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• Hibernate's version values in Grails app

  - by xain

  I'm looking at a database dump file, and I see many records in various tables with their version number set in values other than 0 (even 94 in one case). I understand it has to do with hibernate locking strategy, but my concern is that today is Sunday, and the site has almost no visitors so is: is this normal ? Or is there a known hibernate bug or even some programming malpractice producing this ?

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• Why this query is so slow?

  - by Silver Light

  This query appears in mysql slow query log: it takes 11 seconds. INSERT INTO record_visits ( record_id, visit_day ) VALUES ( '567', NOW() ); The table has 501043 records and it's structure looks like this: CREATE TABLE IF NOT EXISTS `record_visits` ( `id` int(11) NOT NULL AUTO_INCREMENT, `record_id` int(11) DEFAULT NULL, `visit_day` date DEFAULT NULL, `visit_cnt` bigint(20) DEFAULT '1', PRIMARY KEY (`id`), UNIQUE KEY `record_id_visit_day` (`record_id`,`visit_day`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 ; What could be wrong? Why this INSERT takes so long?

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• Displaying Longitude and Latitude values stored in a SQLite db as a Route on a MapView in Android (N

  - by LordSnoutimus

  I am currently in the process of creating an application that records current location of a mobile device in intervals, displaying the route as a coloured line on the device in real-time. At the same time the application is storing the longitude and latitude in a SQLite database as I want the user to be able to bring up that specific route again. The route has a primary key and each waypoint is linked to that route by a foreign key. What would be the easiest way to display the saved route on the map?.

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• How I can Optimize this mySQL transaction within java code?

  - by worldpython

  Dear All, I am new to MySql database. I've large table(ID,...). I select ID frequently with java code and.And that make a heavy load on transaction select from tableName where ID=someID notes: 1.Database could be 100,000 records 2.I can't cache result 3.ID is a primary key 4.I try to optimize time needed to return result from query. Any ideas for optimization ? thanks in advance

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• Getting a date value in a postgres table column and check if it's bigger than todays date

  - by Roland

  I have a Postgres table called clients. The name column contains certain values eg. test23233 [987665432,2014-02-18] At the end of the value is a date, I need to compare this date, and return all records where this specific date is younger than today I tried select id,name FROM clients where name ~ '(\d{4}\-\d{1,2}\-\d{1,2})'; but this isn't returning any values. How would I go about to achieve the results I want?

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• SQL server partitioning

  - by durilai

  I have a table that has millions of records and we are looking at implementing table partitioning. Looking at it we have a foreign key "GroupID" that we would like to partition on. Is this possible? The Group will have more entries added to it, so as new GroupID's are added can the partition's be made dynamically?

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• clearing an entire column in access

  - by I__

  is there a way to clear an entire column in a datasheet in access? i can just right click on it and delete it but that will affect the structure, i just need to clear all the records. how do i do this? perhaps the question i should be asking is how do i clear the entire contents of a datasheet in access?

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• A single button should be used in all the forms.

  - by mugamath

  i need to use a single button for all forms in a vb.net project. The single button should be called in the forms to perform operations. For eg., In a form i need to save, update the records. When i call the button, save and update buttons should be appeared at runtime using the single button. guide me....

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• Asterisk with new functions

  - by MhdAboAhmad

  hi all , please need help for an asterisk I created a write func odbc list records files in sql table: [R] dsn=connector write=INSERT INTO ast_records (filename,caller,callee,dtime) VALUES ('${ARG1}','${ARG2}','${ARG3}','${ARG4}') prefix=M and set it in dialplan : exten = _0X.,n,Set( M_R(${MIXMONITOR_FILENAME}\,${CUSER}\,${EXTEN}\,${DTIME})= ) when I excute it I get an error : ast_func_write: M_R Function not registered:

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• Automatically update or delete record(s) after x time in coldfusion

  - by Nich

  Hi, I've searched all over the net for this. Hope that someone's got something. How would a record in a database be updated automatically after x time n coldfusion? I know how to manually do it by writing an sql that performs an action to all records older than x time based on the timestamp. How would this be done automatically? Kind Regards, Nich

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• SQL select from data in query where this data is not already in the database?

  - by Michael

  I want to check my database for records that I already have recorded before making a webservice call. Here is what I imagine the query to look like, I just can't seem to figure out the syntax. SELECT FROM (1,2,3,4) WHERE id NOT IN table.id Is there a way to do this? What is a query like this called?

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• Getting duplicate count when executing INSERT IGNORE via JDBC

  - by Nickolay Komar

  Is it possible to get the duplicate count when executing MySQL "INSERT IGNORE" statement via JDBC? For example, when I execute an INSERT IGNORE statement on the mysql command line, and there are duplicates I get something like Query OK, 0 rows affected (0.02 sec) Records: 1 Duplicates: 1 Warnings: 0 Note where it says "Duplicates: 1", indicating that there were duplicates that were ignored. Is it possible to get the same information when executing the query via JDBC? Thanks.

