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  • Refactoring if/else logic

    - by David
    I have a java class with a thousand line method of if/else logic like this: if (userType == "admin") { if (age > 12) { if (location == "USA") { // do stuff } else if (location == "Mexico") { // do something slightly different than the US case } } else if (age < 12 && age > 4) { if (location == "USA") { // do something slightly different than the age > 12 US case } else if (location == "Mexico") { // do something slightly different } } } else if (userType == "student") { if (age > 12) { if (location == "USA") { // do stuff } else if (location == "Mexico") { // do something slightly different than the US case } } else if (age < 12 && age > 4) { if (location == "USA") { // do something slightly different than the age > 12 US case } else if (location == "Mexico") { // do something slightly different } } How should I refactor this into something more managable?

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  • patterns in case statement in bash scripting

    - by Ramiro Rela
    The man says that case statements use "filename expansion pattern matching". I usually want to have short names for some parameters, so I go: case $1 in req|reqs|requirements) TASK="Functional Requirements";; met|meet|meetings) TASK="Meetings with the client";; esac logTimeSpentIn "$TASK" I tried patterns like "req*" or "me{e,}t" which I understand would expand correctly to match those values in the context of filename expansion, but it doesn't work. Thanks.

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  • Are these 2 sql queries equivalent in all respects (e.g. estimated and actual execution plan)?

    - by Xerion
    Are query 1) == 2) in terms of estimated query plan AND actual plan? (can statistics affect the actual plan here, ever?) declare @cat int -- input param from prc ... 1) select * from A as a join B as b on b.id = a.id on b.cat = @cat join C as c on c.fid = b.fid on c.cat = @cat where a.cat = @cat 2) select * from A as a join B as b on b.id = a.id on b.cat = a.cat join C as c on c.fid = b.fid on c.cat = b.cat where a.cat = @cat It seems to me that these should logically be equivalent and the execution plan should always be the same regardless of actual difference in tables. And adding more conditions either in join, or where, or add more tables to join shouldn't change this. Are there cases this is not true?

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  • How to group rows into two groups in sql?

    - by user1055638
    Lets say I have such a table: id|time|operation 1 2 read 2 5 write 3 3 read 4 7 read 5 2 save 6 1 open and now I would like to do two things: Divide all these records into two groups: 1) all rows where operation equals to "read" 2) all other rows. Sum the time in each group. So that my query would result only into two rows. What I got so far is: select sum(time) as total_time, operation group by operation ; Although that gives me many groups, depending on the number of distinct operations. How I could group them only into two categories? Cheers!

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  • How to get this done in mysql?

    - by bala3569
    Consider i have a registartion table and there is field prefLocationId and it contains value like this 1,2,3,2,1,4 and so many.... And i have a table prefLocation which looks like this Id LocationName 1 Chennai 2 Mumbai 3 Kolkatta 4 Delhi and i want to select record of users and show values like Chennai,Mumbai,Kolkatta,Mumbai,Chennai,Delhi and so on...

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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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  • Java using enum with switch statement

    - by MisterSquonk
    I've looked at various Q&As on SO similar to this question but haven't found a solution. What I have is an enum which represents different ways to view a TV Guide... static enum guideView { GUIDE_VIEW_SEVEN_DAY, GUIDE_VIEW_NOW_SHOWING, GUIDE_VIEW_ALL_TIMESLOTS } ...when the user changes the view an event handler receives an int from 0-2 and I'd like to do something like this... // 'which' is an int from 0-2 switch (which) { case NDroid.guideView.GUIDE_VIEW_SEVEN_DAY: ... break; } I'm used to C# enums and select/case statements which would allow something like the above and I know Java does things differently but I just can't make sense of what I need to do. Am I going to have to resort to if statements? There will likely only ever be 3 choices so I could do it but I wondered how it could be done with switch-case in Java.

