POSTGRESQL is an open-source, full-featured relational database. This
presentation gives an overview of the shared memory structures used by
Postgres.
SQL Query. SELECT firstname. FROM friend. WHERE age = 33;. 2 / 72 .... DEBUG: plan: { SEQSCAN :startup_cost 0.00 :total_
Multiversion Concurrency Control (MVCC) allows Postgres to ... heap page information and pg_freespacemap was installed t
journal homepage: www.elsevier.com/locate/suronc. Surgical .... cation of one's own previously published work.'' [20]. .... Use the study design as appropriate to your research question and apply the traditional evidence hierarchy: Level of ...
POSTGRESQL is an open-source, full-featured relational database. This
presentation gives an overview of the Postgres 9.3 release. Creative Commons ...
Database Hardware. Selection Guidelines. BRUCE MOMJIAN. February, 2013.
Database servers have hardware requirements different from other infrastructure
...
Explaining the Postgres Query Optimizer. BRUCE MOMJIAN. January, 2012. The
optimizer is the "brain" of the database, interpreting SQL queries and ...
when you can and use them properly when you have to. Joe Celko, SQL for
Smarties: Advanced SQL Programming. NULLs Make Things Easier? 8 / 41 ...
Major Features: Postgres 10. BRUCE MOMJIAN. POSTGRESQL is an open-source, full-featured relational database. This presen
How to Get an Article Accepted at American. Anthropologist (or Anywhere). My tenure as Editor-in-Chief of American Anthropologist be- gan relatively recently ...
Learn what you need to do in high school and on your own time to make a college desire you as a student at their institu
COURTESY OF WHOLE FOODS MARKET. WINTER 2012 MIT SLOAN MANAGEMENT REVIEW 61. COMPANIES SMALL AND LARGE have taken to using ...
Special Olympics. FIT 5 Guide. Athletes want to perform their best at every competition. You can do this by being fit. F
Best Buy and CVS), restaurants (such as McDonald's, Pizza Hut and Starbucks) ... (such as Sony, Nokia and Samsung), luxury goods (such as Gucci), consumer.
Have you ever published any paper in IEEE ... author, how many papers have
you published in ... Letters to the Editor describing the results of research briefly.
factor in this fact â research on multi-agent systems profiles itself as an isolated community and as such may create artificial thresholds to convince mainstream.
2007 Future of Software Engineering. IEEE Computer Society, 2007. [5] H. V. Brussel, J. Wyns, P. Valckenaers, L. Bongaerts, and P. Peeters. Reference.
find you online, to research you, and to decide if they trust you. A single online search can generate millions of websi
In computer science, imperative programming is a programming paradigm ... Declarative Programming Languages ..... INSERT
HOW. 24 BRANDS. GOT TO THEIR NEXT. The Business Brand Experts. REC. Page 3. BEFORE. Page 4. Solving it forwardâ¢. BEFOR
How to Get Your PostgreSQL Patch Accepted - Bruce Momjian
Know the Community Values: Is it This? http://www.friedmanarchives.com. How to
Get Your PostgreSQL, Patch Accepted 2 / 29 ...
How to Get Your PostgreSQL Patch Accepted BRUCE MOMJIAN, ENTERPRISEDB TOM LANE, RED HAT
Developing a patch for the POSTGRESQL project is a fairly complex process, and success is not guaranteed. This talk will suggest many ways to improve your chances of submitting a successful patch to the PostgreSQL community. Creative Commons Attribution License http://momjian.us/presentations Last updated: January, 2017 1 / 29
Know the Community Values: Is it This?
http://www.friedmanarchives.com
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Or This?
The PostgreSQL codebase is 20+ years old, and is built expecting another twenty. Code designed for a long life-cycle has more stringent requirements.
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Start Simple
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Gain Experience Before Attempting Complex Tasks
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Don’t Start Here
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Everyone Is Watching
Coding in public can be uncomfortable.
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Be Prepared to be Humbled
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Sometimes You Have to Do it Over
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Get Agreement
Don’t Isolate Yourself
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Design the Interface First
Define the new behavior, and get community agreement. LG Corp.
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Interface Details
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Will the user interact with this new feature? If so, how?
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What is the syntax?
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What is the exact semantics/behavior?
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Are there any backward compatibility issues?
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Get community buy-in at this level of detail before you start coding.
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Implementation Mechanics Second
How will the new behavior be implemented?
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Implementation Details
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What subsystems and C files will be modified?
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How does it interact with other database features?
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How will error conditions be handled?
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Are there any system catalog changes?
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Are there any dump/restore issues? If so, fix pg_dump.
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Does psql need to be modified?
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Formatting Matters
main(int c,char**v){return!m(v[1],v[2]);}m(char*s,char*t) {return*t-42?*s?63==*t|*s==*t&&m(s+1,t+1):!*t:m(s,t+1)|| *s&&m(s+1,t);} The International Obfuscated C Code Contest
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Formatting Details
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Four-space tabs
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BSD brace style
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Pgindent cures some ills, but not all
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Mimic surrounding code
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Naming Matters
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Naming Details
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thisStyleIsOkay
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this_is_okay_too
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besttoavoidthis
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MimicAdjacentCode
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szNotHungarian
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Match Your Surroundings
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Match Details
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Match the style of the surrounding code, even if it differs from other areas
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Don’t use #ifdef ’s to enable your changes
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Comments are for clarification, not for delineating your code from its surroundings
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Do not add your name to the code (the release notes will immortalize your contribution)
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Who Needs Comments? for (i = 0; i < len; i++) { char ch = text[i]; if (ch >= ’A’ && ch = ’A’ && ch
