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  • mySQL : using BETWEEN in table ?

    - by Meko
    I have a table that includes somestudent group name ,lesson time,day names like Schedule. I am using C# whit MYSql and I want to find which lesson is when user press button from table. I can find it like entering exact value like in table 08:30 or 10:25 , it finds. But I want to make that getting system time and checking that is it between 08:30 and 10:25 or 10:25 and 12:30 . Then I can sythat it is first lesson or it is second lesson . I have also table includes Table_Time column has 5 record like 08:20 , 10:25 , 12:20 so on. Could I use like : select Lesson_Time from mydb.clock where Lesson_Time between (current time)-30 AND (current time)+30 Or can I use between operator between two columns ? Like creating Lesson_Time_Start and Lesson_Time_End and compairing current time like Lesson_Start_Time

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  • Delete data with foreign key in SQL Server table

    - by Andha
    I'm going to delete data in an SQL Server table (parent) which has a relationship with another table (child). I tried the basic Delete query. But it isn't working (and I know it won't). DELETE FROM table WHERE ... It returned following error The DELETE statement conflicted with the REFERENCE constraint ... I need to keep the table's schema. I know that I just need to add some words in the query, I've ever done this before, but I just couldn't recall it.

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  • mysql query for change in values in a logging table

    - by kiasectomondo
    I have a table like this: Index , PersonID , ItemCount , UnixTimeStamp 1 , 1 , 1 , 1296000000 2 , 1 , 2 , 1296000100 3 , 2 , 4 , 1296003230 4 , 2 , 6 , 1296093949 5 , 1 , 0 , 1296093295 Time and index always go up. Its basically a logging table to log the itemcount each time it changes. I get the most recent ItemCount for each Person like this: SELECT * FROM table a INNER JOIN ( SELECT MAX(index) as i FROM table GROUP BY PersonID) b ON a.index = b.i; What I want to do is get get the most recent record for each PersonID that is at least 24 hours older than the most recent record for each Person ID. Then I want to take the difference in ItemCount between these two to get a change in itemcount for each person over the last 24 hours: personID ChangeInItemCountOverAtLeast24Hours 1 3 2 -11 3 6 Im sort of stuck with what to do next. How can I join another itemcount based on latest adjusted timestamp of individual rows?

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  • Blocking row navigation in af:table , synchronize row selection with model in case of validation failure- Oracle ADF by Ashish Awasthi

    - by JuergenKress
    In ADF we often work on editable af:table and when we use af:table to insert ,update or delete data, it is normal to use some validation but problem is when some validation failure occurs on page (in af:table) ,still we can select another row and it shows as currently selected Row this is a bit confusing for user as Row Selection of af:table is not synchronized with model or binding layer See Problem- i have an editable table on page Read the complete article here. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: ADF,Ashish Awasthi,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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  • Hi i have a c programming doubt in the implementation of hash table?

