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  • Serialize checkbox array, also get checkboxes with off-value

    - by guzh
    Hi, I was wondering if this is possible. The serialize-string will be inserted in a mySQL-database, so it would be fine if all checkboxes would be inserted and not only the ones that is ticked(on). it's possible to make on column in the database for each of the checkboxes, and use this if/else-statement: if(isset($_GET['checkbox'])) { // It's checked! } else { // not checked! } but its a bit unappropriate...

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  • Gnuplot - splot matrix csv data

    - by Jakub Czaplicki
    How can I plot (a 3D plot) a matrix in Gnuplot having such data structure. I cannot find a way to use the first row and column as a x and y ticks (or to ignore them) ,5,6,7,8 1,-6.20,-6.35,-6.59,-6.02 2,-6.39,-6.52,-6.31,-6.00 3,-6.36,-6.48,-6.15,-5.90 4,-5.79,-5.91,-5.87,-5.46 Is the splot 'data.csv' matrix the correct parameter to use ?

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  • what does 'legend' mean in sql?

    - by every_answer_gets_a_point
    im doing some practice sql problems one of the questions is: Prepare a shipping statement for customer 'C001' it should show the date, the legend 'Delivery' and the total value of the products shipped on each day. 'delivery' is not a table nor is it a column in any table. what does legend mean??

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  • batch update mysql table

    - by Yang
    I have a table with a column called time, "HH:MM:SS". How can I do a batch update so that the value increment by 1 hour? Is it something like: update <table_name> set <time_column> = <time_column> + 3600 where ...

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  • sort arrow is always showing up once sorting is used

    - by kksachin
    we have several pages as tabs where datatable is used in most of the pages.when we sort on a particular coulmn and exit the page and re enter this page the arrow appears(up /down based on how we left) Although the data is not sorted in the direction the arrow shows.i have set preserveSort and preserveDataMode to false. The arrow is set to true in the column's t:commandSortHeader tag in all the pages. is this a bug or am i missing any setting?I have tried to set forceId to false in t:commandSortHeader but of now use.

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  • Is it possible to plot a single density over a discrete variable?

    - by mattrepl
    The x-axis is time broken up into time intervals. There is an interval column in the data frame that specifies the time for each row. Plotting a histogram or line using geom_histogram and geom_freqpoly works great, but I'd like to use geom_density to get a filled area. Perhaps there is a better way to achieve this. Right now, if I use geom_density, curves are created for each discrete factor level instead of smoothing over all of them.

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  • postgresql drop table

    - by Russell
    I have two tables (tbl and tbl_new) that both use the same sequence (tbl_id_seq). I'd like to drop one of those tables. On tbl, I've removed the modifier "not null default nextval('tbl_id_seq'::regclass)" but that modifier remains on tbl_new. I'm getting the following error: ERROR: cannot drop table tbl because other objects depend on it DETAIL: default for table tbl_new column id depends on sequence tbl_id_seq After reviewing http://www.postgresql.org/docs/9.1/static/sql-droptable.html It looks like there is only CASCADE and RESTRICT as options.

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  • Allowing access to company files accross the internet

    - by Renaud Bompuis
    The premise I've been tasked with finding a solution to the following scenario: our main file server is a Linux machine. on the LAN, users simply access the files using SMB. each user has an account on the file server and his/her own access rights. user accounts are simple passwd/group security accounts, not NIS/LDAP. The problem We want to give users (or at least some of them, say if they belong to a particular group) the ability to access the files from the Internet while travelling. Ideally I'd like a seamless solution. Maybe something that allows the user to access a mapped drive would be ideal. A web-oriented solution is also good but it should present files in a way that is familiar to users, in an explorer-like fashion for instance. Security is a must of course, and users would be expected to log-in. The connection to the server should also be encrypted. Anyone has some pointers to neat solutions? Any experiences? Edit The client machines are Windows only.

