I have a below query
How to use full outer join for TABLE T4 for getting all records?
WHERE
(DB.T4.AUTH_REV_NO=DB.T2.AUTH_REV_NO
AND DB.T4.AUTH_NO=DB.T2.AUTH_NO)
AND (DB.T2.AUTH_CURR_IN='Y' )
AND (DB.T3.AUTH_NO=DB.T2.AUTH_NO)
AND (DB.T3.AUTH_REV_NO=DB.T2.AUTH_REV_NO )
AND (DB.T6.FNC_ID=DB.T4.FNC_ID)
AND (DB.T7.FNC_SEG_ID=DB.T6.FNC_SEG_ID)
AND (DB.T1.SCT_ID(+)=DB.T7.SCT_ID
AND DB.T1.FNC_SEG_ID(+)=DB.T7.FNC_SEG_ID)
AND (DB.T8.NDE_ID=DB.T12.NDE_ID)
AND (DB.T7.FNC_SEG_ID=DB.T8.FNC_SEG_ID)
AND (DB.T7.SCT_ID=DB.T8.SCT_ID)
AND ((DB.T12.NDE_ID=DB.T6.NDE_STRT_ID)
OR (DB.T12.NDE_ID=DB.T6.NDE_END_ID))
AND (DB.T5.FNC_ID(+)=DB.T4.FNC_ID)
AND (T13_A4.REF_ID(+)=DB.T5.REF_TONE_TYP_ID)
AND (fne.FNC_SEG_ID=DB.T8.FNC_SEG_ID)
AND (fne.NDE_ID=DB.T8.NDE_ID)
AND (fne.SCT_ID=DB.T8.SCT_ID)
AND fnode.NDE_ID=DB.T6.NDE_STRT_ID
AND tnode.NDE_ID=DB.T6.NDE_END_ID
AND (DB.T4.REF_FNC_TYP_ID=T13_A1.REF_ID)
AND (ne_port.NDE_EQP_ID=fne.NDE_EQP_ID)
AND (ne_port.NDE_EQP_PRN_ID=ne_card.NDE_EQP_ID)
AND (ne_card.NDE_EQP_PRN_ID=ne_shelf.NDE_EQP_ID)
AND (ne_shelf.NDE_EQP_PRN_ID=ne_rack.NDE_EQP_ID)
AND (eq.EQP_ID=ne_card.EQP_ID)
AND (eq.REF_EQP_CLS_ID=T13_A2.REF_ID)
AND (DB.T3.REF_AUTH_STS_ID=T13_A3.REF_ID)
AND (DB.T3.AUTH_STS_ID
IN (SELECT MAX(DB.T3.AUTH_STS_ID) FROMDB.T3
WHERE (DB.T3.AUTH_NO,DB.T3.AUTH_REV_NO)
IN
(SELECT
DB.T3.AUTH_NO,
MAX(DB.T3.AUTH_REV_NO)
FROM
DB.T3
GROUP BY
DB.T3.AUTH_NO)
GROUP BY
DB.T3.AUTH_NO))
How to use full outer join for TABLE T4 and for COLUMN FNC_TONE_LVL_QT to get all records.
Please help.
You posted a whole lot of "joins". I'm not going to rewrite it for you, but - I'd suggest you to switch to a more recent explicit JOIN syntax which makes things somewhat simpler and easier to understand as you'd separate joins from conditions. Moreover, it allows you to outer join the same table to more than just one another table, which is impossible with the old (+) Oracle's outer join operator.
Something like this
select ...
from table_1 a left join table_2 b on a.id = b.id
full outer join table_3 c on c.id = a.id
...
Related
I'm migrating a client's software database from Oracle to PostgreSQL, and I have some trouble understanding a query, what it does, and consequently how to migrate it.
The query is:
SELECT *
FROM TBL1, TBL2, TBL3, TBL4
WHERE TBL3.Project_ID = TBL1.Project_ID
AND TBL2.Type_ID = TBL1.Type_ID
AND TBL4.PROPERTY_NAME(+)='Id'
AND TBL4.Entity_ID(+)=TBL1.Entity_ID
And the part I don't get, is the outer join (+) on 'Id'.
