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• Help with simple query - why isn't an index being used?

  - by Randy Minder

  I have the following query: SELECT MAX([LastModifiedTime]) FROM Workflow There are approximately 400M rows in the Workflow table. There is an index on the LastModifiedTime column as follows: CREATE NONCLUSTERED INDEX [IX_Workflow_LastModifiedTime] ON [dbo].[Workflow] ( [LastModifiedTime] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 100) The above query takes 1.5 minutes to execute. Why wouldn't SQL Server use the above index and simply retrieve the last row in the index to get the maximum value? Thanks.

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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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• What is wrong with this SQL syntax?

  - by Finbarr

  UPDATE files SET filepath = REPLACE(filepath, `sites/somedomain.com/files/`, `sites/someotherdomain.com/files/`); I have a table called files with a field called filepath. MySQL returns this error: Unknown column 'sites/somedomain.com/files/' in 'field list'

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• how to get Next month date from today date (i.e) exactely one month expires from today date

  - by Ranjana

  i have maintained two datas into my table 1 column 2 column PaidDate validitydate in padidate ill give insert todaydate. but in validity date i may either insert validity for 1 week/1 month. I have used validity=DATEADD(Day,7,@paiddate) to insert validity for 1 week. but how to gtet the validity for 1 month from todays date

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• Mysql query for within a specific date

  - by Ajith

  I need to retrieve data from within a specific date range.Anybody can help me to create a query to getting the information within date range 12-12-2009 to 12-15-2009 from a mysql table.(including 12 and 15)

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• nested sql statements

  - by Hadad

  Hello, I've a self join table when I delete or update it's id I want to delete or update all the direct and indirect affected records SQL server does not allow this type of cycle cascading I've decided to use triggers but this triggers will file recursively and they will be terminated at 34 level and I don't know the depth of records and event I disable the trigger and re enable it after completing the process how can I construct a SQL statement that achieve this logic?

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• Change css class depending on label's text

  - by abatishchev

  I have asp:Table with number of asp:Label inside asp:FormView, it represents short stats info. I need to set Label.CssClass to "red" if it's text isn't "0". Currently I do this on FormView.DataBound event. But think that it's better to use JavaScript and probably jQuery. How can I do that?

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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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• two sql queries in one place

  - by Luke

  <?php $results = mysql_query("SELECT * FROM ".TBL_SUB_RESULTS." WHERE user_submitted != '$_SESSION[username]' AND home_user = '$_SESSION[username]' OR away_user = '$_SESSION[username]' ") ; $num_rows = mysql_num_rows($results); if ($num_rows > 0) { while( $row = mysql_fetch_assoc($results)) { extract($row); $q = mysql_query("SELECT name FROM ".TBL_FRIENDLY." WHERE id = '$ccompid'"); while( $row = mysql_fetch_assoc($q)) { extract($row); ?> <table cellspacing="10" style='border: 1px dotted' width="300" bgcolor="#eeeeee"> <tr> <td><b><? echo $name; ?></b></td> </tr><tr> <td width="100"><? echo $home_user; ?></td> <td width="50"><? echo $home_score; ?></td> <td>-</td> <td width="50"><? echo $away_score; ?></td> <td width="100"><? echo $away_user; ?></td> </tr><tr> <td colspan="2"><A HREF="confirmresult.php?fixid=<? echo $fix_id; ?>">Accept / Decline</a></td> </tr></table><br> <? } } } else { echo "<b>You currently have no results awaiting confirmation</b>"; } ?> I am trying to run two queries as you can see. But they aren't both working. Is there a better way to structure this, I am having a brain freeze! Thanks OOOH by the way, my SQL wont stay in this form! I will protect it afterwards

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• Records featch for DataTable

  - by Ravi

  Hi, I have added 1000 records into DataTable using C#.Net. This data table contains TimeStamp column for specified data stored time. Data stored into 10.00AM to 11.00AM every 10 seconds once. Here i want to featch only 10.15AM to 10.30AM records using C#. Thanks

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• SQL and/or LINQ query for determining daily increases in viewers

  - by Gio

  We're montioring usage of a certain resources by monitoring users logins (We can see user logins growing daily). After filtering out repeat inter day logins for users, we'd like to track the # of users using the service each day, and then using that info to determine overall incremental gains for each calendar day. Our table is pretty simple: class ServiceLogin { String login; DateTime loginTime; }

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• indentationLevel property doesn't appear to do anything?

  - by JoBu1324

  I'm have a number rows I'm inserting into a table using -insertRowsAtIndexPaths:withRowAnimation, and I would like the rows to be indented from the left to distinguish them from the rest of the cells. The indentationLevel property of UITableViewCell looks like it's exactly what I need, but it doesn't seem to do anything. Here's the code I'm using to set the indentation level (dot syntax doesn't make a difference): [cell setIndentationWidth:10]; [cell setIndentationLevel:1]; Is indentationLevel what I want, or should I be looking elsewhere?

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• How get the names of all the tables from a database in a combo box using c#

  - by syedsaleemss

  Im using c# .net windows form application. i have a SQL database with 5 tables. i need to populate a combobox with these table names. only names should be displayed.

