For the Primary Key Field with the combination of other fields
Hai
I Have a problem in creating trigger for the following
the problem goes like this..
i have a table with the fields
fld1 (varchar2(6) fld2(varchar2(20)) fld3 (number)
the fld1 is a primary key.
here in this table i am inserting the values ..
At the time of inserting the fld1 should get the part value of fld2
say if new value for fld2 is "SAM & CO" then
it should take the first letter and then followed by the sequence..
i.e., the fld1 is the combination of a
letter + firt letter of the fld2 + sequence
fld1 fld2 fld3
CS001 SSSSS 324234
CP001 PPPPP 5345435
CS002 SSSS 53543543
Here the Sequence should vary depending on the alphabet of the fld1
if P the the Sequence should be the next number of fld1 to P
i.e.,
if i add the value like this
insert into tname(fld2,fld3) values('PQQQQ',34343)
then it should be inserted as
CP002 PQQQQ 34343
I need the solution for this..
Thanx
Gaya3
thanx
gaya3
There are not enough details to be sure since you have not provided the mappings. From just the error, it looks like you are using the tableC.tableA_ID field as the foreign key in the ManyToOne relationship to A, but have marked it as insertable=false, writeable=false, meaning that it cannot be updated or used for inserts.
Either make it writable (set the settings to true), or add another basic mapping/attribute in the entity for TableC that maps to the field which you can use to set when you insert a new tableC entity. A simple example is available at
http://wiki.eclipse.org/EclipseLink/Examples/JPA/2.0/DerivedIdentifiers
Best Regards,
Chris
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Edited by: 849614 on Apr 4, 2011 5:41 AM
Edited by: 849614 on Apr 4, 2011 5:54 AMHello
If I undestand you, I think you should do this:
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every 2 days i lose connection ,since they did software upgrade in oct. now it just dismisses me when i insert the network key for password. i am using the caps
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
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,all_constraints b
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6 age varchar2(3) not null,
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10 );
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3 custnumber number(6) not null constraint fk_phone_custnumber_customer references customer,
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Exception: non-read-only mapping defined for the primary key field
Hello.
I'm new to Oracle and I created Java EE Web Project.
And I created entities from tableA, tableB, tableC from my database.
tableA has foreign key to tableB and has unidirectional Many-to-One relationship. tableC has two primary keys and one of these is foreign key to primary key in tableA. tableC also has unidirection Many-to-One relationship to tableA.
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Local Exception Stack:
Exception [EclipseLink-46] (Eclipse Persistence Services - 2.1.3.v20110304-r9073): org.eclipse.persistence.exceptions.DescriptorException
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Descriptor: RelationalDescriptor(mypack.tableC --> [DatabaseTable(tableC)])
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How can I solve this error?
Please help me.
Edited by: 900471 on 2011. 12. 3 오전 5:32
Edited by: 900471 on 2011. 12. 3 오전 5:33
Edited by: 900471 on 2011. 12. 3 오전 5:33
Edited by: 900471 on 2011. 12. 3 오전 5:34There are not enough details to be sure since you have not provided the mappings. From just the error, it looks like you are using the tableC.tableA_ID field as the foreign key in the ManyToOne relationship to A, but have marked it as insertable=false, writeable=false, meaning that it cannot be updated or used for inserts.
Either make it writable (set the settings to true), or add another basic mapping/attribute in the entity for TableC that maps to the field which you can use to set when you insert a new tableC entity. A simple example is available at
http://wiki.eclipse.org/EclipseLink/Examples/JPA/2.0/DerivedIdentifiers
Best Regards,
Chris -
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The problem I'm running into is when I try to add multiple records to View Object A without committing the transaction between each add. Because View Object B is disconnected from View Object A, the MAX_NUMBER of View Object B comes back with the same number for each add I do on View Object A. So I know I must retrieve the MAX_NUMBER from View Object A.
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hello everybody
I am doing a consultation to a table in my data base, good this table has alone two fields, the first one is the code or pk and the second one is the description, to be presisos they are names of city and code.
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