    - by aks
    Hi i have a c programming doubt in the implementation of hash table? I have implemented the hash table for storing some strings? I am having problem while dealing with hash collisons. I am following chaining link-list approach to overcome the same? But, somehow my code is behaving differently. I am not able to debug the same? Can somebody help? This is what i am facing: Say first time, i insert a string called gaur. My hash map calculates the index as 0 and inserts the string successfully. However, when another string whose hash map also when calculates turns out to be 0, my previous value gets overrridden i.e. gaur will be replaced by new string. This is my code: struct list { char *string; struct list *next; }; struct hash_table { int size; /* the size of the table */ struct list **table; /* the table elements */ }; struct hash_table *create_hash_table(int size) { struct hash_table *new_table; int i; if (size<1) return NULL; /* invalid size for table */ /* Attempt to allocate memory for the table structure */ if ((new_table = malloc(sizeof(struct hash_table))) == NULL) { return NULL; } /* Attempt to allocate memory for the table itself */ if ((new_table->table = malloc(sizeof(struct list *) * size)) == NULL) { return NULL; } /* Initialize the elements of the table */ for(i=0; i<size; i++) new_table->table[i] = '\0'; /* Set the table's size */ new_table->size = size; return new_table; } unsigned int hash(struct hash_table *hashtable, char *str) { unsigned int hashval = 0; int i = 0; for(; *str != '\0'; str++) { hashval += str[i]; i++; } return (hashval % hashtable->size); } struct list *lookup_string(struct hash_table *hashtable, char *str) { printf("\n enters in lookup_string \n"); struct list * new_list; unsigned int hashval = hash(hashtable, str); /* Go to the correct list based on the hash value and see if str is * in the list. If it is, return return a pointer to the list element. * If it isn't, the item isn't in the table, so return NULL. */ for(new_list = hashtable->table[hashval]; new_list != NULL;new_list = new_list->next) { if (strcmp(str, new_list->string) == 0) return new_list; } printf("\n returns NULL in lookup_string \n"); return NULL; } int add_string(struct hash_table *hashtable, char *str) { printf("\n enters in add_string \n"); struct list *new_list; struct list *current_list; unsigned int hashval = hash(hashtable, str); printf("\n hashval = %d", hashval); /* Attempt to allocate memory for list */ if ((new_list = malloc(sizeof(struct list))) == NULL) { printf("\n enters here \n"); return 1; } /* Does item already exist? */ current_list = lookup_string(hashtable, str); if (current_list == NULL) { printf("\n DEBUG Purpose \n"); printf("\n NULL \n"); } /* item already exists, don't insert it again. */ if (current_list != NULL) { printf("\n Item already present...\n"); return 2; } /* Insert into list */ printf("\n Inserting...\n"); new_list->string = strdup(str); new_list->next = NULL; //new_list->next = hashtable->table[hashval]; if(hashtable->table[hashval] == NULL) { hashtable->table[hashval] = new_list; } else { struct list * temp_list = hashtable->table[hashval]; while(temp_list->next!=NULL) temp_list = temp_list->next; temp_list->next = new_list; hashtable->table[hashval] = new_list; } return 0; }

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  • EF4 + STE: Reattaching via a WCF Service? Using a new objectcontext each and every time?

    - by Martin
    Hi there, I am planning to use WCF (not ria) in conjunction with Entity Framework 4 and STE (Self tracking entitites). If i understnad this correctly my WCF should return an entity or collection of entities (using LIST for example and not IQueryable) to the client (in my case silverlight) The client then can change the entity or update it. At this point i believe it is self tracking???? This is where i sort of get a bit confused as there are a lot of reported problems with STEs not tracking.. Anyway... Then to update i just need to send back the entity to my WCF service on another method to do the update. I should be creating a new OBJECTCONTEXT everytime? In every method? If i am creaitng a new objectcontext everytime in everymethod on my WCF then don't i need to re-attach the STE to the objectcontext? So basically this alone wouldn't work?? using(var ctx = new MyContext()) { ctx.Orders.ApplyChanges(order); ctx.SaveChanges(); } Or should i be creating the object context once in the constructor of the WCF service so that 1 call and every additional call using the same wcf instance uses the same objectcontext? I could create and destroy the wcf service in each method call from the client - hence creating in effect a new objectcontext each time. I understand that it isn't a good idea to keep the objectcontext alive for very long. Any insight or information would be gratefully appreciated thanks

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  • Easy Update "Table of Contents" feature in Microsoft Word 2007 VS. Microsoft word 2010

    - by xarzu
    I am currently working on a document that was written using Microsoft Word 2007 and I am also using Microsoft Word 2007 to update the document. It is just the way of the workplace I am now in. I have noticed that the feature of adding nested headers ("subheaders" perhaps) does not work the same as I remember it did with Microsoft Word 2010. Since I am not the original author of the document, I am not sure if the table of contents was set up the right way. So my first question is: How do I see if the table of contents was set up properly in Microsoft Word 2007 to allow automatic updates whenever a subheader is added to the text. There seems to be a number of other things going on with the document that do not seem right. But maybe if we fix this problem first the other issues will dissolve or be lessened.

