores it in a NUMBER variable called anz.
The issue is that I have multiple regions: ANZ, JP, ASEAN etc. Wat I would do is to create a statement for each and every region. Is there a way to consolidate them all into a single statement. that means something like
-----
SELECT SUM(s1.PRODUCT_QTY),SUM(s1.PRODUCT_QTY),SUM(s1.PRODUCT_QTY) INTO anz, jp, asean
FROM EXACTS_TRANSACTION_HAS_PDTS s1, EXACTS_TRANSACTIONS s2, EXACTS_PRODUCTS s3
WHERE ..................
-----
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Jul 22, 2010
When I use the below code in my perl script (it is oracle database):
$query = "select a.sub_id, b.name from subscribertable a, invitationBin b where a.subscriberid=b.subscriberid";
$sth = $dbh->prepare($sub_query) or die "SELECT-Query failed";
everything is ok... and when I try to add a third table...
$query = "select a.sub_id, b.name, c.phone from subscribertable a, invitationBin b, personalDet c where a.subscriberid=b.subscriberid and b.subIdx=c.subIdx";
$sth = $dbh->prepare($sub_query) or die "SELECT-Query failed";
this fails... it seems like it doesnt let me add 3 tables in the SELECT query through perl script. The strange is that when I test this query with Oracle SQL Developer, it works fine...!
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Aug 9, 2012
I have a view that contain multiple tables with ( UNION all ) clause , is there any way that if i query from this view I can explicitly specify the table that i need the data from ?
Let say i have view that contain salaries of 2011
Create view sals_2011 as select * from sals_jan2011 union all sals_feb2011 ..... union all select * from sals_dec2011.
if i issued select * from sals_2011 where emp_id >500 and date < 01-feb-2011 the explain plan show me that full tables and indexes are in processing, while i know that i need only to scan sal_jan2011, and of course it is taking much longer time than selecting from the original table only.
I am using oracle RAC 11g R2
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Oct 8, 2010
I've been given the task of importing an XML file into multiple tables within our database using PL / SQL and I am wondering what the best approach would be.
The files will be quite large and I need the code to be as flexible as possible.
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Apr 28, 2011
Suppose a view is created using multiple tables. Can we update the view? And when we update the view will it effect the base table?
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Aug 26, 2010
I am issuing an update statement in which I am using multiple tables it is giving me an error " set keyword missing"
update E_CONT_DETAIL_NUMB_VALUE ecdnv, y_obj_category yoc, t_contact tc
set ecdnv.ContTPRecCount = 1000
where tc.default_category_id = (select primary_key from y_ojb_category where tree_position = 'CONT')
and ecdnv.detail_field_id=tc.default_category_id;
update E_CONT_DETAIL_NUMB_VALUE ecdnv, y_obj_category yoc, t_contact tc
*
ERROR at line 1:
ORA-00971: missing SET keyword
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