A join on a table, OK, but on a string? I've no idea of what it does.
Do someone has an idea?
Thanks.
TBL4.PROPERTY_NAME(+)='Id' means when the line was inner joined, then the value has to be 'Id', but when the line was outer joined, the condition is evaluated as true
however you should rewrite the statement to the standard as:
SELECT *
FROM TBL1
JOIN TBL2 ON TBL2.Type_ID = TBL1.Type_ID
JOIN TBL3 ON TBL3.Project_ID = TBL1.Project_ID
LEFT JOIN TBL4 ON TBL4.Entity_ID=TBL1.Entity_ID AND TBL4.PROPERTY_NAME='Id'
This is the equivalent of the following query using ANSI join syntax:
SELECT *
FROM TBL1 t1
INNER JOIN TBL2 t2 ON (t1.Type_ID = t2.Type_ID)
INNER JOIN TBL3 t3 ON (t3.Project_ID = t1.Project_ID)
LEFT JOIN TBL4 t4 ON (t4.Entity_ID = t1.Entity_ID AND t4.PROPERTY_NAME = 'Id')
You're not joining to a string, merely specifying a join condition that's based on one.
I have two tables A and B that both have a column id. I wish to obtain ids from A that are not present in B. The obvious way is:
SELECT id FROM A WHERE id NOT IN (SELECT id FROM B)
Unfortunately, Hive doesn't support in, exists or subqueries. Is there a way to achieve the above using joins?
I thought of the following
SELECT A.id FROM A,B WHERE A.id<>B.id
But it seems like this will return the entirety of A, since there always exists an id in B that is not equal to any id in A.
You can do the same with a LEFT OUTER JOIN in Hive:
SELECT A.id
FROM A
LEFT OUTER JOIN B
ON (B.id = A.id)
WHERE B.id IS null
Hive seems to support IN, NOT IN, EXIST and NOT EXISTS from 0.13.
select count(*)
from flight a
where not exists(select b.tailnum from plane b where b.tailnum = a.tailnum);
The subqueries in EXIST and NOT EXISTS should have correlated predicates (like b.tailnum = a.tailnum in above sample)
For more, refer Hive Wiki > Subqueries in the WHERE Clause
Should you ever want to do an IN as so:
SELECT id FROM A WHERE id IN (SELECT id FROM B)
Hive has this covered with a LEFT SEMI JOIN:
SELECT a.key, a.val
FROM a LEFT SEMI JOIN b on (a.key = b.key)
if you can using spark sql you can use left anti join.
ex: SELECT A.id FROM A left anti join B on a.id=b.id
The query works, but I was asked to rewrite it in join operator style.
SELECT pr.ProdName, pr.ProdPrice
FROM Product pr, OrderTbl ord, OrdLine ol, Customer cu
WHERE pr.ProdNo=ol.ProdNo
AND ord.OrdNo=ol.OrdNo
AND cu.CustNo=ord.CustNo
AND cu.CustNo='C2388597'
AND ord.OrdDate BETWEEN '01-Jan-04' AND '31-Jan-04';
I've just started out using Oracle, so I'm not sure how. I think I should be using INNER JOINS, but I don't know exactly how. Could someone help me, please?
You should definitly read about joins though, but here is how this cross join style can be converted to inner join
SELECT pr.ProdName, pr.ProdPrice
FROM Product pr
INNER JOIN OrdLine ol ON pr.ProdNo=ol.ProdNo
INNER JOIN OrderTbl ord ON ord.OrdNo = ol.OrdNo
INNER JOIN Customer cu ON cu.CustNo=ord.CustNo
WHERE cu.CustNo='C2388597'
AND ord.OrdDate BETWEEN '01-Jan-04' AND '31-Jan-04';
SELECT pr.ProdName, pr.ProdPrice
FROM Product pr
INNER JOIN OrdLine ol ON pr.ProdNo=ol.ProdNo
INNER JOIN OrderTbl ord ON ord.OrdNo = ol.OrdNo
INNER JOIN Customer cu ON cu.CustNo=ord.CustNo
WHERE cu.CustNo='C2388597'
AND ord.OrdDate BETWEEN '01-Jan-04' AND '31-Jan-04';
Here is for you to read on Joins:.
