What is this operator..i'ven't seen it before
You define a multiple-row subquery in the WHERE clause of an SQL query with a comparison operator&qu
ot;=" What happens when the main query is executed?
A. the main query executes with the first value returned by the subquery
B. the main query executes with the last value returned by the subquery
C. the main query executes with all the values returned by the subquery
D. the main query fails because the multiple-row subquery cannot be used with the comparison op
erator.
E. You cannot define multiple-row subquery in the WHERE clause of a SQL query
Explanation: The main query fails because the multiple-row sub-query cannot be used with the comparison operator. Only single-row query can use comparison operators, like =, <, >, <=, >, and & lt;>. Incorrect Answers A: The main query fails because the multiple-row sub-query cannot be used with the comparison operator. B: The main query fails because the multiple-row sub-query cannot be used with the comparison operator. C: The main query fails because the multiple-row sub-query cannot be used with the comparison operator. E: You can define a multiple-row sub-query in the WHERE clause of a SQL query, but error will be generated by different reason. OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 150-165 Chapter 4: Subqueries
And ?
Is your question about E answer ?
Indeed, we can write a subquery which return more than one row, for IN operator for example...
But, as response D said, with = operator this doens't work :
SQL> select deptno from dept;
DEPTNO
10
20
30
40
SQL> select count(*)
2 from emp
3 where deptno in (select deptno from dept);
COUNT(*)
14
SQL> select count(*)
2 from emp
3 where deptno = (select deptno from dept);
where deptno = (select deptno from dept)
ERROR at line 3:
ORA-01427: single-row subquery returns more than one row
SQL> Is this your doubt ?
Nicolas.
Similar Messages
-
I've seen this operator in a Java book I'm reading, but it's not explained. Could anyone fil me in?
width >> 1Shifts the bits right--effectively dividing by 2 (+/- remainder). I forget if it's a zero-fill or sign-fill. Zero-fill would make the result always positive, sign-fill would preserve the sign. Try it with, say, -8, and see if you end up with -4 or +4. I think there's also a >>> which does whichever fill rule this one doesn't.
-
The ipod has been working erratically for the last few weeks. Stops playing mid-song, takes forever to load the next song on shuffle mode. Today, stopped playing altogether. When I tried to reset, I got an orange circle with a X in it and the support web addaress. I can't find anything on the support site that references the x'd circle. Any ideas? Is this thing toast?
Hi Crystal Newkirk,
I've come across the following information which may be helpful. If you are seeing the red "X" icon on the display, we will need to restore your iPod from Disk Mode.
iPod Displays a Red "X" Icon
http://support.apple.com/kb/TS1463
Restore iPod from Disk Mode
Disconnect iPod from your computer.
Manually put iPod into Disk Mode.
Open the latest version of iTunes and connect iPod.
Restore iPod.
Thanks,
Matt M. -
has anyone come accross restore error 53 on an iPhone 6???
Hi, poppyseed83.
Thank you for visiting Apple Support Communities.
I would recommend going through the steps in the article below.
Resolve iOS update and restore errors in iTunes
http://support.apple.com/kb/TS1275
Cheers,
Jason H. -
TS1814 do not have enough access privilages for this operation, iphone 5
I am trying to sync my iphone 5 to iTune but getting this message.
The iPhone "iPhone 5" cannot be synced. You do not have enough access privilages for this operation.
Does anyone seen this error before?Are you logged in as an Administrator on your account? You need to have administrative privileges on the iTunes and related folders for syncing. Try this diagnostic in iTunes http://support.apple.com/kb/HT1369 and see if it identifies the errors. If you are an administrator on the computer, you will need to make sure the necessary folders have the permissions repaired.
-
I get this message when I try to download purchased music, never seen it before, never had a problem before.
"you do not have enough access privelages for this operation"
This computer is authorized, auoto download is enabled and I can download on my ipad without a problem.
Any ideas what might be going on?Hi jimbowby,
If you are getting this error message just when attempting to download previously purchased music (new purchases work fine), and it's only occuring on the computer (redownloads on the iPad work fine), it may be a permissions issue. It may be worth taking a look at the Resolution section of the following article, which covers other issues that can throw that same error message: Trouble adding music to iTunes library or importing audio CD Hope that helps.