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  • Determine stale data

    - by Andrei
    Say I have a file of this format 12:04:21 .3 12:10:21 1.3 12:13:21 1.4 12:14:21 1.3 ..and so on I want to find repeated numbers in the second column for, say, 10 consequent timestamps, thereby finding staleness. and I want to output the beginning and and end of the stale timestamp range Can someone help me come up with it? You can use awk, bash Thanks

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  • Crystal reports CSV incorrect generation

    - by yauhen
    When setting ExportFormatType.CharacterSeparatedValues crystal report generates every row of data prefixed with column names (Report Headers). Why it does this? How it could be fixed? Usually it is preferred to have single header. For excel export type - generated report looks ok (only single header for all rows). I am using crystal reports 11.5.3700.0. Visual studio 2008, .net 3.5 sp1

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  • How to SELECT the last 10 rows of an SQL table which has no ID field?

    - by Edward Tanguay
    I have an MySQL table with 25000 rows. This is an imported CSV file so I want to look at the last ten rows to make sure it imported everything. However, since there is no ID column, I can't say: SELECT * FROM big_table ORDER BY id DESC What SQL statement would show me the last 10 rows of this table? The structure of the table is simply this: columns are: A, B, C, D, ..., AA, AB, AC, ... (like Excel) all fields are of type TEXT

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  • What's making my page extend slightly beyond the viewport? [CSS]

    - by Jack W-H
    Basically I'm a tad confused. You'll see at http://furnace.howcode.com , in the second column, the bottom scrollbar button is extended slightly beyond the end of the viewport. I'm pretty confused as I've been examining the CSS and can't find anything that's causing this. Can you have a look? It's probably something simple that I've just missed! :) Screenshot:

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  • Ruby: Dynamically calling available methods raising undefined method (metaprogramming)

    - by user94154
    I have an Activerecord object called Foo: Foo.attribute_names.each do |attribute| puts Foo.find(:all)[0].method(attribute.to_sym).call end Here I'm calling all attributes on this model (ie, querying for each column value). However, sometimes, I'll get an undefined method error. How can ActiveRecord::Base#attribute_names return an attribute name that when converted into its own method call, raises an undefined method error? Thank

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  • ASP.NET site errors output nothing on the page.

    - by d1k_is
    OK, i have been doing some work modding a pre-compiled ASP.NET application (VB codebehind) but i have come across something i have never seen before. When ever theres an error on the loading of a page, the page outputs nothing (no error message, no error message, nothing at all) firefox displays this error: XML Parsing Error: no element found Location: http://site.local/Checkout.aspx Line Number 1, Column 1: Because there is no html output. Is there some sort of setting that im missing that makes IIS/ASP.NET function like this?

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  • PostgreSQL: Why does this simple query not use the index?

    - by David
    I have a table t with a column c, which is an int and has a btree index on it. Why does the following query not utilize this index? explain select c from t group by c; The result I get is: HashAggregate (cost=1005817.55..1005817.71 rows=16 width=4) -> Seq Scan on t (cost=0.00..946059.84 rows=23903084 width=4) My understanding of indexes is limited, but I thought such queries were the purpose of indexes.

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  • solr range query errors

    - by mquinsland
    http://localhost:8983/solr/select?wt=json&q=lat:[35%20to%2038] results in **org.apache.lucene.queryParser.ParseException: Cannot parse 'lat:[35 to 38]': Encountered " "38 "" at line 1, column 11. Was expecting: "]" This is a pretty basic range query and this error will prevent us from using SOLR for our projects

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  • MySQL More Tables or More Rows

    - by Pez Cuckow
    I am working on a game that I am going to open to the public to have on their game. The game stores lots of information (about 300 rows) per website and spends a lot of time updating values within this MySQL database. Is it better (faster/efficient) to add a new table for every website or to just have 1000's of rows in one table and add a column "website_id" or similar?

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  • Unique Constraint At Data Level in GAE

    - by Ngu Soon Hui
    It seems that the unique constraint is not natively supported in GAE, although one can enforce unique check before putting an object to store. But that was in January 2009, what about now? Can I specify unique constraint on a column during schema creation? i.e. class Account(db.Model): name = db.StringProperty() email = db.StringProperty() as unique # something like this @classmethod def create(cls, name, email): a = Account(name=name, email=email) a.put() return a

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