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postgresql-docs-7.3.2-5mdk.ppc.rpm

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>PostgreSQL 7.3.2 Documentation</TH
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>II. Server Programming</H1
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><P
>    This second part of the manual explains the
    <SPAN
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>PostgreSQL</SPAN
> approach to extensibility
    and describe how users can extend
    <SPAN
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>PostgreSQL</SPAN
> by adding user-defined
    types, operators, aggregates, and both query language and
    programming language functions.  After a discussion of the
    <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> rule system, we discuss the
    trigger and SPI interfaces.
   </P
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><B
>Table of Contents</B
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><DT
>7. <A
HREF="arch-pg.html"
>Architecture</A
></DT
><DD
><DL
><DT
>7.1. <A
HREF="arch-pg.html#ARCH-PG-CONCEPTS"
><SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> Architectural Concepts</A
></DT
></DL
></DD
><DT
>8. <A
HREF="extend.html"
>Extending <SPAN
CLASS="ACRONYM"
>SQL</SPAN
>: An Overview</A
></DT
><DD
><DL
><DT
>8.1. <A
HREF="extend.html#EXTEND-HOW"
>How Extensibility Works</A
></DT
><DT
>8.2. <A
HREF="type-system.html"
>The <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> Type System</A
></DT
><DT
>8.3. <A
HREF="pg-system-catalogs.html"
>About the <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> System Catalogs</A
></DT
></DL
></DD
><DT
>9. <A
HREF="xfunc.html"
>Extending <SPAN
CLASS="ACRONYM"
>SQL</SPAN
>: Functions</A
></DT
><DD
><DL
><DT
>9.1. <A
HREF="xfunc.html#XFUNC-INTRO"
>Introduction</A
></DT
><DT
>9.2. <A
HREF="xfunc-sql.html"
>Query Language (<SPAN
CLASS="ACRONYM"
>SQL</SPAN
>) Functions</A
></DT
><DT
>9.3. <A
HREF="xfunc-pl.html"
>Procedural Language Functions</A
></DT
><DT
>9.4. <A
HREF="xfunc-internal.html"
>Internal Functions</A
></DT
><DT
>9.5. <A
HREF="xfunc-c.html"
>C Language Functions</A
></DT
><DT
>9.6. <A
HREF="xfunc-overload.html"
>Function Overloading</A
></DT
><DT
>9.7. <A
HREF="xfunc-tablefunctions.html"
>Table Functions</A
></DT
><DT
>9.8. <A
HREF="xfunc-plhandler.html"
>Procedural Language Handlers</A
></DT
></DL
></DD
><DT
>10. <A
HREF="xtypes.html"
>Extending <SPAN
CLASS="ACRONYM"
>SQL</SPAN
>: Types</A
></DT
><DT
>11. <A
HREF="xoper.html"
>Extending <SPAN
CLASS="ACRONYM"
>SQL</SPAN
>: Operators</A
></DT
><DD
><DL
><DT
>11.1. <A
HREF="xoper.html#XOPER-INTRO"
>Introduction</A
></DT
><DT
>11.2. <A
HREF="xoper-example.html"
>Example</A
></DT
><DT
>11.3. <A
HREF="xoper-optimization.html"
>Operator Optimization Information</A
></DT
></DL
></DD
><DT
>12. <A
HREF="xaggr.html"
>Extending <SPAN
CLASS="ACRONYM"
>SQL</SPAN
>: Aggregates</A
></DT
><DT
>13. <A
HREF="rules.html"
>The Rule System</A
></DT
><DD
><DL
><DT
>13.1. <A
HREF="rules.html#RULES-INTRO"
>Introduction</A
></DT
><DT
>13.2. <A
HREF="querytree.html"
>What is a Query Tree?</A
></DT
><DT
>13.3. <A
HREF="rules-views.html"
>Views and the Rule System</A
></DT
><DT
>13.4. <A
HREF="rules-insert.html"
>Rules on INSERT, UPDATE and DELETE</A
></DT
><DT
>13.5. <A
HREF="rules-permissions.html"
>Rules and Permissions</A
></DT
><DT
>13.6. <A
HREF="rules-status.html"
>Rules and Command Status</A
></DT
><DT
>13.7. <A
HREF="rules-triggers.html"
>Rules versus Triggers</A
></DT
></DL
></DD
><DT
>14. <A
HREF="xindex.html"
>Interfacing Extensions To Indexes</A
></DT
><DD
><DL
><DT
>14.1. <A
HREF="xindex.html#XINDEX-INTRO"
>Introduction</A
></DT
><DT
>14.2. <A
HREF="xindex-am.html"
>Access Methods and Operator Classes</A
></DT
><DT
>14.3. <A
HREF="xindex-strategies.html"
>Access Method Strategies</A
></DT
><DT
>14.4. <A
HREF="xindex-support.html"
>Access Method Support Routines</A
></DT
><DT
>14.5. <A
HREF="xindex-operators.html"
>Creating the Operators and Support Routines</A
></DT
><DT
>14.6. <A
HREF="xindex-opclass.html"
>Creating the Operator Class</A
></DT
><DT
>14.7. <A
HREF="xindex-opclass-features.html"
>Special Features of Operator Classes</A
></DT
></DL
></DD
><DT
>15. <A
HREF="indexcost.html"
>Index Cost Estimation Functions</A
></DT
><DT
>16. <A
HREF="triggers.html"
>Triggers</A
></DT
><DD
><DL
><DT
>16.1. <A
HREF="triggers.html#TRIGGER-DEFINITION"
>Trigger Definition</A
></DT
><DT
>16.2. <A
HREF="trigger-manager.html"
>Interaction with the Trigger Manager</A
></DT
><DT
>16.3. <A
HREF="trigger-datachanges.html"
>Visibility of Data Changes</A
></DT
><DT
>16.4. <A
HREF="trigger-examples.html"
>Examples</A
></DT
></DL
></DD
><DT
>17. <A
HREF="spi.html"
>Server Programming Interface</A
></DT
><DD
><DL
><DT
>17.1. <A
HREF="spi.html#SPI-INTERFACE"
>Interface Functions</A
></DT
><DT
>17.2. <A
HREF="spi-interface-support.html"
>Interface Support Functions</A
></DT
><DT
>17.3. <A
HREF="spi-memory.html"
>Memory Management</A
></DT
><DT
>17.4. <A
HREF="spi-visibility.html"
>Visibility of Data Changes</A
></DT
><DT
>17.5. <A
HREF="spi-examples.html"
>Examples</A
></DT
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