Tag: PostgreSQL

Now GET DIAGNOSTIC will return the number of rows processed by COPY statement in a Pl/Pgsql function.COPY statement in Pl/Pgsql Function: CREATE OR REPLACE FUNCTION public.copy_data(fname text) RETURNS integerAS $$declare copy_qry text; cnt integer;Begincopy_qry := ‘copy t from’||quote_literal(fname)||’ with CSV HEADER;’;Execute copy_qry;GET DIAGNOSTICS cnt = ROW_COUNT;return cnt;end;$$ Language plpgsql; Previous release: -bash-4.1$ psqlpsql.bin (9.2.3)Type “help”…

New feature introduced in PostgreSQL 9.3Beta 1 i.e. “Disk page checksums”. Thanks to author Ants Aasama and Simon Riggs, Jeff Davis,Greg Smith. In earlier releases, if there’s any data corruption block on disk it was silently ignored until any pointer arrives on it or some wrong results shown by the queries. Now, data corruption detected beforehand…

So what is “UTF-8 BOM” mean ? its byte order mark for UTF-8, some bytes (0xEF,0xBB,0xBF) are added at the start of the file to indicate that the file having unicode characters in it. BOM Characters “9”. As per Unicode documentation, the presence of BOM in file are useless, because it causes problems with non-BOM-aware…

PostgreSQL users access to the database goes through libpq library. It also has a feature of allowing automation for users without prompting password by keeping their details in .pgpass file. Lets see… Points to be considered when setting .pgpass file.1. It should be created in postgres user home directory.2. It should disallow any access-level to…

Yes, pgChess extension now allows you to play a chess game with Postgres Instance(computer). Thanks to authors. Installation is very simple with pgxnclient. pgChess extension supported with another extension called pg2podg.Documentation Link:https://github.com/gciolli/pgChess/blob/master/doc/ pgxnclient install pgchesspgxnclient install pg2podgAfter installing, just run CREATE EXTENSION commands create extension pgchess;create extension pg2podg; Two types of play, (1) PC vs…