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  • php multidimensional array if loop

    - by user1091558
    I have a multidimensional array like this array[value][1][1] Now i would like to implement if loop like this if ($value = array[value][1][1]) { echo "It works"; } Now it works if i assign the values like [1][1],[2][1]. Is it possible to compare the whole array. I mean if the array looks like array[value][1][1],array[value][2][1],..........,array[value][n][1] It works should be echoed. I tried like this. if ($value = array[value][][]) { echo "It works"; } But its not working. Can anyone give me the correct syntax?

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  • VBScript Multiple folder check if then statement

    - by user2868186
    I had this working before just fine with the exception of getting an error if one of the folders was not there, so I tried to fix it. Searched for a while (as much as I can at work) for a solution and tried different methods, still no luck and my IT tickets are stacking up at work, lol, woohoo. Thanks for any help provided. Getting syntax error on line 60 character 60, thanks again. Option Explicit Dim objFSO, Folder1, Folder2, Folder3, zipFile Dim ShellApp, zip, oFile, CurDate, MacAdd, objWMIService Dim MyTarget, MyHex, MyBinary, i, strComputer, objItem, FormatMAC Dim oShell, oCTF, CurDir, scriptPath, oRegEx, colItems Dim FoldPath1, FoldPath2, FoldPath3, foldPathArray Const FOF_SIMPLEPROGRESS = 256 'Grabs MAC from current machine strComputer = "." Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2") Set colItems = objWMIService.ExecQuery _ ("Select * From Win32_NetworkAdapterConfiguration Where IPEnabled = True") For Each objItem in colItems MacAdd = objItem.MACAddress Next 'Finds the pattern of a MAC address then changes it for 'file naming purposes. You can change the FormatMAC line of the code 'in parenthesis where the periods are, to whatever you like 'as long as its within the standard file naming convention Set oRegEx = CreateObject("VBScript.RegExp") oRegEx.Pattern = "([\dA-F]{2}).?([\dA-F]{2}).?([\dA-F]" _ & "{2}).?([\dA-F]{2}).?([\dA-F]{2}).?([\dA-F]{2})" FormatMAC = oRegEx.Replace(MacAdd, "$1.$2.$3.$4.$5.$6") 'Gets current date in a format for file naming 'Periods can be replaced with anything that is standard to 'file naming convention CurDate = Month(Date) & "." & Day(Date) & "." & Year(Date) 'Gets path of the directory where the script is being ran from Set objFSO = CreateObject("Scripting.FileSystemObject") scriptPath = Wscript.ScriptFullName Set oFile = objFSO.GetFile(scriptPath) CurDir = objFSO.GetParentFolderName(oFile) 'where and what the zip file will be called/saved MyTarget = CurDir & "\" & "IRAP_LOGS_" & CurDate & "_" & FormatMAC & ".zip" 'Actual creation of the zip file MyHex = Array(80, 75, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0) For i = 0 To UBound(MyHex) MyBinary = MyBinary & Chr(MyHex(i)) Next Set oShell = CreateObject("WScript.Shell") Set oCTF = objFSO.CreateTextFile(MyTarget, True) oCTF.Write MyBinary oCTF.Close Set oCTF = Nothing wScript.Sleep(3000) folder1 = True folder2 = True folder3 = True 'Adds folders to the zip file created earlier 'change these folders to whatever is needing to be copied into the zip folder 'Folder1 If not objFSO.FolderExists("C:\Windows\Temp\SMSTSLog") and If not objFSO.FolderExists("X:\Windows\Temp\SMSTSLog") then Folder1 = false End If If objFSO.FolderExists("C:\Windows\Temp\SMSTSLog") Then Folder1 = "C:\Windows\Temp\SMSTSLog" Set FoldPath1 = objFSO.getFolder(Folder1) Else Folder1 = "X:\windows\Temp\SMSTSLog" Set FoldPath1 = objFSO.getFolder(Folder1) End If 'Folder2 If not objFSO.FolderExists("C:\Windows\System32\CCM\Logs") and If not objFSO.FolderExists("X:\Windows\System32\CCM\Logs") then Folder2 = false End If If objFSO.FolderEXists("C:\Windows\System32\CCM\Logs") Then Folder2 = "C:\Windows\System32\CCM\Logs" Set FoldPath2 = objFSO.getFolder(Folder2) Else Folder2 = "X:\Windows\System32\CCM\Logs" Set FoldPath2 = objFSO.getFolder(Folder2) End If 'Folder3 If not objFSO.FolderExists("C:\Windows\SysWOW64\CCM\Logs") and If not objFSO.FolderExists("X:\Windows\SysWOW64\CCM\Logs") then Folder3 = false End If If objFSO.FolderExists("C:\Windows\SysWOW64\CCM\Logs") Then Folder3 = "C:\Windows\SysWOW64\CCM\Logs" set FolderPath3 =objFSO.getFolder(Folder3) Else Folder3 = "X:\Windows\SysWOW64\CCM\Logs" Set FoldPath3 = objFSO.getFolder(Folder3) End If set objFSO = CreateObject("Scripting.FileSystemObject") objFSO.OpenTextFile(MyTarget, 2, True).Write "PK" & Chr(5) & Chr(6) _ & String(18, Chr(0)) Set ShellApp = CreateObject("Shell.Application") Set zip = ShellApp.NameSpace(MyTarget) 'checks if files are there before trying to copy 'otherwise it will error out If folder1 = True And FoldPath1.files.Count >= 1 Then zip.CopyHere Folder1 End If WScript.Sleep 3000 If folder2 = true And FoldPath2.files.Count >= 1 Then zip.CopyHere Folder2 End If WScript.Sleep 3000 If folder3 = true And FoldPath3.files.Count >= 1 Then zip.CopyHere Folder3 End If WScript.Sleep 5000 set ShellApp = Nothing set ZipFile = Nothing Set Folder1 = Nothing Set Folder2 = Nothing Set Folder3 = Nothing createobject("wscript.shell").popup "Zip File Created Successfully", 3