Cheers,
- Brenden -
The operation can’t be completed because the item “12b” is in use. What does this message mean. It appeared as I was attempting to clear my time machine backup?
Reboot your machine make sure Aperture doesn't start (as Lion is liable to do) and try it.
-
When ever i try to sync my ipod touch, my itunes wont let me on my mac becasue it says i do not have enough access privileges for this operation. What should i do?
Try here:
iPhone - not enough access privileges: Apple Support Communities -
Just recently getting error message when downloading podcasts. Says "The iTunes Library file cannot be save. You do not have enough access privileges for this operation." Doesn't happen every time. Using Windows 7. What can I do? The files seem to be there but I don't know if they are being backed up to cloud.
Hi, DickmoAZ.
Thank you for visiting Apple Support Communities.
This sounds like a permission issue most likely with the iTunes Media folder. Here is an article that will help you troubleshoot this issue.
iTunes: Missing folder or incorrect permissions may prevent authorization
http://support.apple.com/kb/ts1277
Cheers,
Jason H. -
Question: I tried to backup my computer contents, cut coun't because "finder can't compelte the operation because some data in ........JPG (an iphoto image)
can't be read or written (error code -36) What is this error and how can I correct it?
Thanks,
betteypI am backing up on two different drives...one is on the time machine...the one I am having trouble with is a passport that I back up manually. I have not gotten a notice from the backup on the time machine that there is an error.
Before this error occured....the "event" that the photo was in emptied without me doing anything. This has happened before, when the total number of pictures that I have downloaded for the day, the events emptied overnight without me doing anything (????????)
Can you explain more what is happening.....
Thanks -
Im having trouble setting up my mail. I have just upgraded from a iphone 4 to 5. mail keeps asking for my password when i put it in it comes up saying
the operation could not be completed (MFMessageErrorDomain error 1032)
what is this??Nice try! Take a hike.
-
What does it mean when you receive a box that says " The Itunes library cannot be saved. You do not have enough access privileges for this operation"?
See if these help
the iphone cannot be synced. you do not have enough access privileges for this operation
Re: access privileges ????
Re: Access Privileges
The iPhone "phonename" cannot be synced. You do not have enough access privileges for this operation -
"The iTunes library file cannot be saved. You do not have enough access privileges for this operation." Help! This keeps coming up. I've not changed anything. What do I need to do to fix this?
Sounds like a Windows user privelidge problem. Are you using an administrator account on the PC?
-
Trying to install Square to accept credit cards on my ipad. I get the following message. KQHTTP Operation Error Domain error 422. What is this?
I am having same problem. Did you find a solution?
-
The server responded with “502” to operation CalDAVAccountRefreshQueueableOperation: what does this mean?
Me too. I ignore it and click "stay offline" because I am not hooked up to iCloud as yet and have no need for my Calendar to go online.
Maybe you are looking for
-
Why does ical not sync to MobileMe?
Since Lion, iCal is syncing only the first 4-5 events after adding the MobileMe Account. After that, the syncing whell is running endless. Specs are: MobileMe: 6 x Calendars, 5 are published and shared with other Mac Users Shared with other Users: 3
-
Error message when trying to install Flip4Mac
I get this every time I try to install Flip4Mac on Macbook Intel but I got the newest one that has Universal binary: What could be causing this and how could I fix it?
-
MM - Purchase Order Form Setup
Hi Experts, I am from FICO area but unfortunately my client wants me to support on MM module (only in small areas) and I need support on below: Currently we are printing Purchase Order form for vendors but now there was change in purchase order form
-
Authorization failed when trying to connect Hyperion to BW 7.0
Hello gurus, Using Hyperion interactive Reporting Studio, I try to access BW cubes. I select OLE DB as connection type and SAP BW OLE DB provider, I am prompted for a BW system to connect to. I then get the following error message: OLE Error: 80040e4
-
HT3384 How do I change margins and header footers on a pages document?
Hi can anyone help me on how do I change margins and header / footers on a pages document? Many thanks