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• jpa relationship-Google app engine

  - by megala

  I created two tables in google appengine datastore using JPA. Table1: *groupname pk *groupid *groupdesc *emailper Table2: *groupname *memberid *membername My constraint is if i enter data into table2 it check whether group already exists or not in table.If exists than only it store the data into table .How to solve this?

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• updating uitableview after performing paste from the cell

  - by Nava Carmon

  Hi, I've implemented edit menu from my custom UITableViewCell class. I have a small problem of updating a table view from inside the custom table cell class. What is the best approach to do that? TIA

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• Replace a control on the screen

  - by Rob Bonner

  Hello all, I have an instance of a FlowCoverView (a great library that emulates cover flow on the iPhone). And it works great, with the exception of an update. When I update my table behind the scenes, I have no way of telling this control (that is defined in IB) that it has been updated, and to reload. (much like you can with a table using reloadData) To the question, is there a way to replace a control that is on the screen with another control to force the reload?

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• Is it possible to resize a UITableViewCell without using UITableViewDelegate?

  - by Sam Soffes

  I want to resize my table view cells from inside the cell instead of from the UITableViewDelegate. I am resizing them based on asynchronous content, so I can't size them in the delegate. I tried setting self.frame inside the cell, but the table view was really unhappy about that. Cells were overlapping and all kinds of craziness was going on.

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• mysql insert with auto-increment column

  - by czuroski

  Hello, I am trying to insert data into a mysql table from a csv file. I am using the infile sql command, but I am having trouble because the first column of the table is an id that is set as an auto increment field. what do I have to set my first column value to in order to get this to work, or can I do it at all? Thanks

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• Nhibernate schema clasue

  - by Phil Whittaker

  How do I use the schema clause on a bag object in Nhibernate mapping? I have an table that I need to sepcify the schema for and the nhibernate documentation talks about table schema but I can't find any further details...

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• Managing trace files on Sql Server 2005

  - by Sophtware

  I need to manage the trace files for a database on Sql Server 2005 Express Edition. The C2 audit logging is turned on for the database, and the files that it's creating are eating up a lot of space. Can this be done from within Sql Server, or do I need to write a service to monitor these files and take the appropriate actions? I found the [master].[sys].[trace] table with the trace file properties. Does anyone know the meaning of the fields in this table?

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• Entity Framework 4 omits some associations during model generation

  - by kzen

  After creating an EF4 model from a SQL Server database I noticed that all the relationships of my Users table were not imported into the model as associations. All the other relationships were imported fine. My Users table has a PK userId which is a char(7) field and it is integrated into several other tables in the database as an FK but for some reason EF4 does not import these relationships as associations during the model generation process... Does anyone have any ideas why this would be happening?

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• Can I lock tables in an IF statement in MySQL?

  - by MalcomTucker

  This is throwing a syntax error - --from body of a stored proc IF (name = in_name) SET out_id = temp; ELSE LOCK TABLE People WRITE; INSERT INTO People (Name) VALUES (in_name); UNLOCK TABLE; SELECT LAST_INSERT_ID() INTO out_id END IF do I have to lock any tables I need at the start of the SP?

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• mysql command for update

  - by Mac Taylor

  hey guys i need to add a special text to all rows in my mysql table , how to add some text to the end of all rows' content in a table just for one field i used this code : UPDATE `blogs` SET `title`= `title`+ 'mytext'; but didnt work for me

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• Ideas for an office games/recreation room. [closed]

  - by the-locster

  Recreation is an important part of office life. What do you have or what would you like to have in an in-office recreation room? Some obvious ones to get the ball rolling: video games table football air hockey building bricks pool table

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• Problem with Oracle 10g for writing trigger that will create CSV file with the contents of the data

  - by kishore

  How can a trigger be written which is invoked after updating a particular column in the table and creates a CSV file with the contents of same table? I am using Oracle 10g.

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• Excel: VLOOKUP that returns true or false?

  - by Svish

  In Excel we have the VLOOKUP function that looks for a value in a column in a table and then returns a value from a given column in that table if it finds something. If it doesn't, it produces an error. Is there a function that just returns true or false depending on if the value was found in a column or not?

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• How optimize queries with fully qualified names in t-sql?

  - by tomaszs

  Whe I call: select * from Database.dbo.Table where NAME = 'cat' It takes: 200 ms And when I change database to Database in Management Studio and call it without fully qualified name it's much faster: select * from Table where NAME = 'cat' It takes: 17 ms Is there any way to make fully qualified queries faster without changing database?