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  • SQL query select from table and group on other column...

    - by scaryjones
    I'm phrasing the question title poorly as I'm not sure what to call what I'm trying to do but it really should be simple. I've a link / join table with two ID columns. I want to run a check before saving new rows to the table. The user can save attributes through a webpage but I need to check that the same combination doesn't exist before saving it. With one record it's easy as obviously you just check if that attributeId is already in the table, if it is don't allow them to save it again. However, if the user chooses a combination of that attribute and another one then they should be allowed to save it. Here's an image of what I mean: So if a user now tried to save an attribute with ID of 1 it will stop them, but I need it to also stop them if they tried ID's of 1, 10 so long as both 1 and 10 had the same productAttributeId. I'm confusing this in my explanation but I'm hoping the image will clarify what I need to do. This should be simple so I presume I'm missing something.

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  • SQL -- How is DISTINCT so fast without an index?

    - by Jonathan
    Hi, I have a database with a table called 'links' with 600 million rows in it in SQLite. There are 2 columns in the database - a "src" column and a "dest" column. At present there are no indices. There are a fair number of common values between src and dest, but also a fair number of duplicated rows. The first thing I'm trying to do is remove all the duplicate rows, and then perform some additional processing on the results, however I've been encountering some weird issues. Firstly, SELECT * FROM links WHERE src=434923 AND dest=5010182. Now this returns one result fairly quickly and then takes quite a long time to run as I assume it's performing a tablescan on the rest of the 600m rows. However, if I do SELECT DISTINCT * FROM links, then it immediately starts returning rows really quickly. The question is: how is this possible?? Surely for each row, the row must be compared against all of the other rows in the table, but this would require a tablescan of the remaining rows in the table which SHOULD takes ages! Any ideas why SELECT DISTINCT is so much quicker than a standard SELECT?

