By Simon Riggs, Hannu Krosing
Written within the cookbook sort, this publication deals studying and strategies via recipes. It includes step by step directions for directors and builders to regulate databases on PostgreSQL. The e-book is designed in one of these manner so you might learn it bankruptcy via bankruptcy or confer with recipes in no specific order. This ebook is for Sysadmins, Database directors, Architects, builders, and a person with an curiosity in making plans for or working stay creation databases. This e-book is such a lot suited for those that have a few technical adventure.
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Extra resources for PostgreSQL 9 Admin Cookbook
PgAdmin provides pgScript, which only works with pgAdmin, so is much less easily ported. For scripting, I strongly recommend the psql utility, which has many additional features you'll grow to appreciate over time. 18 Chapter 1 Although I use psql as a scripting tool, I also find it convenient as a query tool. Some people may find this strange, and assume it is a choice for experts only. Two great features of psql are the online help for SQL and "tab completion", that allows you to build up SQL quickly without having to remember the syntax.
Sql is very similar to a dump file produced by PostgreSQL backup tools, so this type of file, and the output it produces, are very common. PostgreSQL produces the name of the command as a "command tag" when it executes successfully, which is what produces the preceding output. psql can also be used in interactive mode, which is the default, so requires no option: $ psql postgres=# The first interactive command you'll need is the following: postgres=# help You can then type in SQL or other commands.
Those early versions are still robust, though many performance and enterprise features will be missing from those releases. 0 Aug 2015 (approximately) There's more... 0 However, be wary that this shows the client software version number that might differ from the server software version number. You check the server version directly using the following: bash # cat $PGDATADIRECTORY/PG_VERSION Although neither of these show the maintenance release number. Why is the database version important? PostgreSQL has internal version numbers for the data file format, the database catalog layout, and the crash recovery format.