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• How do I add a record only if it doesn't already exist in SQL Server?

  - by menacheb

  Hi, I have a project in C# with a Sql-server Database. In that database I have a table named 'Process' and columns named 'process_name', 'Full_Name' and 'Version' (all of the type:nvarchar(50)). I want to write a query wich will add the new process, only if it doesn't exist in the table yet. How can I do that? Many thanks,

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• What do you call the concept of dynamic data definition?

  - by DJTripleThreat

  Maybe this is simpler and more straightforward then what I'm thinking but I can't seem to find this concept on google anywhere. The concept is this: You have a table in a database and the table has a specified number of columns. However, it has been asked of me by previous clients that there also be a set of dynamic user defined columns that can be added on the fly. What is this concept called and is it considered a design pattern?

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• How can I do a multi level parent-child sort using Linq?

  - by Tenacious T

  How can I do a multi-level parent-child sort using Linq if I have a table structure like the one below: [Table: Sections] Id Seq Name ParentSectionId 1 1 TOP NULL 2 1 AAAA 1 3 2 SSSS 1 4 3 DDDD 1 5 1 SectionA1 2 6 2 SectionA2 2 7 1 SectionS1 3 8 3 ASummary 2 Expected sort result: TOP AAAA SectionA1 SectionA2 ASummary SSSS SectionS1 DDDD

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• NHibernate Mapping + Iset

  - by jack

  Hi all I have a mapping file <set name="Friends" table="Friends"> <key column="UserId"/> <many-to-many class="User" column="FriendId"/> </set> I would like to specify extra columns for the friend table this creates. For example Approve (the user must approve the friend request) Is there a easy way?

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• MS Excel connection with vb.net

  - by Noreen

  I have used the connection string below but I am getting an error when trying to create a table Dim ConnString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & strFName + _ ";Extended Properties=""Excel 12.0 Xml;HDR=YES;IMEX=1""" Cannot modify the design of table 'tablename'. It is in a read-only database.

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• Selecting the 2nd row in sql

  - by Alex Chen

  I want to select the second row only from the table. From the ClientUserName column. SELECT ClientUserName, DestHost, count(DestHost) counts FROM #ProxyLog_record WHERE ClientUserName = (Select top 1 ClientUserName from #ProxyLog_count_2) GROUP BY ClientUserName, DestHost ORDER BY counts DESC The (Select top 1 ClientUserName from #ProxyLog_count_2) shows top 1 only but I need to get the 2nd data from that table. How can I do this?

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• Extending DataGrid/Changing DataGrids header

  - by drasto

  Is there any way how to override DataGrids header line ? Or at least its behaviour ? I'm trying to implement Outlook-like grouping of the table. That is allow user to drag column header out of the table to the dedicated area to sort by that column (for example XamDataGrid has that feature, you can see how it works here). I cannot use any commercial solutions. I will be thankfull for any experiences, ideas, code, notes or tutorials.

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• Unstructured database design

  - by Linh

  Hi all, According to normal way, we design the table with fields. Example with an article the table can contain fields as follows: title, content, author..... But how does everybody think if we add up some fields to a field?

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• Oralce : select maximum value from different comulms of the same row

  - by gregseth

  The whole question is pretty much in the title. For each row of the table I'd like to select the maximum of a subset of columns. For example, from this table name m1 m2 m3 m4 A 1 2 3 4 B 6 3 4 5 C 1 5 2 1 the result would be name max A 4 B 6 C 5 The query must be compatible oracle 8i. Thanks.

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• Oracle global temporary tables - maximum number of records?

  - by superdario

  Hello, Is there a limit on how many records can go to a global temporary table, before it affects performance, and does it affect performance? I am talking here about millions of records that might be inserted to a global temporary table.

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• How can I change column length using HQL query?

  - by gmugmu

  I tried session.createSQLQuery("ALTER TABLE People MODIFY address VARCHAR(1000);").executeUpdate(); but this throws org.hibernate.exception.SQLGrammarException: could not execute native bulk manipulation query After a lot of googling, the recommendation is to use HQL instead of SQL query to do bulk updates. Not sure how to use HQL to accomplish this. There seems to be no decent HQL documentation for updating column length in a table. Thanks so much for the help.

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