Allow optional () after current_user, session_user, user, current_time,
current_timestamp, current_date for ODBC compatibility. Add more functions to odbc.sql catalog extension, use new CREATE OR REPLACE FUNCTION. Document iODBC/unixODBC build options.
This commit is contained in:
Peter Eisentraut
parent
839b9bc011
commit
ec5c62874d
@ -1,4 +1,4 @@
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<!-- $Header: /cvsroot/pgsql/doc/src/sgml/installation.sgml,v 1.60 2001/10/09 18:46:00 petere Exp $ -->
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<!-- $Header: /cvsroot/pgsql/doc/src/sgml/installation.sgml,v 1.61 2001/10/09 22:32:32 petere Exp $ -->
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<chapter id="installation">
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<title><![%standalone-include[<productname>PostgreSQL</>]]>
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@ -696,7 +696,25 @@ su - postgres
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<term><option>--enable-odbc</option></term>
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<listitem>
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<para>
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Build the ODBC driver package.
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Build the ODBC driver.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--with-iodbc</option></term>
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<listitem>
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<para>
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Build the ODBC driver for use with <productname>iODBC</>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--with-unixodbc</option></term>
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<listitem>
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<para>
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Build the ODBC driver for use with <productname>unixODBC</>.
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</para>
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</listitem>
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</varlistentry>
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@ -708,10 +726,16 @@ su - postgres
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Specifies the directory where the ODBC driver will expect its
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<filename>odbcinst.ini</> configuration file. The default is
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<filename>/usr/local/pgsql/etc</filename> or whatever you
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specified as <option>--sysconfdir</option>. A default file
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will be installed there. If you intend to share the
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<filename>odbcinst.ini</> file between several ODBC drivers
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then you may want to use this option.
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specified as <option>--sysconfdir</option>. It should be
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arranged that the driver reads the same file as the driver
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manager.
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</para>
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<para>
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If either the option <option>--with-iodbc</option> or the
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option <option>--with-unixodbc</option> is used, this option
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will be ignored because in that case the driver manager
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handles the location of the configuration file.
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</para>
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</listitem>
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</varlistentry>
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@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/Attic/odbc.sgml,v 1.24 2001/09/13 15:55:23 petere Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/Attic/odbc.sgml,v 1.25 2001/10/09 22:32:32 petere Exp $
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-->
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<chapter id="odbc">
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@ -80,39 +80,69 @@ $Header: /cvsroot/pgsql/doc/src/sgml/Attic/odbc.sgml,v 1.24 2001/09/13 15:55:23
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<title>Installation</title>
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<para>
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The first thing to note about the <productname>psqlODBC</> driver
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(or any <acronym>ODBC</> driver) is that there must exist a
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<firstterm>driver manager</> on the system where the
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<acronym>ODBC</> driver is to be used. There exists a free
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<acronym>ODBC</> driver for Unix called
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<indexterm><primary>iODBC</primary></indexterm>
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<productname>iODBC</> which can be obtained via <ulink
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url="http://www.iodbc.org">http://www.iodbc.org</ulink>.
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Instructions for installing <productname>iODBC</> are contained in
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the <productname>iODBC</> distribution. Having said that, any
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driver manager that you can find for your platform should support
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the <productname>psqlODBC</> driver, or any other <acronym>ODBC</>
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driver for that matter.
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In order to make use of an <acronym>ODBC</> driver there must
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exist a <firstterm>driver manager</> on the system where the
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<acronym>ODBC</> driver is to be used. There are two free
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<acronym>ODBC</> driver managers for Unix-like operating systems
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known to us: <indexterm><primary>iODBC</primary></indexterm>
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<ulink url="http://www.iodbc.org"><productname>iODBC</></ulink>
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and <indexterm><primary>unixODBC</primary></indexterm> <ulink
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url="http://www.unixodbc.org"><productname>unixODBC</></ulink>.
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Instructions for installing these driver managers are to be found
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in the respective distribution. Software that provides database
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access through <acronym>ODBC</acronym> should provide its own
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driver manager (which may well be one of these two). Having said
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that, any driver manager that you can find for your platform
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should support the <productname>PostgreSQL</> <acronym>ODBC</>
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driver, or any other <acronym>ODBC</> driver for that matter.
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</para>
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<note>
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<para>
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The <productname>unixODBC</> distribution ships with a
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<productname>PostgreSQL</> <acronym>ODBC</> driver of its own,
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which is similar to the one contained in the
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<productname>PostgreSQL</> distribution. It is up to you which
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one you want to use. We plan to coordinate the development of
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both drivers better in the future.
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</para>
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</note>
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<para>
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To install the <acronym>ODBC</> you simply need to supply the
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<option>--enable-odbc</> option to the <filename>configure</>
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script when you are building the entire <productname>PostgreSQL</>
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distribution. The library will then automatically be built and
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installed with the rest of the programs. If you forget that option
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or want to build the ODBC driver later you can change into the
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directory <filename>src/interfaces/odbc</> and do <literal>make</>
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and <literal>make install</> there.
