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• Defining relationship in value objects using Hibernate

  - by kate

  Hi, We have three tables .We need to get data from these tables based upon particular conditions. Like if TableA.columv=TableB.columc=tableC.column then get data. We are using value objects to map Objects to relations. Question is how to maintain these relation ships in value objects. And how to retrieve data from it. We have one value object per table.

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• Query scope within a table trigger in an Oracle database

  - by sisslack

  I'm been trying to write a table trigger the queries another table that is outside the schema where the trigger will reside. Is this possible? It seems like I have no problem querying tables in my schema but I get: Error: ORA-00942: table or view does not exist when trying trying to query tables outside my schema. The documentation seems to elude to this notion, but it's not 100% clear to me.

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• Three-way full outer join in SQLite

  - by Vince

  I have three tables with a common key field, and I need to join them on this key. Given SQLite doesn't have full outer or right joins, I've used the full outer join without right join technique on Wikipedia with much success. But I'm curious, how would one use this technique to join three tables by a common key? What are the efficiency impacts of this (the current query takes about ten minutes)? Thanks!

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• Convert dependencies to point to View instead of Table

  - by jwarzech

  I currently have a SQL Server 2008 database in which I am planning to separate out some tables to other databases. I want to be able to replace all references to the separated tables from the original database using views. Is there a better way (other than manually changing all FK and SProc references) to switch all the dependencies to reference the view instead of the table?

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• Import MySQL database into a MS SQL Server

  - by marionmaiden

  I have a .sql file from a MySQL dump containing tables definitions and the data to be inserted in this tables. How can I convert this database represented in the dump file into a MS SQL server database?

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• IOC are at the class level, but what about database conflicts?

  - by mrblah

  With IOC I understand you can substitue implementations out by merely editing a configuration file etc. BUT, what happens when the classes are married to particular database tables and sprocs, you can't just swap out an implementation since the classes/entities are tied to particular tables and stored procedures. Am I right here?

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• How to temporarily change all default user settings without destroying the original?

  - by mystify

  My app is based strongly on a lot of NSUserDefault keys and values. I want to implement a temporary defaults profile which the user can activate to get a special task done easily. For this, some of the user defaults must be changed temporarily so the app adjusts it's interface appropriately. I started to just manually change those NSUserDefaults settings, but this also destroys the user's original settings. Is it possible to keep a backup of the user's NSUserDefault settings and restore them after the user quits the temporary mode or the app? Like I see it, NSUserDefaults actually is just an NSMutableDictionary which is generated out of a plist file. So I would just make a deep copy of that and later assign that copy somehow back to NSUserDefaults?

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• Installing Java SDK on Linux.

  - by Negai

  Hi everyone, I'm currently trying to install Java SDK on my Debian 'Etch'. Even though the installation process has been described a number of times, but still I haven't found the information to solve the problem. Here is, what I'm getting: m@sanctuary:~/distr/java$ fakeroot make-jpkg jdk-6u20-linux-i586.bin Creating temporary directory: /tmp/make-jpkg.sqQPnaxiwl Loading plugins: blackdown-j2re.sh blackdown-j2sdk.sh common.sh ibm-j2re.sh ibm-j2sdk.sh j2re.sh j2sdk-doc.sh j2sdk.sh j2se.sh sun-j2re.sh sun-j2sdk-doc.sh sun-j2sdk.sh Detected Debian build architecture: i386 Detected Debian GNU type: i486-linux-gnu No matching plugin was found. Removing temporary directory: done Could anybody help me? Thanks in advance.

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• How to delete child table records during the update of parent table using Hibernate

  - by Harsha

  I have a Parent Table A and child tables B,C with many to one relations. Lets say I have data like, for primary key 1 in parent table A I have 3 rows in child table B and 4 rows in child table C. Now if I want to delete the rows of the child table during an update of the parent table(that means Now, I want to update the table only with one row in each child tables and delete the other rows in them) then how to handle this scenario in hibernate?

