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  • Writing a simple conditional statement in IRB

    - by Trip
    I am looking up all Organizations with the url "http://", and updating their attributes to "". My attempt: Organization(:all).select { |o| o.url = "http://" ? o.update_attribute("url","")} Which returns a compile error: SyntaxError: compile error (irb):2: syntax error, unexpected '}' from (irb):2 Any ideas?

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  • mysql IF EXISTS

    - by cosy
    What is wrong with this ? mysql_query("IF EXISTS(SELECT * FROM y where 1=1 ) THEN do something ELSE do something END IF"); Thanks!

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  • Linq to Entity Dynamic where clause

    - by GodSmart
    I have Linq to Entity query like you can see below I am using it five times in my code, everything that change is where clause. is it possible to create a method and pass just where values, not to write all code five times. Thank you items = from t1 in _entities.table1 join t2 in _entities.Table2 on t1.column1 equals t2.column1 join t3 in _entities.Table3 on t1.column2 equals t3.column2 join t4 in _entities.Table4 on t1.column3 equals t4.column3 where **t1.column5 == Something** select new { t1.column7, t2.column8, t3.column9, t4.column10 };

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  • SQL - How to display the students with the same age?

    - by Cristian
    the code I wrote only tells me how many students have the same age. I want their names too... SELECT YEAR(CURRENT DATE-DATEOFBIRTH) AS AGE, COUNT(*) AS HOWMANY FROM STUDENTS GROUP BY YEAR(CURRENT DATE-DATEOFBIRTH); this returns something like this: AGE HOWMANY --- ------- 21 3 30 5 Thank you. TABLE STUDENTS COLUMNS: StudentID (primary key), Name(varchar), Firstname(varchar), Dateofbirth(varchar) I was thinking of maybe using the code above and somewhere add the function concat that will put the stundents' names on the same row as in

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  • convert a sql statement to class?

    - by walter
    Is there a tool or code to convert a sql statement to class? Something like: Dim sqlText = "SELECT CustomerID, Name, Address, City FROM dbo.Customer WHERE CustomerID = 1" Dim obj As New ***SqlStatementTool***(sqlText) obj.GetTables() 'Will Return Tables in sqlText obj.GetWheres() 'Will Return conditions in sqltext obj.GetParameters() 'will return parameters in sqltext

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  • Convert XML to UDT in Oracle

    - by Josh
    Is there an easy way to convert an XMLType to a User Defined Type? I can convert the UDT to XMLType using the below. select SYS_XMLGEN(pUDT) into param2 from dual; I can't though, is find a function that takes that and turns it back into that UDT using the same mappings the SYS_XMLGEN used.

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  • compiling a linq to sql query

    - by frenchie
    Hi, I have queries that are built like this: public static List<MyObjectModel> GetData (int MyParam) { using (DataModel MyModelDC = new DataModel()) { var MyQuery = from.... select MyObjectModel { ...} } return new List<MyObjectModel> (MyQuery) } } It seems that using compiled linq-to-sql queries are about as fast as stored procedures and so the goal is to convert these queries into compiled queries. What's the syntax for this? Thanks.

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  • "preprocess current file" addin for Visual Studio? (C++ )

    - by Virgil
    I realize that Visual Studio has the "/P" option to generate preprocessed files, but it's extremely inconvenient. I'm looking for an addin that allows you to right-click on a file and select "view preprocessed" - or any similar solution that would basically preprocess the currently-open file (with the appropriate options from the current configuration) and show me the output, with no extra hassle. Does such a thing exist?

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  • Check if row exists, if not add it [MySQL]

    - by Steven
    I need to add a row to a MySQL database table but only if the row doesn't already exist. My database server just went down so I can't test this, but will this work as expected? INSERT INTO `blocks` (`block_file`,`settings_group`) VALUES ('announcements','announcement_settings') WHERE NOT EXISTS (SELECT `block_file`,`settings_group` FROM `blocks` WHERE `block_file`='announcements' AND `settings_group`='announcement_settings') It seems like sound logic. Is this a valid query or is there a better way of doing this?

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  • showcase website in album

    - by proyb2
    What is the best gallery to showcase web design you have came across? Plan to get various creative agencies to showcase their works on an advertisement platform so that new user will be able to see various portfolio. When it come to select a suitable album, I am indecisive if it too plain (Load and display) or too flashy (coverflow album), which album/gallery script do you recommend for our corporate theme? I would prefer background to be white.

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  • I want to display the missing (non-matching) records

    - by Eric
    Is there a way to program the following SQL query SELECT dbo.Assets_Master.Serial_Number, dbo.Assets_Master.Account_Ident, dbo.Assets_Master.Disposition_Ident FROM dbo.Assets_Master LEFT OUTER JOIN dbo.Assets ON dbo.Assets_Master.Serial_Number = dbo.Assets.Serial_Number WHERE (dbo.Assets.Serial_Number IS NULL) in c# .net code using dataviews or data relation or something else? I have a spreadsheet of about 4k rows and a data table that should have the same records but if not I want to display the missing (non-matching) records from the table. Thanks, Eric

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  • The explain tells that the query is awful (it doesn't use a single key) but I'm using LIMIT 1. Is th

    - by Ricardo
    The explain command with the query: explain SELECT * FROM leituras WHERE categorias_id=75 AND textos_id=190304 AND cookie='3f203349ce5ad3c67770ebc882927646' AND endereco_ip='127.0.0.1' LIMIT 1 The result: id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE leituras ALL (null) (null) (null) (null) 1022597 Using where Will it make any difference adding some keys on the table? Even that the query will always return only one row.

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  • SQL Server Update Group by

    - by Gerardo Abdo
    I'm trying to execute this on MS-SQL but returns me an error just at the Group by line update #temp Set Dos=Count(1) From Temp_Table2010 s where Id=s.Total and s.total in (Select Id from #temp) group by s.Total Do anyone knows how can I solve this problem having good performance.

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  • Django left join m2m field.

    - by duder
    Here's my Model: class User(models.Model): pass class Item(models.Model): pass class ItemVote(models.Model): user = models.ForeignKey(User) item = models.ForeignKey(Item) vote = models.BooleanField() I want to retrieve a list of Items, and I want to know if the current user has voted for each Item. How do I alter my query object so that it will generate sql similar to: SELECT ... FROM items LEFT OUTER JOIN item_votes ON (item_votes.user_id = ? AND item_votes.item_id = items.id)

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  • mysql query and index

    - by parm.95
    Does this query will be faster with a index on "t.type1" and "x.type1" or only index on "x.type1" is enought? SELECT t.id, x.id FROM t INNER JOIN x ON x.type1=t.type1 WHERE t.id=1

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  • Error using iif in ms access query

    - by naveen
    I am trying to fire this query in MS Access SELECT file_number, IIF(invoice_type='Spent on Coding',SUM(CINT(invoice_amount)), 0) as CodingExpense FROM invoice GROUP BY file_number I am getting this error Error in list of function arguments: '=' not recognized. Unable to parse query text. I tried replacing IIF with SWITCH to no avail. What's wrong with my query and how to correct this?

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  • WordPress SQL Query on Category/Terms

    - by mroggle
    Hi, i am modifying a plugin slightly to meet my needs, and need to change this query to return post ID's of just one category. I know it has something to do with INNER JOIN, but cant get the query right. Here is the original query $query = "SELECT ID as PID FROM $wpdb->posts"; $results = $wpdb->get_results($querydetails,ARRAY_A);

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