Dim ds = From a In db.Model
Join b In db.1 On a.id Equals b.ID
Join c In db.2 On a.id Equals c.ID
Join d In db.3 On a.id Equals d.ID
Join f In db.4 On a.id Equals f.ID
Select a.id, a.Ref, a.Type, a.etc
Above is my linq query. At the moment I am only getting the first row from the db returned when there are currently 60 rows. Please can you tell me where I am going wrong and how to select all records.
Thanks in advance!
UPDATE:
When I take out all the joins like so:
Dim ds = From a In db.1, b In db.2, c In db.3, d In db.4, f In db.5
Select a.id, a.Ref, a.type, b.etc, c.etc, d.etc
I get a system.outofmemory exception!
You're only going to get a row produced when all of the joins match - in other words, when there's a row from Model with an AP, an Option, a Talk and an Invoice. My guess is that there's only one of those.
LINQ does an inner join by default. If you're looking for a left outer join (i.e. where a particular row may not have an Invoice, or a Talk etc) then you need to use a group join, usually in conjunction with DefaultIfEmpty.
I'm not particularly hot on VB syntax, but this article looks like it's what you're after.
select ma.TITLE,ma.ID as aid,ur.USER_ID
from LEO_MENU_ACTIVITY_RELATION mr
inner join LEO_MENU_MASTER mm on mm.ID=mr.MENU_ID
INNER join LEO_MENUACTIVITY ma on mr.ACTIVITY_ID=ma.ID
LEFT OUTER JOIN LEO_USER_RIGHTS ur on ma.ID=ur.MENU_RELATION_ID and ur.MENU_ID=mm.ID and ur.USER_ID='141'
where mm.ID='1'
UNION (SELECT
'List' as TITLE,
1 as ID,
case (WHEN ur.MENU_RELATION_ID=1 THEN NULL ELSE USER_ID END)as USER_ID
from
LEO_USER_RIGHTS)
In the UNION i want perform a conditional select like if ur.MENU_RELATION_ID=1 then the USER_ID should be selected as NULL otherwise the the original value from the 'LEO_USER_RIGHTS' table must be retrieved.
How can i do this ? Please help
Krishnik
If you want to combine in a UNION something based on the first table I think you can only do it by repeating the whole thing like this:
select ma.TITLE,ma.ID as aid,ur.USER_ID
from LEO_MENU_ACTIVITY_RELATION mr
inner join LEO_MENU_MASTER mm on mm.ID=mr.MENU_ID
INNER join LEO_MENUACTIVITY ma on mr.ACTIVITY_ID=ma.ID
LEFT OUTER JOIN LEO_USER_RIGHTS ur on ma.ID=ur.MENU_RELATION_ID and ur.MENU_ID=mm.ID and ur.USER_ID='141'
where mm.ID='1'
UNION (SELECT
'List' as TITLE,
1 as ID,
case (WHEN ur.MENU_RELATION_ID=1 THEN NULL ELSE USER_ID END)as USER_ID
from
LEO_MENU_ACTIVITY_RELATION mr
inner join LEO_MENU_MASTER mm on mm.ID=mr.MENU_ID
INNER join LEO_MENUACTIVITY ma on mr.ACTIVITY_ID=ma.ID
LEFT OUTER JOIN LEO_USER_RIGHTS ur on ma.ID=ur.MENU_RELATION_ID and ur.MENU_ID=mm.ID and ur.USER_ID='141'
where mm.ID='1'
)
If this is used often I would create a view to avoid duplicate code. In ORACLE (I do not know for other SQL dialects) there is a WITH statement enables you to make a sort of "temporary view".