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• help with sql-server query - dates

  - by Gold

  hi i have this table: id|date 1 | 10/11/2009 2 | 13/11/2009 1 | 20/12/2009 3 | 21/12/2009 1 | 30/12/2009 if i stand on the last record (id=1) and i need to see the last date where id=1 is appear -- will show me: 1 | 20/12/2009 what query will do it ? thank's in advance

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• What's the error in my MySQL statement?

  - by Jim

  The following SQL statement has a syntax error according to phpMyAdmin, but I can't spot what it is. Any ideas? CREATE TABLE allocations( `student_uid` INT unsigned NOT NULL DEFAULT 0, `active` INT unsigned NOT NULL DEFAULT 1, `name` VARCHAR( 255 ) NOT NULL DEFAULT '', `internal_id` VARCHAR( 255 ) DEFAULT '', `tutor_uid` INT NOT NULL DEFAULT 0, `allocater_uid` INT unsigned NOT NULL DEFAULT 0, `time_created` INT NOT NULL DEFAULT 0, `remote_time` FLOAT NOT NULL DEFAULT 0, `next_lesson` VARCHAR NOT NULL DEFAULT -1, PRIMARY KEY ( student_uid ) );

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• Retrieving Data in A NSTableView

  - by Heisennberg

  I have a three column Table View populated by two NSMutableDictionaries which share the same keys (ie key | value1 | value2 ) with dict1(key,value1) and dict2(key,value2). I want to manually enter data in the third column and create the key/value objects in dict2. But when I do that, my code picks the wrong key :S Here's the code for the delegate : - (void)tableView:(NSTableView *)aTableView setObjectValue:(id)anObject forTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex { if ([[aTableColumn identifier] isEqualToString:@"value2"]) { [dict2 setValue:anObject forKey:[[[aTableView tableColumnWithIdentifier:@"key"] dataCellForRow:rowIndex] stringValue ]]; } } Any idea ?

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• How to find size of individual columns and indexes in mysql/innodb database?

  - by taw

  SHOW TABLE STATUS LIKE 'foo' returns Data_length - size of all data, and Index_length - size of all indexes. What's the best way to get per-column and per-index breakdown?

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• “Function” calling inside store procedure

  - by idimba

  Hi, I have a big store procedure, that contains a lot of INSERTs. There're many INSERTS that almost identical - they're different by some parameter(s) (all INSERTs to the same table) Is there a way to create a function/method, to which I'll pass the above parameter(s) and the function/method will generate concrete INSERT's? Thanks

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• mysqldump problem with case sensitivity? Win->linux

  - by acidzombie24

  When i dump a table with uppercase letters using mysqldump it comes out as lower case in my dump.sql file. I found a report here in 2006, almost 4 years old http://bugs.mysql.com/bug.php?id=19967 A solution here suggest making linux insensitive. I rather not if possible. Whats the easiest way to copy a win32 db into linux?

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• MySQL - Limit a left join to the first date-time that occurs?

  - by John M

  Simplified table structure (the tables can't be merged at this time): TableA: dts_received (datetime) dts_completed (datetime) task_a (varchar) TableB: dts_started (datetime) task_b (varchar) What I would like to do is determine how long a task took to complete. The join parameter would be something like ON task_a = task_b AND dts_completed < dts_started The issue is that there may be multiple date-times that occur after the dts_completed. How do I create a join that only returns the first tableB-datetime that occurs after the tableA-datetime?

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• Python templates for huge HTML/XML

  - by newtover

  Hello, Recently I needed to generate a huge HTML page containing a report with several thousand row table. And, obviously, I did not want to build the whole HTML (or the underlying tree) in memory. As result, I built the page with the old good string interpolation, but I do not like the solution. Thus, I wonder whether there are Python templating engines that can yield resulting page content by parts.

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• mysql - How select a akin records?

  - by zeroonea

  I have a table with name varchar address varchar country varchar city varchar ..... to store address of location example: name|address|country HaLong hotel|156 blahblah street|Vietnam Hotel Ha Long|156 blah blah|Vietnam Two rows above is duplicate data. I have a form, when user submit new location. The code need to find akin records to give a message (ex: This location already in db, use it or create new?) How to make a query to get akin record like this?

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• Find amount of updated rows in T-SQL

  - by Alex

  I need to find the amount of updated rows UPDATE Table SET value=2 WHERE value2=1 declare @aaa int set @aaa = @@ROWCOUNT It doesn't work. How can I do that?

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• subqueries in UPDATE SET (sql server 2005)

  - by itdebeloper

  I have a question about using subqueries in an Update statement. My example: UPDATE TRIPS SET locations = city + ', ' FROM (select Distinct city from poi where poi.trip_guid = trips.guid) Is it possible to refer to main table value (trips.guid) in subqueries? When i try to use trips.guid I get the error: "The multi-part identifier "trips.guid" could not be bound."

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• how do i do very fast inserts to SQL Server 2008

  - by CharlesO

  I have a project that involves recording data from a device directly into a sql table. I do very little processing in code before writing to sql server (2008 express by the way) typically i use the sqlhelper class's ExecuteNoneQuery method and pass in a stored proc name and list of parameters that the SP expects. This is very convenient, but i need a much faster way of doing this. Thanks.

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