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  • selfextracting archive with 7zip via cmd.exe

    - by creativz
    Hello, I downloaded 7za.exe and did this to compress a file.exe: 7za.rar a -mx9 archive file.exe Now I want to create a selfextracting archive (.exe), so I tried this: 7za.rar a -mx9 -sfx archive file.exe But I get the following error message: can't find specified sfx module Can anyone please tell me how to make a selfextracting .exe with 7zip via cmd.exe? Thanks!

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  • Check if root ca certificate is installed

    - by Zulakis
    We are having a custom CA for our local-domains. The Root CA certificate is installed on all the corporate machines by default, but sometimes it happens that we have someone here who doesn't have it installed. If the user a) accesses our intranet using http or b) accepts the server-certificate I would like to redirect the user to a site which tells it what happened and how they can install the root CA. The only solution I found was the following: <img src="https://the_site/the_image" onerror="redirectToCertPage()"> This is barely a work-around and not really a solution. It can be triggered by other problems then the missing certificate. Are there any better solutions on how to solve this problem?

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  • Is it possible to be a Linux professional studying on your own?

    - by Marc Jr
    I read economics at university(nothing to see with linux, isn't it? :P). I have some basic knowledge about booting process, Linux Kernel compiling from source and stuff like that. But of course I have still much to learn sometimes some errors appears and "voila" I am lost. I had: Ubuntu, Fedora, OpenSuse, Arch.. using Gentoo now. I'd like to know what you linux users, professionals, administrators... would think it is the best way to learn linux in a professional way. Is it worth studying it and passing the LPIC test enough to work in the linux world? or do I need going to IT uni? I've heard LFS is a good way of learning about linux, is that real? I've been thinking about getting to LFS learn about more deeply about the linux process and learning scripts. It is possible to do this way? if anyone has a tip or a good way of doing, maybe someone did it. Any tip is very welcome. Words from a person in love with linux. :D The best, Marc

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  • Microsoft Excel 2010 How to reference a table to another sheet

    - by Shiro
    I am using Excel 2010. I got a sheet name "March" I would like to duplicate it (with reference / link) to another sheet called "Summary" which included January, Feb, and March. In the summary tab I would add another column called "Month" and will duplicate the value "March" or their tab month. I did some research on it, they said copy and paste special with link, but I can't find it. I need to reference the whole table, just in case any change add / remove the row of the table, the summary still will update it. Is there any solution with this? Thanks!

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  • Make mysqldump output USE statements or full table names when dumping a single table with where clause

    - by tobyodavies
    Is it possible to get mysqldump to output USE statements for a single (partial) table dump? I've already got some scripts that I'd like to reuse which run mysqldump with some arguments and apply them to a remote server. However, since I haven't bothered to parse all the arguments to mysqldump, and there is no USE in the dump, the remote server is saying no database selected. I'm a programmer more than anything else, so I can easily use sed to modify the dump before applying it in the worst case, but those scripts won't allow me to do this as I don't have access to the dump between creation and application. EDIT: the ability to output fully qualified table names may also solve my problem

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  • Linksys WRT54G2 not showing connected PC's in DHCP table

    - by Moose
    For some reason all of a sudden my linksys WRT54G2 no longer shows PC's connected in the DHCP table. It was being touchy then all of a sudden they all just disappeared. It showed 2 of the 4 connected then it showed the other 2 then it only showed 1 and then it was showing none. I seem to be having a connection reset every 30-60 minutes also not sure if that is related to the router going bad or if it is just comcast being it's typical crappy self. I have tried to reset my router and my cable modem and both problems still seem to keep happening(no PC's in table and connection reset every 30-60 mins). Now I know the router doesn't store clients after a router reboot but they normally show up within a matter of minutes for me in the past. Before anyone asks yes all devices on the network are using DHCP and not static. Could this be a sign of the router starting to go bad?

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  • Is it possible to be a professional studying on your own?

