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Comments:
<0> there being more than one.
<1> so there is the posix standard regular expressions, GNU extensions to those then perl extensions on top of those
<1> as seen in the sed man page
<2> Sneaky_Bastard: can you paste any definition of 'regular expression' that supports your direction? :)
<2> firewire: ah, thanks, those are PSRE instead or PCRE :)
<1> I don't have a fancy college ejumakation or anything like that
<3> hey folks
<0> you could use "Mastering Regular Expressions" by O'Rielly
<1> I own it :)
<4> ohh!
<0> let's see if they actually bother to define it
<4> firewire: how it it?
<1> Bearcat very nice
<4> firewire: awesome! it might even make postfix usable :P
<4> firewire: err..procmail
<1> I recommend it for anyone that uses *nix
<1> vim/grep/sed/pcre/perl anything really
<0> the automata book talks about how finite automata are used to actually do the regular expression match
<1> Sneaky_Bastard what's the difference between an expression and a regular expression?
<0> and in other places it is explained how the regular expression is compiled into a finite automata
<4> firewire: you know one of my jobs used to be to migrate databases to acccess all day (*shudder*). I would have given anything to have the power of regex at that point!
<2> Sneaky_Bastard: 'compiled into', not 'compiled from'
<1> Bearcat I feel for you man
<2> Sneaky_Bastard: the idea that 'regular expression' can be 'compiled into automata' doesn't mean that everything that is 'compiled into automata' is regular expression.
<2> \o.
<1> I do a lot of random one off parsing tasks
<4> firewire: this company was trying to use M$ Access for 500 mb databases!
<0> straw man, you misrepresent my words as something else which is obviously true, but not anything I said.
<2> hehe, whole mediawiki parser is gigantic set of regexps ;-)
<1> "Bears eat berries, people eat berries, therefore people are bears"
<1> something like that
<0> an "expression" is just a string of symbols in the context in question
<2> Sneaky_Bastard: you were talking about 'compiling into regular expression' and that all index walks and partial matching needs regular expression.
<2> Sneaky_Bastard: when does it become regular?
<2> ;-)
<4> dammit: give it fiber
<0> a "regular expression" is an entire set of "expressions" that fulfill a finite grammar
<2> so why partial matching has to fulfill a finite grammar?
<2> it's fun!
<1> I tink Sneaky_Bastard has taken too many comp sci cl***es
<1> *think
<0> because it's a set membership test, that's why
<0> whether you believe it or not
<0> the "set of all strings that begin with string <x>"
<0> candidate strings then must be checked for set membership
<2> 'can be written _as_ regular expression'
<0> by whatever the test being used happens to be
<5> hello, i need a software for windows and debian with what i can manage database directly from windows (with a emulator) (not on web) - Debian Stable.
<2> well, whatever :)
<6> !tell tziku about gui tools
<0> which, as I said before already, can be highly optimized for partial string match
<7> But I don't know a thing about that.
<6> !tell tziku about tools
<7> But I don't know a thing about that.
<6> !tell yourself about WHAT THE ****, SQL YOU BITCH
<7> But I don't know a thing about that.
<2> litheum: what is regular expression, child?
<6> ah, fair enough.
<5> litheum bot dos't work :( he tell me nothing :D
<6> dammit: voodoo
<2> um
<2> see, Sneaky_Bastard, you talk about voodoo.
<4> i used to have a voodo card
<0> after a while, it gets distressing trying to talk to people who work with computer languages, but never bother to learn the underlying theory at all
<1> i used to play team fortress on a voodoo
<6> good lord, why do punch down tools cost so much
<1> Sneaky_Bastard because 99% of the time we don't need it in real life
<0> 99% of the time you don't know you need it, maybe would be more truthful
<6> Sneaky_Bastard: who the hell has time to learn all the theory?
<0> but the question that was originally asked involved knowing how the **** works to answre it.
<6> that's ludicrous
<1> I've been doing pretty well without it so far
<0> but hey, **** me for trying.
<0> complete waste of my time, apparently.
<2> Sneaky_Bastard: well, do you need to know some uber-automata for algorithms?
<1> I think you're late for cl***
<1> you better not be late or else all those student loans will be for nothing
<6> lol
<1> enjoy talking about "theory" with your buddy behind the register while you cook fries at mcdonalds
<1> the rest of us have work to do
<0> firewire: you are now conducting an "ad-hominem" attack, by attempting to portray me as a clueless academic and not somebody who uses this crap in in the Real World(tm)
<0> so **** off and die.
<6> hehe
<0> there was a specific question that required some theoretical knowledge to answer correctly
<1> just saying what someone is doing isn't really a come back
<8> OENOES
<8> "scare quotes"
<0> or I would not have raised the issue.
<8> HE R WIN!
<4> ok...*cracks his paws* i need a litle help figuring out where mysql is using up all my system resources. I have my config file, trace logs, gdm logs and all that posted. However, i'm not sure what i'm looking at. I'd *love* some help. Besides, i'm friendly and willing to look up stuff myself.
<0> so get off my back, ***hole.
<1> Bearcat which resources?
<1> cpu i/o memory?
<4> firewire: user. It makes user % go between 90 - 99 % slowing my system to a crawl untill i can kill mysql
<1> which queries are running while it's doing that?
<2> Bearcat: any running threads?
<4> loading up an app that uses mysql is fine, but closing the app does this.
<4> loook at http://www.feline-soul.com/files/mysql/
<4> i have a gdb and a trace dump in there.
<4> these are not innodb databases.
<4> even if i sign in with a errant p***word it exibits this behavior
<1> 16k key buffer is a bit small
<1> Bearcat enable skip-innodb if you aren't using innodb
<2> Bearcat: gdb shows nothing there
<4> firewire: i've tried that to no avail
<1> you should do it anyway
<4> might this just be because some of my memory settings are too low?
<2> nope
<2> Bearcat: might be threading library issues.
<4> so this isn't a config issue?
<2> what's OS?
<4> linux
<2> version?
<4> 2.6.15 on an amd 64
<2> um
<1> did you compile mysql yourself?
<4> yes. Well, my package manager did.
<2> Bearcat: can you try binaries from mysql.com?
<2> Bearcat: some ubuntu or whatever?
<4> the logs are in that directory
<1> gentoo?
<2> compressed!
<2> I'm too lazy to download/decompress.
<1> Bearcat dammit is right, you should try the binaries from mysql.com
<9> someone there?
<2> =)
<4> dammit: i'm betting that the binaries will work. However, i'd like to fix the problem in case someone else runs into this. Not to mention that a binary install will not be tracked properly
<9> how do i return subquerys as some fake column?
<2> Bearcat: are you ready to debug threading library issues?
<2> if you do though, it'd be amazing.
<4> dammit: well, let me ask you this. I'm not a c programmer yet. Is this likely a problem with the mysql app or an issue on my system?
<9> is there something like select foo from bar as something;?
<2> s-ndh-c: sure there is
<10> select foo as something from bar;
<2> Bearcat: your system
<9> ah ok
<9> :p
<2> select foo as something from bar as something where something like something;
<4> dammit: so it's probably a library incompatability issue.
<2> \o/
<10> select foobarlicious as f, count(*) as tehcount from bar;
<9> hehe
<2> Bearcat: it's always difficult to say, is it threading library bug, or incompatibility in mysql code.
<9> how can i do something like that on show tables from blub;?
<2> no, you can't
<4> dammit: or it could be a 64-bit problem...*sigh*
<9> i would need to have a column name
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