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• Replace first Letter in a field Oracle

  - by Stanley

  Hi Guys I have this Table I need to replace the First Letter in ACCT_NAME with the First Name of ACCT_SHORT_NAME. Records like the Higliighted(RAFFMAN) should not be changed. I have tried: select acct_name, ACCT_SHORT_NAME,replace(acct_name, substr(acct_name, 1, 1), ACCT_SHORT_NAME) from tbaadm.gam where schm_type = 'TDA' and rcre_user_id = 'SYSTEM' and substr(acct_name,2,1) = ' ' I am getting: This means that am Picking the whole value in ACCT_SHORT_NAME. WHat is the best way to do what am trying to do?

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• keyboard interaction with Cocoa?

  - by mactonny

  Hey guys, I am trying do write an application(server) which receives the keyboard instructions from the client and execute them on the server end. It's more like those screen recorders which records your keyboard and mouse events and replay them. For example, you pull up a textedit on the server, type whatever you like on the client and you can see those letters on the server. I have no clues what materials I should look into, any suggestions?

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• MySQL Query For Copying Contents Into Another Field, Same Row

  - by Rob Adler

  Is there a single query (subqueries in it are allowed) where I can copy the content of one field into another field, per row. Example: price, and priceBackup Records: 45.55 47.77 45.55 copies into priceBackup for that specific row, 47.77 copies into priceBackup for that specific row. I do have a primary key, auto increment on it under 'id'. Thanks guys!

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• where can I get these kind of exercises to solve?

  - by flash

  Recently I did a Java programming exercise successfully which was sent by a recruiting firm, The problem statement goes like this 'There are two text files FI(records abt files and directory information) and FS(containing blocks of data) which represent a file Index and file System respectively and I was supposed to write a static read method in a class which will read the file from the FS depending upon the path string provided using FI' My question is where can I get these kind of exercises to solve, the complexity should be above average to tough.

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• C#: Deal with xml, treeview datagridview and datatables

  - by renulren

  Hi all, I am working on a project that pulls data out of an xml files and also uses a tree-grid combination in order to display the data. For example depending on the selected treeview node, the datagridview will display only the records related to that node. What do you think it would be the appropriate approach in dealing with this? Thanks!

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• Spring Web Flow

  - by cedric

  hi. I am really having a problem about what to use as an alternative for web flow. I have read that not all functionalities should be handled by web flow. Only those which needs complex xstate management. For those easy stuffs like just login, editing or deleting records what will I use as an alternative for web flow?

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• cakephp: how to make NOW() work in search condition ?

  - by kaklon

  I'm trying to get all records with date greater then now. I tried this but it doeasnt work: $all_dates = $this->TourDate->find('all', array('conditions' => array('TourDate.date >=' => 'NOW()'), 'order' => array('TourDate.date ASC'))); If I replace NOW() with the current date it works. Why's that?

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• Handling a button click in MVC, why is there a string parameter?

  - by SLC

  I'm following this awful textbook, going through the basics of create/edit/delete records. The delete bit has a confirm button, and it is handled like so: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Delete(int id, string confirmButton) { It offers no explanation of why the button is passed as a string or how MVC interprets it. Can anyone help clarify what's going on here? The Create code has no such string being passed.

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• Updating gridview using ado.net entity framework

  - by Ravi

  Hello everyone, I am trying to figure out the best way of getting the record and update in to gridview using ado.net entity framework in C#. I need implement Next & Previous button in gridview and based on pagesize i want to navigate records using Next&Back button. Any one give simple example for this context.

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• Is there a better way to retrieve unique ID upon INSERT?

  - by Andy

  Hi, I am using the following MS SQL statement to insert records and return the unique auto-inc ID value all in one shot. Wonder if there is a simpler/faster/better way to do it? SET NOCOUNT ON; DECLARE @res table (ID bigint); INSERT INTO [Titles] ([Name],[Timestamp],[Title]) OUTPUT INSERTED.ID INTO @res VALUES ('Name','23 aug 2010','this is a title'); SELECT [ID] FROM @res;

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• Validation - Data Integrity

  - by Thomas

  A table can only store 10 records in a particular state, 10 users over 30 years for example, the others must be less than 30 years. It is a business rule and as such should be respected. How to ensure that state? Think: multiple users accessing this table.

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• Which MySql line is faster:

  - by Camran

  I have a classified_id variable which matches one document in a MySql table. I am currently fetching the information about that one record like this: SELECT * FROM table WHERE table.classified_id = $classified_id I wonder if there is a faster approach, for example like this: SELECT 1 FROM table WHERE table.classified_id = $classified_id Wont the last one only select 1 record, which is exactly what I need, so that it doesn't have to scan the entire table but instead stops searching for records after 1 is found? Or am I dreaming this? Thanks

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• MySQL: LOAD DATA reclaim disk space after delete

  - by Michael

  I have a DB schema composed of MYISAM tables, i am interested to delete old records from time to time from some of the tables. I know that delete does not reclaim the memory space, but as i found in a description of DELETE command, inserts may reuse the space deleted In MyISAM tables, deleted rows are maintained in a linked list and subsequent INSERT operations reuse old row positions. I am interested if LOAD DATA command also reuses the deleted space? UPDATE I am also interested how the index space reclaimed?

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