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  • MYSQL - SQL query Getting single record for the similar records and populating other columns with which has more length

    - by Bujji
    Here is my case , I have a database table with below fields name place_code email phone address details estd others and example data if you look at the above example table First three records are talking about XYZ and place code 1020 . I want create a single record for these three records based on substring(name,1,4) place_code ( I am lucky here for all the similar records satisfies this condition and unique in the table .) For the other columns which record column length has max . For example again for the above 3 records email should be [email protected] , phone should be 657890 and details should be "testdetails" This should be done for all the table . (Some has single records and some has max 10 records ) Any help on query that helps me to get the desired result ? Thank You Regards Kiran

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  • SQL Server: How to tell if a database is a system database?

    - by Vinko Vrsalovic
    I know that so far (until MSSQL 2005 at least), system databases are master, model, msdb and tempdb. Thing is, as far as I can tell, this is not guaranteed to be preserved in the future. And neither the sys.databases view nor the sys.sysdatabases view tell me if a database is considered as a system database. Is there someplace where this information (whether a database is considered a system database or not) can be obtained?

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  • Sql Server 2000 Stored Procedure Prevents Parallelism or something?

    - by user187305
    I have a huge disgusting stored procedure that wasn't slow a couple months ago, but now is. I barely know what this thing does and I am in no way interested in rewriting it. I do know that if I take the body of the stored procedure and then declare/set the values of the parameters and run it in query analyzer that it runs more than 20x faster. From the internet, I've read that this is probably due to a bad cached query plan. So, I've tried running the sp with "WITH RECOMPILE" after the EXEC and I've also tried putting the "WITH RECOMPLE" inside the sp, but neither of those helped even a little bit. When I look at the execution plan of the sp vs the query, the biggest difference is that the sp has "Parallelism" operations all over the place and the query doesn't have any. Can this be the cause of the difference in speeds? Thank you, any ideas would be great... I'm stuck.

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  • Is "campaign_$" a bad name for a SQL column?

    - by Summer
    PostgreSQL has allowed me to name a column "campaign_$". I like the name because it's short and to the point, and other potential names like "campaign_receipts" seem longer and less clear. BUT, I wonder if I'll eventually regret putting a $ symbol in a column name, either in PHP or in some other distant part of the architecture. Should I just stick to letters and underscores? Thanks!

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  • Get insert statement query

    - by Karthick
    Hi, Is there a way to get the insert statements for a table via some query in MySql? for ex: if the table name is Cards,which has 5 rows, i need to get the insert statements for that particular table. Thanks.

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  • Querying a smalldatetime's date and time seperately in SQL server?

    - by Kylee
    Imagine a table that has two fields, a smalltimedate and an int and about 1000 rows of data. What I'm attempting to do in query is to find the average of the INT field for rows between 3/3/2010 - 3/13/2010 and only if the entry is between 6:00am - 11:00pm. I tried between '2010-03-03 06:00 AND 2010-03-13 23:00' However that only restricts that very beginning and end times. I could do this with a loop but I'm going to need to have the same query run over much larger date ranges and this will quickly eat server resources. Is there a way to query date and time seperately?

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  • postgres syntax question for OR?

    - by Dashiell0415
    The first one below works, but, just wanted to see if there's a better way... If I'm trying to find all records that start with 'C' with either a flag of 2 or a status of 9, do I need to incorporate the 'C' criteria twice? i.e., "SELECT * FROM mytable WHERE name like 'C%' AND flag = 2 OR name like 'C%' AND status = 9" Or, is there a way quicker way to write it so that I only need to set 'C%' once?

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  • Autohotkey to map F5 to Shift+Home and then F5 - eventually executing a single line query in sql server?

    - by puretechy
    Reading the syntax from autohotkey, I am trying to achieve this. But the first step of selecting the entire line is not working:- F5:: send {Shift Home} return I have tried few others too, but its not working. This is not sending Shift+Home combination on pressing F5 key. Please tell me what's wrong with this? Also if possible, what to do next?, as if I will write send {F5} I believe, it will recursively fire this script again and again..

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  • 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.

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