    - by Marc Jr
    I read economics at university(nothing to see with linux, isn't it? :P). I have some basic knowledge about booting process, Linux Kernel compiling from source and stuff like that. But of course I have still much to learn sometimes some errors appears and "voila" I am lost. I had: Ubuntu, Fedora, OpenSuse, Arch.. using Gentoo now. I'd like to know what you linux users, professionals, administrators... would think it is the best way to learn linux in a professional way. Is it worth studying it and passing the LPIC test enough to work in the linux world? or do I need going to IT uni? I've heard LFS is a good way of learning about linux, is that real? I've been thinking about getting to LFS learn about more deeply about the linux process and learning scripts. It is possible to do this way? if anyone has a tip or a good way of doing, maybe someone did it. Any tip is very welcome. Words from a person in love with linux. :D The best, Marc

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  • Which Single Source Publishing tools and strategies are available?

    - by Another Registered User
    I'm about to write a 1000-Pages Documentation about a huge programming framework. The goal is to bring this documentation online into an web platform, so that online users can search through it and read it online. At the same time, the text has to be made public in PDF format for download. And at the same time, the whole thing needs to go into a printed book as well (print on demand, they want a giant PDF file with the whole book). The PDF files: The whole content is divided into several chapters. Every chapter will be available as a standalone PDF eBook. And finally, all chapters will be available in one huge printed book. Is LaTeX capable for something like that? Can it be used for Single Source Publishing? Or would I have to take a look at other technologies like DocBook, etc.?

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  • “Disk /dev/xvda1 doesn't contain a valid partition table”

    - by Simpanoz
    Iam newbie to EC2 and Ubuntu 11 (EC2 Free tier Ubuntu). I have made following commands. sudo mkfs -t ext4 /dev/xvdf6 sudo mkdir /db sudo vim /etc/fstab /dev/xvdf6 /db ext4 noatime,noexec,nodiratime 0 0 sudo mount /dev/xvdf6 /db fdisk -l I got following output. Can some one guide me what I am doing wrong and how it can be rectified. Disk /dev/xvda1: 8589 MB, 8589934592 bytes 255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/xvda1 doesn't contain a valid partition table Disk /dev/xvdf6: 6442 MB, 6442450944 bytes 255 heads, 63 sectors/track, 783 cylinders, total 12582912 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/xvdf6 doesn't contain a valid partition table.

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  • Partition table is corrupt

    - by Tim
    I have a corrupt the partition table on the laptop that is running Ubunutu 10.4. Before the partition table was corrupt I had the following partitions: 2 primary partitions: 1st - NTFS 2nd - Extended 4 logical partitons that are built within 2nd extended: 1st NTFS (68 Gib) 2nd Linux (19 Gib) 3rd Swap (1.4 Gib) 4th Linux (24 Gib) The physical order of these partitions was the following: ( 4th Linux ) - ( 1st NTFS ) - ( 2nd Linux ) - ( 3rd Swap ) The logical order of the partition was different: ( 1st NTFS ) - ( 2nd Linux ) - ( 3rd Swap ) ( 4th Linux ) NTFS partition was big and it resided between 2 Linux partitions, neither of these partitions had enough space to install Oracle 11g for my project with prof. Gamper and Markus Innerebner. Therefore, I decided to a) either move the NTFS partion to the left or b) remove it completely and extend partition where Linux resides. As I tool I have chosen GParted. But unfortunately it was not able to move the partition because he found that in NTFS partition there are some blocks that are referenced multiple times. Also it was not able to remove the partition neither, because in this case the partitions that follow it ( 2nd Linux ) - ( 3rd Swap ) have to be in his opinion also removed, because the organization of extended partition is a linked list. Since GParted was not able to do such thing I was trying to find another tool. I found diskdrake tool on PSLinuxOS distribution of linux. That tool silently deleted ( 1st NTFS ) partition and I thought that everything was fine. But diskdrake has damaged the partition in a way that I am not able either to boot from the hard disk nor to see the partitions with GParted and even with diskdrake itself! Fortunately I have a live CD of Ubuntu 8.10 and I am able to boot and see hard disk. I have 2 ideas how I can solve the problem: 1) Manually change disk partitions and point them to the correct partitions. 2) Create partition table with GParted that as much as possible is the same with the previous one I find the 2nd approach less time consuming but some data will be lost because of it is not possible to place borders of the partitions exactly how it was before. And moreover I am not sure if such approach would work, for example, if the OS is able to locate files after repartitioning. I feel like that it will but not 100% sure. Are there some ideas how the problem may be solved?

