Is it possible to do an UPDATE on a table based on a JOIN with an existing table in BigQuery?
When I try this statement on the following database (https://bigquery.cloud.google.com/dataset/pfamdb:pfam31),
UPDATE pfam31.uniprot
SET uniprot.auto_architecture = uniprot_architecture.auto_architecture
INNER JOIN
pfam31.uniprot_architecture using(uniprot_acc)
I get errors relating to the INNER JOIN, with WHERE being expected instead. How should I be doing this (if it's possible)?
UPDATE `pfam31.uniprot` a
SET a.auto_architecture = b.auto_architecture
FROM `pfam31.uniprot_architecture` b
WHERE a.uniprot_acc = b.uniprot_acc
Please refer to the UPDATE statement syntax. There is even an example on UPDATE with JOIN. You need to use a FROM clause, and your query should be something like this:
UPDATE pfam31.uniprot
SET uniprot.auto_architecture =
(SELECT uniprot_architecture.auto_architecture
FROM pfam31.uniprot_architecture
WHERE uniprot.uniprot_acc = auto_architecture.uniprot_acc);
This assumes that there is a 1:1 relationship between the uniprot_acc values in the tables. If that isn't the case, you will need to use LIMIT 1, for instance.
Related
I've read numerous posts about this, and am unable to determine how my query differs from the ones whose questions were answered. Any help would be sincerely appreciated. Here is my query:
SELECT A.EMPLOYEE, COUNT(B.DEPENDENT)
FROM TABLE A
LEFT OUTER JOIN TABLE B ON A.EMP_ID = B.EMP_ID
WHERE A.EMP_ID = '12345'
AND B.DEP_RELATION = 'CHILD'
GROUP BY A.EMP_ID
I entered my own EMP_ID to check the query. I have no children, and the query is returning no results. I want it to show my EMP_ID and (null).
Your WHERE clause is checking table B.
Try removing AND B.DEP_RELATION = 'CHILD' and see if you get the results you want
I figured it out. I had to move my B.DEP_RELATION = 'CHILD' line above the WHERE clause. Thank you.
I have a sqlite database that I'm trying to build a query. The table column I need to retrieve is iEDLID from the table below :
Right now all I have to go on is a known iEventID from the table below :
And the the nClientLocationID from the table below.
So the requirements are I need to get current iEDLID to write, lookup from tblEventDateLocations for dEventDate and the tblLocation.nClientLocationID based on the tblLocations.iLocationID I already have and event selected on this screen.
So I would need a query that does a "SELECT DISTINCT table EventDateLocations.iEDLID FROM tblEventDateLocations ...."
So basically from another query I have the iEventID I need, and I have the event ID i need but where the dEventDate=(select date('now')) I need to retrieve the iEventDateID from table EventDates.iEventDateID to use on the table EventDateLocations
this is the point where I'm trying to wrap my head around the joins for this query and the syntax...
It seems like you want this:
select distinct edl.iEDLDID
from
tblEventDateLocations edl
join tblEventDates ed on edl.EventDateId = ed.EventDateId
where
ed.EventId = ?
and ed.dEventDate = date('now')
and edl.nClientLocationID = ?
where the ? of course represent the known event ID and location ID parameters.
Since nClientLocationId appears on table tblEventDateLocations you do not need to join table tblLocations unless you want to filter out results whose location ID does not appear in that table.
I have an issue: When I am trying to join two tables which do not have a foreign key or a direct entity relation through my java code within themselves. I am using the below JPQL query: -
SELECT p FROM P p, OM orgm WHERE p.o.id = orgm.o.id and p.u.id = orgm.u.id and orgm.ma = true and p.u.id = ? AND p.o.id IN (:oId);
But this turns to a MySQL query which has a "cross join" which obviously is expensive.
What I need is to make sure that a similar query gives me an inner join MySQL query between the two tables.
I am trying to make usage of the "WITH" clause but seems that it doesn't work with inner join.
Please revert what can be done in this scenario.
Thanks in advance.
Here is the query (MS SQL):
use DB_432799_satv
select [DB_432799_satv].[dbo].ac_Orders.OrderNumber, OrderDate, PaymentDate,
CompletedDate, ShipDate,DateTimeFinishedPicking,DateTimeShipped,
ShipMethodName, PaymentMethodName
from [DB_432799_satv].[dbo].ac_Orders
Inner join [DB_432799_satv].[dbo].ac_Payments on
[DB_432799_satv].[dbo].ac_Orders.OrderId =
[DB_432799_satv].[dbo].ac_Payments.OrderId
Inner join [DB_432799_satv].[dbo].ac_OrderShipments on
[DB_432799_satv].[dbo].ac_Orders.OrderId =
[DB_432799_satv].[dbo].ac_OrderShipments.OrderId
Inner join [DB_432799_satv].[dbo].[ac_Transactions] on
[DB_432799_satv].[dbo].ac_Payments.paymentid =
[DB_432799_satv].[dbo].ac_Transactions.paymentid
Inner join [SuperATV].[dbo].[tblPartsBoxHeader] on
[DB_432799_satv].[dbo].[ac_transactions].[ProviderTransactionId] =
[SuperATV].[dbo].[tblPartsBoxHeader].[ordernumber]
How would I change this into a stored procedure?
I suspect what you want is what a "view" will give you. Specifically, to store that query in the database and select from it like:
SELECT * FOM myLongQueryView WHERE OrderNumber = 1234;
I don't develop MSSQL, but a quick search turned up this doc page on msdn. I suppose it would go something like this:
CREATE VIEW [DB_432799_satv].myLongQueryView
AS
select [DB_432799_satv].[dbo].ac_Orders.OrderNumber, OrderDate, PaymentDate,
CompletedDate, ShipDate,DateTimeFinishedPicking,DateTimeShipped,
ShipMethodName, PaymentMethodName
from [DB_432799_satv].[dbo].ac_Orders
...
Simply prepend your query with CREATE VIEW [DB_432799_satv].myLongQueryView AS, and use the docs page to decide if any options are desired.
It's important to note that query is stored, not it's current results. So it stays up to date with your data. It is joinable, aggregatable, etc...
I am using DB2 for performing the below update operation.
update DATA set B_DESC=P_DESC, P_DESC=null
where B_DESC= *, P_DESC=*
(Select B_DESC,P_DESC from C_DATA)
The below is actually possible but since complex joins are involved in that sub query it is not advisable to use like below
update DATA set B_DESC=P_DESC, P_DESC=null
where B_DESC= (Select B_DESC from C_DATA), P_DESC=(Select P_DESC from C_DATA)
I have to update DATA table, but the B_DESC and P_DESC i have to fetch it from C_DATA table and use it in the UPDATE query.
Please let me know how to do it. It has to be a single query if possible.
Thanks in advance.
Use a merge query to update the table, instead of join. DB2 does not accept join in update query for that purpose, you have to use a merge:
MERGE INTO TABLE_NAME1 A
USING (SELECT COL1, COL2 FROM TABLE_NAME2) B
ON A.COL1 = B.COL2
WHEN MATCHED AND A.COL1 = B.COL2
THEN UPDATE SET A.COL1 = B.COL2;
Does your 1st query not work? I'm not familiar with comma-separating parts of the WHERE clause (it's not valid on my version of DB2 - is it actually part of the syntax?).
Normally, when I need to run these types of update queries, I use an EXISTS clause, like this:
UPDATE data as a SET b_desc = p_desc, p_desc = null
WHERE EXISTS (SELECT '1'
FROM c_data as b
WHERE b.b_desc = a.b_desc
AND b.p_desc = a.p_desc)