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• What is the proper way to get the current look-and-feel's component background color in Swing?

  - by John B.

  I am writing a custom Swing component with my own painting. I'd like to query whether or not the current look and feel's components are opaque, and if so, what their background color is so my component can use it too. I'm having a hard time finding that on Google. Anyone know? Thanks!

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• sql - getting the id from a row based on a group by

  - by user85116

  Table A tableAID tableBID grade Table B tableBID name description Table A links to Table b from the tableBID found in both tables. If I want to find the row in Table A, which has the highest grade, for each row in Table B, I would write my query like this: select max(grade) from TableA group by tableBID However, I don't just want the grade, I want the grade plus id of that row.

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• MSSQL. Compare columns in two tables.

  - by maxt3r

  Hi, i've recently done a migration from a really old version of some application to the current version and i faced some problems while migrating databases. I need a query that could help me to compare columns in two tables. I mean not the data in rows, i need to compare the columns itself to figure out, what changes in table structure i've missed.

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• Calculating average (AVG) and grouping by week on large data set takes too long

  - by caioiglesias

  I'm getting average prices by week on 7 million rows, it's taking around 30 seconds to get the job done. This is the simple query: SELECT AVG(price) as price, yearWEEK(FROM_UNIXTIME(timelog)) as week from pricehistory where timelog > $range and product_id = $id GROUP BY week The only week that actually gets data changed and is worth averaging every time is always the last one, so this calculation for the whole period is a waste of resources. I just wanted to know if mysql has a tool to help out on this.

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• How to: compare array with string and create hastags before tweeting

  - by krike

  Let's say I have the following array (which is the returned value of a database query): Array ( [0] => PHP [1] => Webdesign [2] => Wordpress [3] => Drupal [4]) And the following string: Working With Wordpress Shortcodes How can I compare the array with the string to see if the string contains any word stored in the array? (hopefully that made sense to you :d ) When he finds a match (eg: Wordpress) it should create a hashtag like so: Working With #Wordpress Shortcodes

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• How to write stored procedure to do this?

  - by chobo

  I would like to create a stored procedure that takes in a string of comma separated values like this "1,2,3,4", and break it apart and use those numbers to run a query on a different table. so in the same stored procedure it would do something like select somefield from sometable where somefield = 1 select somefield from sometable where somefield = 2 select somefield from sometable where somefield = 3 select somefield from sometable where somefield = 4 Thanks!

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• How to save Excel date time cell into MySQL using VBA?

  - by mysqlizor

  The mysql table has a DATETIME field. I want to INSERT a new row into this field using the cell data from the Excel worksheet. But I cannot use the datetime formatted cell value in a INSERT INTO query. How can I implement this?

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• Efficiently store last X items in an MySQL Database

  - by Saif Bechan

  I want to store the last 3 items in an MySQL database in an efficient way. So when the 4th item is stored the first should be deleted. The way I do this not is first run a query getting the items. Than check what I should do then insert/delete. There has to be a better way to do this. Any suggestions?

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• MySQL INSERT IGNORE not working

  - by gAMBOOKa

  Here's my table with some sample data a_id | b_id ------------ 1 225 2 494 3 589 When I run this query INSERT IGNORE INTO table_name (a_id, b_id) VALUES ('4', '230') ('2', '494') It inserts both those rows when it's supposed to ignore the second value pair (2, 494) No indexes defined, neither of those columns are primary. What don't I know?

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• Solve:Value was either too large or too small for an Int32.

  - by jithincool

  I am passing query string and the url is as follows- http://localhost:1086/Web/EditMobile.aspx?sno=2. But when i try to enter the url as follows,localhost:1086/Web/EditMobile.aspx?sno=2*3424324423432424* , i get the following error-Value was either too large or too small for an Int32. How do i handle this error. I must get an error report like " the value is not found in the table or database"

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• Creating Auto Incrementing column in Google Appengine

  - by demos

  What is the easiest and most efficient way to create an auto-increment counter for every data row in google appengine? basically I want to give every row a unique row_number so that I can overcome the issue of only being able to get the first 1000 results in a select query. I can thus add a counter lies between condition and mine all the entires in the table.

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• Returning Null values with COUNT

  - by Randy B.

  With this query, I get a result that is two short of the table because they are not included in count, and I would like get the NULL values in the result. To do this, I am pretty sure I need to use a subquery of some kind, but I am not sure how, since the attribute in question is an aggregate. SELECT Equipment.SerialNo , Name, COUNT(Assignment.SerialNo) FROM Equipment INNER JOIN Assignment ON Assignment.SerialNo = Equipment.SerialNo GROUP BY Equipment.SerialNo, Name

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• what is the optimal database connection strategy

  - by ooo

  i have a asp.net mvc website which runs a number of queries for each page. Should i open up a single connection or open and close a connection on each query?

