2009-08-12 Hide Zen home Pgsql GiST GIN SP-GiST Tsearch2 SAI RVO SAI CAS SOA Supernovae TODO HomePage Astronet Google Rambler Yandex Oddmuse E-R-E dict Index edit We introduce phrase operator ?[n], or phrase conjuction operator, which is similar logical conjuction operator ( AND, &), but preserve order of operands (non-commutative) and constraint distance between them (<=n) Logical conjuction operator (AND, &) is associative , commmutative , distributive , idempotent . In set theory intersection operator is an example of logical conjunction operator. The ? operator is non-commutative , so 'A ? B' ≠ 'B ? A' The ? operator is non-associative ( left-associative ) and evaluates from left to right. =# select '1 ? 2 ? 3'::tsquery = '(1 ? 2) ? 3'::tsquery; ?column? ---------- t but =# select '1 ? 2 ? 3'::tsquery = '1 ? (2 ? 3)'::tsquery; ?column? ---------- f Function *phraseto_...
Navigation Brand and toggle get grouped for better mobile display Toggle navigation PostgreSQL Addict Collect the nav links, forms, and other content for toggling About me GitHub Google+ Twitter Flickr RSS /.navbar-collapse /.container Page Content main content This is the post I promised last week, explaining a few common issues with memory contexts. The issues mostly lead to excessive overhead, i.e. excessive usage of resources - usually memory. And that's exactly what this post is about, so whenever I say "overhead" you can read "excessive memory usage." I will also try to give advices on how to avoid those issues or minimize the impact. As I briefly mentioned when explaining allocation set internals , there are three main sources of overhead: chunk headers - for large chunks, this gets negligible unused space (because of 2^N chunks) - ex...
Search Documentation: Home → Documentation → Manuals → PostgreSQL 9.4 This page in other versions: 9.0 / 9.1 / 9.2 / 9.3 / 9.4 | Development versions: devel | Unsupported versions: 8.2 / 8.3 / 8.4 PostgreSQL 9.4.0 Documentation Prev Up Appendix I. The Source Code Repository Next I.1. Getting The Source via Git With Git you will make a copy of the entire code repository on your local machine, so you will have access to all history and branches offline. This is the fastest and most flexible way to develop or test patches. Git You will need an installed version of Git , which you can get from http://git-scm.com . Many systems already have a recent version of Git installed by default, or available in their package distribution system. To begin using the Git repository, make a clone of the official mirr...
Jump to: navigation , search start content 1 Development Process 2 Administration 2.1 Configuration files 2.2 Tablespaces 2.3 Statistics Collector 2.4 SSL 2.5 Point-In-Time Recovery (PITR) 2.6 Standby server mode 3 Data Types 3.1 Domains 3.2 Dates and Times 3.3 Arrays 3.4 Binary Data 3.5 MONEY Data Type 3.6 Text Search 3.7 XML 4 Functions 4.1 Character Formatting 5 Multi-Language Support 6 Views and Rules 7 SQL Commands 7.1 CREATE 7.2 UPDATE 7.3 ALTER 7.4 CLUSTER 7.5 COPY 7.6 GRANT/REVOKE 7.7 DECLARE CURSOR 7.8 INSERT 7.9 SHOW/SET 7.10 ANALYZE 7.11 Window Functions 8 Integrity Constraints 8.1 Keys 8.2 Referential Integrity 8.3 Check Constraints 9 Server-Side Languages 9.1 SQL-Language Functions 9.2 PL/pgSQL 9.3 PL/Perl 9.4 PL/Python 9.5 PL/Tcl 10 Clients 10.1 pg_ctl 10.2 psql 10.3 pg_dump / pg_restore 10.4 ecpg 1...
Jump to: navigation , search start content 1 Development Process 2 Administration 2.1 Configuration files 2.2 Tablespaces 2.3 Statistics Collector 2.4 SSL 2.5 Point-In-Time Recovery (PITR) 2.6 Standby server mode 3 Data Types 3.1 Domains 3.2 Dates and Times 3.3 Arrays 3.4 Binary Data 3.5 MONEY Data Type 3.6 Text Search 3.7 XML 4 Functions 4.1 Character Formatting 5 Multi-Language Support 6 Views and Rules 7 SQL Commands 7.1 CREATE 7.2 UPDATE 7.3 ALTER 7.4 CLUSTER 7.5 COPY 7.6 GRANT/REVOKE 7.7 DECLARE CURSOR 7.8 INSERT 7.9 SHOW/SET 7.10 ANALYZE 7.11 Window Functions 8 Integrity Constraints 8.1 Keys 8.2 Referential Integrity 8.3 Check Constraints 9 Server-Side Languages 9.1 SQL-Language Functions 9.2 PL/pgSQL 9.3 PL/Perl 9.4 PL/Python 9.5 PL/Tcl 10 Clients 10.1 pg_ctl 10.2 psql 10.3 pg_dump / pg_restore 10.4 ecpg 1...
current community chat blog Stack Overflow Meta Stack Overflow Stack Overflow Careers Sign up or log in to customize your list. more stack exchange communities Stack Exchange sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site stack overflow careers Stack Overflow Questions Tags Users Badges Unanswered Ask Question Take the 2-minute tour × Stack Overflow is a question and answer site for professional and enthusiast programmers. It's 100% free, no registration required. What does brk( ) system call do? up vote 61 down vote favorite 40 According to Linux programmers manual: "brk() and sbrk() change the location of the ...