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• Lookups in Multi-Tenant Database

  - by Huthaifa Afanah

  I am developing a SaaS application and I am looking for the best way to design lookup tables, taking in consideration: The look-up tables will have predefined data shared among all the tenants Each tenant must have the ability to extend the look-up table with his own data e.g adding a car class not defined I am thinking about adding TenantID column to each lookup and add the predefined data with setting that column to some value which represents the "Super Tenant" that belongs to the system itself

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• Execute query stored in variable in a very specific way

  - by niao

  Greetings, I have a problem as follows: I have an SQL variable declared: DECLARE @myVariable nvarchar(max) a third party library set a value for this variable. To simplify, lets say that the value is as follows: SET @myVariable = 'Select ROWGUID from MySampleTable' Now, I want to execute the following query: SELECT ROWGUID FROM myTable WHERE ROWGUID in (exec sp_executesql @myVariable ) However, the above statement does not work because it returns an error telling me that I can't execute stored procedure in that way. I made a workaround and this is what I wrote: create table #temptable (ID uniqueidentifier null) if(@myVariable is not null AND @myVariable !='') insert into #temptable exec sp_executesql @myVariable SELECT ROWGUID FROM myTable WHERE ROWGUID in (select * from #temptable) DROP TABLE #temptable This works fine.However I don't think it is a good idea to use temporary table. How can I achieve the same result without necessity of creating temporary tables? I am using SQL SERVER 2005

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• How to automatically reseed after using identity_insert?

  - by Earlz

  Hello, I recently migrated from a PostgreSQL database to a SQL Server database. To switch the data over I had to enable IDENTITY_INSERT. Well come to find out that I get all sorts of strange errors due to duplicate identity values(which are set as primary keys) upon doing an insert in any of the tables. I have quite a few tables. What would be the easiest way of automatically reseeding the identity of every table so that it is after max(RID)?

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• Hibernate reverse engineering

  - by EugeneP

  I have a structure where the main table is USER, other tables include CATEGORY (contains user_id). What I got after the standard reverse engineering procedure was: the class User contained a collection of categories, the class Category didn't contain the foreign key (user_id) but it did contain the User object. Why did it not contain the foreign key as a class property? And how do I join these two tables in HQL without that glue? HQL - please explain this part.

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• How to parse the table from webpage where there are many webpage.

  - by Harikrishna

  There are many tables in the one webpage from that I want to extract the data from only one table. I am using Html Agility Pack to parse the html table.There are many tables in one webpage but I want to extract the data from only one table. So I will first find that table for which I want to extract the data which I can do.Now problem is once I find that table,what I should do to extract the data from only that table ?

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• Is there such a thing as Cakephp "user management" plugin script

  - by Toomas Neli

  is there anywhere such script that includes a cakephp user management part, view - registration form ( for example allowing to enter: first name, surname, email, user address, user phone number, last login date etc. ) sends confirmation to email - about registration inserts users data into mysql tables (users id, etc.) and blocks duplicate entries to users tables or does other similar tasks etc. if there is no such plugin then may be someone can send the custom made scripts

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• How do I select from a stored procedure in Sybase?

  - by Nick Fortescue

  My DBA has constructed me a stored procedure in a Sybase database, for which I don't have the definition. If I run it, it returns a resultset with a set of columns and values. I would like to SELECT further to reduce the rows in the result set. Is this possible? From this question it seems like I could insert the results into a temporary table, but I'm not sure I've got permissions to do this. Is there any way I can SELECT certain rows, or if not, can someone give me example code for simulating with a temporary table?

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• Order column in a datatable

  - by superartsy

  I have two tables - Parent table (Clients- ClntID,ClntName) And Child Table ( Orders- ClntID,OrderNumber,OrderDate) - Order Number column has a value equal to how many orders the Client has. It is not an autonumber ClntID ClntName 1 Company A 2 Company B ClntID OrderNumber OrderDate 1 1 11/1/2009 1 2 11/15/2009 2 1 2/12/2008 2 1 7/13/2009 If I have a dataset for these tables, how do I insert the data in the Orders table and increment the OrderNumber value correctly.