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• Is it possible to debug an ad-hoc version of an iPhone app on iPhone using XCode?

  - by user262325

  I have an app that reads and writes data from sqlite3. I tested it on the simulator it looks like everything is OK. But if the ad-hoc version does a 'delete' or 'insert' query in the sqlite3 file on iPhone, it crashes. Is it possible to debug ad hoc versions of iPhone apps with XCode?

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• Equivalent of Oracle’s RowID in MySQL

  - by echo

  is there an equivalent of oracle's rowid in mysql? delete from my_table where rowid not in (select max(rowid) from my_table group by field1,field2) I want to make a mysql equivalent of this query!!! What i'm trying to do is, : The my_table has no primary key.. i'm trying to delete the duplicate values and impose a primary key (composite of field1, field2)..!!

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• Use subform record set as domain argument in DAvg()

  - by harto

  Is it possible to use a subform's 'current' record set as the domain argument to DAvg() (etc.)? Basically, I have a subform that displays a subset of records from a query. I would like to run DAvg() over this subset. This is how I've gotten around it: =DAvg([FieldToAvg], [SubformQuery], "ChildField=Forms.MasterForm.MasterField And FieldToAvg > 0") but what I actually want is something like: =DAvg([FieldToAvg], [SubformCurrentlyDisplayedData], "FieldToAvg > 0") Is this possible in Access 2007?

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• WTF why does this SQL work in VS but not in CODE?

  - by acidzombie24

  The line cmd.ExecuteNonQuery(); cmd.CommandText CREATE TRIGGER subscription_trig_0 ON subscription AFTER INSERT AS UPDATE user_data SET msg_count=msg_count+1 FROM user_data JOIN INSERTED ON user_data.id = INSERTED.recipient; The exception: Incorrect syntax near the keyword 'TRIGGER'. Then using VS 2010, connected to the very same file (a mdf file) i run the query above and i get a success message. WTF!

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• nhibernate, Retrieve the latest row in a table

  - by Blankman

  A user can have many addresses, but I want to retrieve the latest entry for the user. In sql I would do: SELECT TOP 1 * FROM UserAddress WHERE userID = @userID How can I create a criteria query with the same logic? Is there a TOP functionality?

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• self join table

  - by San82moon

  HI, i have a table, new_id----old_id----created_on 1234------5678------20100912 5678------3456------20100808 etc. i wrote this query, $q = "select event1.new_id, event1.old_id, event1.created_on,event2.new_id, event2.old_id, event2.created_on FROM replaced_isbns event1 JOIN replaced_isbns event2 ON event2.new_id = event1.old_id WHERE event1.new_id='$id'"; but i get result as 5678 - 1234, ie only one row, i want all rows... plz help me. Thanks, SLC

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• Do views only perform the joins that they need to, or all joins always?

  - by Nate

  I am on an oracle DB. Lets say I have one view that joins to three tables. The view has two fields each. Each field only needs data from two of the three tables. If I query the view and return only one field, does the view still join to three tables or just to the two tables that it needs to calculate the field?

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• How to fetch the first 2 or 3 rows from Mysql DB using Mysql PHP function?

  - by OM The Eternity

  How to fetch the first two rows from Mysql DB using Mysql PHP function? Is there any function which can give me first 2 or 3 rows from the select query we fired?

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• i want to add a column in my table.. can any body help me for that..

  - by Abid

  there is already some columns added in my table starsin.. i want to add a column address in my table starsin by using a query..

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• MySQL: how to index an "OR" clause

  - by JoséMi

  I'm executing the following query SELECT COUNT(*) FROM table WHERE field1='value' AND (field2 = 1000 OR field3 = 2000) There is one index over field1 and another composited over field2&field3. I see MySQL always selects the field1 index and then makes a join using the other two fields which is quite bad because it needs to join 146.000 rows. Suggestions on how to improve this? Thanks

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• mozilla firefox page redirection

  - by java_geek

  When i search for some query and click on any of the results, the link is being redirected to some random sites. What could be the reason behind this? This happens with firefox

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• Mysql - NOW() function calling

  - by Ockonal

  Hello, I'm using php for making queries for mysql. Here is one: UPDATE `subscribers` SET `curDate` = NOW() WHERE `e_mail` = "$resEmail" curDate - DateTime type. The problem is that after this query curDate of given email is 0000-00-00 00:00:00 What's wrong?

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