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  • VMXNET3 nic loses the ability to update ARP table after N hours

    - by Peter
    I have a fedora 18 VM that stops updating the arp table on eth1 after running for a number of hours to days. There are other VMs on the same hypervisor that can access all of the same networks without issue. A tcpdump of the offending NIC shows only ARP broadcasts but no responses. None of the other VMs on the vDS see the ARP broadcasts from the offending NIC. The only way I can currently solve the problem is to reboot the VM and then everything works for a while. I've tried changing the port on the vDS and even flipping the network configurations after I lose eth1's ARP table, but the ARP problem follows eth1 but I can access the machines that were originally on eth1. If I statically add the arp entries for machines on the same subnet I have no problems with connectivity. The Hypervisor is an HP BL49X series with flex-10 network modules. Has anyone seen anything like this before?

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  • Table modifications while running db replication (MS SQL 2008)

    - by typemismatch
    I'm running SQL Server 2008 Std with a database that is being published in a "Transactional Publication" to a single subscriber. We are unable to make any changes to the tables on the publisher without getting the "cannot modify table because it is published for replication". This seems odd because schema changes (or scripts run to do this) should be pushed to the subscriber. We currently have to drop the entire publication system to make table changes. What am I missing? There must be a way to update the publisher tables? thanks!

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  • Adding FK Index to existing table in Merge Replication Topology

    - by Refracted Paladin
    I have a table that has grown quite large that we are replicating to about 120 subscribers. A FK on that table does not have an index and when I ran an Execution Plan on a query that was causing issues it had this to say -- /* Missing Index Details from CaseNotesTimeoutQuerys.sql - mylocal\sqlexpress.MATRIX (WWCARES\pschaller (54)) The Query Processor estimates that implementing the following index could improve the query cost by 99.5556%. */ /* USE [MATRIX] GO CREATE NONCLUSTERED INDEX [<Name of Missing Index, sysname,>] ON [dbo].[tblCaseNotes] ([PersonID]) GO */ I would like to add this but I am afraid it will FORCE a reinitialization. Can anyone verify or validate my concerns? Does it even work that way or would I need to run the script on each subscriber? Any insight would be appreciated.

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  • What is the best bang for buck desktop CPU

    - by dev5
    What is the best bang for buck desktop cpu available at the moment. AMD or Intel are both OK. Although slight bias to AMD since i prefer their motherboards. It's for an all round machine, i do a bit of everything, from gaming to web development.

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  • Is it still cheaper to build your own PC?

    - by Jeff Yates
    With many companies offering build-to-order PCs, where they can source components at bulk purchase prices, is there any value in building your own PC. Is it still a good option for everyone or is it only cost-effective for those building fringe equipment like high spec gaming platforms? Don't forget to factor in the time and effort you spend building and configuring the machine. I know that it is often worthwhile as it builds understanding of your machine, gets you exactly what you want, etc., but is it still good for your wallet or would you be better off paying someone else to do it and spend more time doing something else?

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  • How to make all table borders invisible in MS Word after copying from HTML

    - by TheBW
    I am in a situation where I need to make a HTML report into a word report with nothing more that Ctrl+C or opening it with Word. I end up with a lot of nested tables. Problem lies in the fact that css formats the table in HTML while in Word document they are left with horrible looking borders, that need to be invisible. It would take extensive amounts of time to make each tables borders invisible. Is there a way to make all borders of every table in document invisible?

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