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Welcome to the <productname>PostgreSQL</productname> Tutorial. The
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Welcome to the <productname>PostgreSQL</productname> Tutorial. The
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tutorial is intended to give an introduction
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tutorial is intended to give an introduction
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to <productname>PostgreSQL</productname>, relational database
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to <productname>PostgreSQL</productname>, relational database
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concepts, and the SQL language. We assume some general knowledge about
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concepts, and the SQL language. We assume some general knowledge about
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how to use computers and no particular Unix or programming experience is
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how to use computers and no particular Unix or programming experience is
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required. This tutorial is intended to provide hands-on experience with
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required. This tutorial is intended to provide hands-on experience with
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important aspects of the <productname>PostgreSQL</productname> system.
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important aspects of the <productname>PostgreSQL</productname> system.
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It makes no attempt to be a comprehensive treatment of the topics it covers.
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It makes no attempt to be a comprehensive treatment of the topics it covers.
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</para>
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</para>
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This part describes the use of the <acronym>SQL</acronym> language
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This part describes the use of the <acronym>SQL</acronym> language
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in <productname>PostgreSQL</productname>. We start with
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in <productname>PostgreSQL</productname>. We start with
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describing the general syntax of <acronym>SQL</acronym>, then
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describing the general syntax of <acronym>SQL</acronym>, then
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how to create tables, how to populate the database, and how to
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how to create tables, how to populate the database, and how to
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query it. The middle part lists the available data types and
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query it. The middle part lists the available data types and
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functions for use in <acronym>SQL</acronym> commands. Lastly,
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functions for use in <acronym>SQL</acronym> commands. Lastly,
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we address several aspects of importance for tuning a database.
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we address several aspects of importance for tuning a database.
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</para>
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</para>
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follow it from start to end and gain a full understanding of the topics
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follow it from start to end and gain a full understanding of the topics
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without having to refer forward too many times. The chapters are
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without having to refer forward too many times. The chapters are
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intended to be self-contained, so that advanced users can read the
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intended to be self-contained, so that advanced users can read the
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chapters individually as they choose. The information is presented
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chapters individually as they choose. The information is presented
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in narrative form with topical units. Readers looking for a complete
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in narrative form with topical units. Readers looking for a complete
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description of a particular command are encouraged to review
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description of a particular command are encouraged to review
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the <xref linkend="reference"/>.
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the <xref linkend="reference"/>.
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</para>
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</para>
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<para>
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<para>
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Readers should know how to connect to a
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Readers should know how to connect to a
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<productname>PostgreSQL</productname> database and issue
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<productname>PostgreSQL</productname> database and issue
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<acronym>SQL</acronym> commands. Readers that are unfamiliar with
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<acronym>SQL</acronym> commands. Readers that are unfamiliar with
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these issues are encouraged to read <xref linkend="tutorial"/>
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these issues are encouraged to read <xref linkend="tutorial"/>
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first. <acronym>SQL</acronym> commands are typically entered
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first. <acronym>SQL</acronym> commands are typically entered
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<para>
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<para>
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This part covers topics that are of interest to a
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This part covers topics that are of interest to a
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<productname>PostgreSQL</productname> administrator. This includes
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<productname>PostgreSQL</productname> administrator. This includes
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installation, configuration of the server, management of users
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installation, configuration of the server, management of users
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and databases, and maintenance tasks. Anyone running
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and databases, and maintenance tasks. Anyone running
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<productname>PostgreSQL</productname> server, even for
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<productname>PostgreSQL</productname> server, even for
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personal use, but especially in production, should be familiar
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personal use, but especially in production, should be familiar
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with these topics.
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with these topics.
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</para>
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</para>
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<para>
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<para>
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The information attempts to be in the order in which
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The information attempts to be in the order in which
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a new user should read it. The chapters are self-contained and
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a new user should read it. The chapters are self-contained and
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can be read individually as desired. The information is presented
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can be read individually as desired. The information is presented
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in a narrative form in topical units. Readers looking for a complete
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in a narrative form in topical units. Readers looking for a complete
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description of a command are encouraged to review the
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description of a command are encouraged to review the
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<xref linkend="reference"/>.
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<xref linkend="reference"/>.
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</para>
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</para>
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<para>
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<para>
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The first few chapters are written so they can be understood
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The first few chapters are written so they can be understood
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without prerequisite knowledge, so new users who need to set
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without prerequisite knowledge, so new users who need to set
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up their own server can begin their exploration. The rest of this
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up their own server can begin their exploration. The rest of this
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part is about tuning and management; that material
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part is about tuning and management; that material
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assumes that the reader is familiar with the general use of
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assumes that the reader is familiar with the general use of
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the <productname>PostgreSQL</productname> database system. Readers are
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the <productname>PostgreSQL</productname> database system. Readers are
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This part describes the client programming interfaces distributed
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This part describes the client programming interfaces distributed
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with <productname>PostgreSQL</productname>. Each of these chapters can be
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with <productname>PostgreSQL</productname>. Each of these chapters can be
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read independently. There are many external programming
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read independently. There are many external programming
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interfaces for client programs that are distributed separately. They
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interfaces for client programs that are distributed separately. They
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contain their own documentation (<xref linkend="external-projects"/>
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contain their own documentation (<xref linkend="external-projects"/>
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lists some of the more popular ones). Readers of this part should be
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lists some of the more popular ones). Readers of this part should be
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familiar with using <acronym>SQL</acronym> to manipulate
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familiar with using <acronym>SQL</acronym> to manipulate
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