Sign up for a GitHub account Sign in All Gists lykkin / gist:9c5e50424d5156e6cedc Created January 08, 2015 Code Revisions 1 /.sunken-menu-group /.sunken-menu-contents Embed HTTPS SSH You can clone with HTTPS or SSH . Download Gist /.only-with-full-nav slooooooow View gist:9c5e50424d5156e6cedc gistfile1.js Raw File suppressed. Click to show. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 asyncMap = function ( fn , list , callback ){ var counter = 0 ; var result = list. slice (); list.forEach( function ( elem , index ){ setTimeout ( function (){ if ( ++ counter === result. length ){ callback(result); } result[index] = fn(elem); }, 0 ) }); } syncMap = function ( fn ...
Sign up for a GitHub account Sign in All Gists anonymous / gist:02867c3bbd44d99cd688 Created January 08, 2015 Code Revisions 1 /.sunken-menu-group /.sunken-menu-contents Embed HTTPS SSH You can clone with HTTPS or SSH . Download Gist /.only-with-full-nav sloooooooooooow View gist:02867c3bbd44d99cd688 gistfile1.txt Raw File suppressed. Click to show. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 asyncMap = function(fn, list, callback){ var counter = 0; var result = list.slice(); list.forEach(function(elem, index){ setTimeout(function(){ if(++counter === result.length){ callback(result); } result[index] = fn(elem); }, 0) }); } syncMap = function(fn, list, callback){ var resul...
Sign up for a GitHub account Sign in All Gists lykkin / gist:32537cca0ed8dcb6058b Created January 07, 2015 Code Revisions 1 /.sunken-menu-group /.sunken-menu-contents Embed HTTPS SSH You can clone with HTTPS or SSH . Download Gist /.only-with-full-nav more language stuff View gist:32537cca0ed8dcb6058b gistfile1.txt Raw File suppressed. Click to show. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 data BExp = TRUE | FALSE | AND BExp BExp | OR BExp BExp | NOT BExp | QUANT QExp beval :: BExp -> Bool beval TRUE = True beva...
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http://courses.csail.mit.edu/6.854/current/Handouts/ps7.html <iframe style="float:right" frameborder="0" src="http://calendar.live.com/calendar/badgeif.aspx?Embedded=true&mkt=en-us&w=w&h=mt&user=cid-0b7d02bdf5e5824c&cal=6.854" width="192" height="560"></iframe> Lecture: Monday, Wednesday, and Friday 2:30-4 in 35-225 . Units: 5-0-7 Graduate H-level Professor: David Karger karger at mit edu Office hours: Arrange by email. In Building 32 , Room G592 TA: Will Hasenplaugh whasenpl at mit.edu Office hours: TBA Georgios Vlachos gvlachos at mit.edu Office hours: TBA Please come back frequently to check the office hour updates. Course assistant: Rebecca Yadegar ryadegar at csail.mit.edu Tere may be optional lectures on 12/1, 12/3, and 12/110. Please fill out this survey to help me choose optional lecture topics. There will be a graded in-class assignment on...
Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Star 5,930 Fork 555 prakhar1989 / awesome-courses /.container /.repohead Code Issues Pull Requests Wiki Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar List of awesome university courses for learning Computer Science! 122 commits 1 branch 0 releases 30 contributors branch: master Switch branches/tags /.select-menu-header Branches Tags /.select-menu-tabs /.select-menu-filters master /.select-menu-item Nothing to show /.select-menu-list Nothing to show /.select-menu-list /.select-menu-modal /.select-menu-modal-holder /.select-menu awesome-courses / ...
CentralNotice Prüfer sequence From Wikipedia, the free encyclopedia Jump to: navigation , search In combinatorial mathematics , the Prüfer sequence (also Prüfer code or Prüfer numbers ) of a labeled tree is a unique sequence associated with the tree. The sequence for a tree on n vertices has length n − 2, and can be generated by a simple iterative algorithm. Prüfer sequences were first used by Heinz Prüfer to prove Cayley's formula in 1918. [ 1 ] 1 Algorithm to convert a tree into a Prüfer sequence 1.1 Example 2 Algorithm to convert a Prüfer sequence into a tree 3 Cayley's formula 4 Other applications 5 References 6 External links Algorithm to convert a tree into a Prüfer sequence [ edit ] One can generate a labeled tree's Prüfer sequence by iteratively removing vertices from the tree until only two vertices remain. Specifically, consider a labeled tr...
Toggle navigation EATERNET About Multnomah County, Oregon USA 8733 SE Division Ste 101 Portland, OR 97266 Food-contact surfaces of equipment and utensils are not sanitized after cleaning. Chlorine empty in bar glass washer. Ready-to-eat food is not properly date-marked. Many foods not dated at beginnig of inspection including fried breaded items, baked items in pans, etc. Poisonous or toxic materials are not properly separated or located. Cases of butane cans on shelving over packaged foods in shipping container on back porch. The wash compartment of the sink or mechanical dishwasher does not contain a wash solution with a cleaning agent. Bar glass washer detergent dispenser completely dry. Lights are not properly shielded. Unsheilded lights near to walkin meat cooler. Lighting is not adequate. No lighting in shipping container store room — provi...