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• why a .net 1.1 code gets compiled in 2.0 and throws an error?

  - by Sanjeev

  Hi I have a web projects which is build in VS2003/1.1 framework and deployed in a webserver with IIS setting specified to 1.1 framework.lets say project X I also have another web project which is build with VS2008/2.0. IIS setting - ASP version 2.0 is selected and all pages are assigned to run with 2.0* dlls. Lets say project Y Now the problem seem to be when I hit project x, sometimes it throws errors like "error BC30456: 'Initialize Culture' is not a member of 'ASP.**" During troubleshooting this issue, I browsed through 2.0 Temporary ASP.Net files "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\" and found temp files generated for project X. (HUH?) How/why 1.1 project gets compiled in 2.0 only when it errors out.( or we could put it this way that it errors out every time it gets compiled in 2.0 which it is not supposed to) I'm confused as to why this is happening when project X has nothing to do with .net 2.0.

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• How to manage and make look of complex data <table> identical in all browser?

  - by metal-gear-solid

  What are helpful CSS properties which can be helpful for table? I have to make so many complex tables which have different type of colors in columns, thead, borders, padding, alternate row and column colors etc. I want to use as less as possible of css classes. How to make complex tables design with combination of as much as possible of HTML tags and CSS properties? and should look identical in all browsers.

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• how can i execute large mysql queries fast

  - by testkhan

  I have 4 mysql tables and have a single query with JOIN on multiple tables and I am requesting it via jquery ajax, but it takes to much long time from about 1-3 minutes while I want to execute them on average 2-5 seconds. is there any special way to execute the quries fast

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• Where is all_nested_table_cols in 9i?

  - by thecoop

  Oracle 9i has nested tables, however it doesn't have the all_nested_table_cols sysview (like 10g and 11g) which lets me see what the columns are for these nested tables. How can I find this information on a 9i database?

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• Hibernate query cache automatically refreshed on external update?

  - by artgon

  I'm creating a service that has read-only access to the database. I have a query cache and a second level cache enabled (READ_ONLY mode) in Hibernate to speed up the service, as the tables being accessed change rarely. My question is, if someone goes into the DB and changes the tables manually (i.e. outside of Hibernate), does the cache recognize automatically that it needs to be cleared? Is there a time limit on the cache?

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• Can I restore a single table from a full mysql mysqldump file?

  - by Mobius

  I have a mysqldump backup of my mysql database consisting of all of our tables which is about 440 megs. I want to restore the contents of just one of the tables form the mysqldump. Is this possible? Theoretically, I could just cut out the section that rebuilds the table I want but I don't even know how to effectively edit a text document that size.

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• Generating incremental numeric column values during INSERT SELECT statement

  - by Charles

  I need to copy some data from one table to another in Oracle, while generating incremental values for a numeric column in the new table. This is a once-only exercise with a trivial number of rows (100). I have an adequate solution to this problem but I'm curious to know if there is a more elegant way. I'm doing it with a temporary sequence, like so: CREATE SEQUENCE temp_seq START WITH 1; INSERT INTO new_table (new_col, copied_col1, copied_col2) SELECT temp_seq.NEXTVAL, o.* FROM (SELECT old_col1, old_col2 FROM old_table) o; DROP SEQUENCE temp_seq; Is there way to do with without creating the sequence or any other temporary object? Specifically, can this be done with a self-contained INSERT SELECT statement? There are similar questions, but I believe the specifics of my question are original to SO.

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• Query to check the consistency of records

  - by orunner

  I have four tables TableA: id1 id2 id3 value TableB: id1 desc TableC: id2 desc TableD: id3 desc What I need to do is to check if all combinations of id1 id2 id3 from table B C and D exist in the TableA. In other words, table A should contain all possible combinations of id1 id2 and id3 which are stored in the other three tables.

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