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</para>
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<para>
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To install <productname>psqlODBC</> you simply need to supply the
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<option>--enable-odbc</> option to the <filename>configure</> script when you are
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building the entire <productname>PostgreSQL</> distribution. The library
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and header files will then automatically be built and installed with the
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rest of the programs. If you forget that option or want to build the ODBC
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driver later you can change into the directory <filename>src/interfaces/odbc</>
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and do <literal>make</> and <literal>make install</> there.
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It is also possible to build the driver to be specifically tuned
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for use with <productname>iODBC</> or <productname>unixODBC</>.
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This means in particular that the driver will use the driver
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manager's routines to process the configuration files, which is
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probably desirable since it creates a more consistent
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<acronym>ODBC</> environment on your system. If you want to do
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that, then supply the <filename>configure</> options
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<option>--with-iodbc</> or <option>--with-unixodbc</> (but not
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both).
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</para>
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<para>
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The installation-wide configuration file <filename>odbcinst.ini</> will be
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installed into the directory <filename>/usr/local/pgsql/etc/</>, or equivalent,
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depending on what <option>--prefix</> and/or <option>--sysconfdir</> options
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you supplied to <filename>configure</>. Since this file can also be shared
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between different <acronym>ODBC</> drivers you can also install it in a shared
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location. To do that, override the location of this file with the
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<option>--with-odbcinst</> option.
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If you build a <quote>stand-alone</quote> driver (not tied to
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<productname>iODBC</> or <productname>unixODBC</>), then you can
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specify where the driver should look for the configuration file
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<filename>odbcinst.ini</>. By default it will be the directory
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<filename>/usr/local/pgsql/etc/</>, or equivalent, depending on
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what <option>--prefix</> and/or <option>--sysconfdir</> options
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you supplied to <filename>configure</>. To select a specific
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location outside the <productname>PostgreSQL</> installation
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layout, use the <option>--with-odbcinst</> option. To be most
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useful, it should be arranged that the driver and the driver
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manager read the same configuration file.
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</para>
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<para>
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@ -125,20 +155,12 @@ $Header: /cvsroot/pgsql/doc/src/sgml/Attic/odbc.sgml,v 1.24 2001/09/13 15:55:23
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psql -d template1 -f <replaceable>LOCATION</>/odbc.sql
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</programlisting>
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where specifying <literal>template1</literal> as the target
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database will ensure that all subsequent new databases will
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have these same definitions.
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database will ensure that all subsequent new databases will have
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these same definitions. If for any reason you want to remove
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these functions again, run the file
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<filename>odbc-drop.sql</filename> through
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<command>psql</command>.
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</para>
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<sect2>
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<title>Supported Platforms</title>
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<para>
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<productname>psqlODBC</productname> has been built and tested
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on <systemitem class="osname">Linux</>. There have been reports of success
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with <systemitem class="osname">FreeBSD</> and with <systemitem class="osname">Solaris</>. There are no known restrictions
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on the basic code for other platforms which already support
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<productname>Postgres</productname>.
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</para>
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</sect2>
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</sect1>
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<sect1 id="odbc-config">
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@ -11,7 +11,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.260 2001/10/08 18:16:59 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.261 2001/10/09 22:32:32 petere Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -237,6 +237,7 @@ static void doNegateFloat(Value *v);
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%type <list> row_descriptor, row_list, in_expr_nodes
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%type <node> row_expr
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%type <node> case_expr, case_arg, when_clause, case_default
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%type <boolean> opt_empty_parentheses
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%type <list> when_clause_list
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%type <ival> sub_type
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%type <list> OptCreateAs, CreateAsList
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@ -4894,7 +4895,7 @@ c_expr: attr
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n->agg_distinct = FALSE;
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$$ = (Node *)n;
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}
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| CURRENT_DATE
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| CURRENT_DATE opt_empty_parentheses
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{
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/*
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* Translate as "date('now'::text)".
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@ -4927,7 +4928,7 @@ c_expr: attr
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$$ = (Node *)makeTypeCast((Node *)s, d);
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}
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| CURRENT_TIME
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| CURRENT_TIME opt_empty_parentheses
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{
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/*
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* Translate as "timetz('now'::text)".
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@ -4978,7 +4979,7 @@ c_expr: attr
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$$ = (Node *)makeTypeCast((Node *)s, d);
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}
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| CURRENT_TIMESTAMP
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| CURRENT_TIMESTAMP opt_empty_parentheses
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{
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/*
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* Translate as "timestamptz('now'::text)".
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@ -5032,7 +5033,7 @@ c_expr: attr
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$$ = (Node *)makeTypeCast((Node *)s, d);
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}
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| CURRENT_USER
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| CURRENT_USER opt_empty_parentheses
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = "current_user";
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@ -5041,7 +5042,7 @@ c_expr: attr
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n->agg_distinct = FALSE;
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$$ = (Node *)n;
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}
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| SESSION_USER
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| SESSION_USER opt_empty_parentheses
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = "session_user";
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@ -5050,7 +5051,7 @@ c_expr: attr
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n->agg_distinct = FALSE;
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$$ = (Node *)n;
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}
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| USER
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| USER opt_empty_parentheses
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = "current_user";
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@ -5386,6 +5387,8 @@ attrs: attr_name
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{ $$ = lappend($1, makeString("*")); }
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;
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opt_empty_parentheses: '(' ')' { $$ = TRUE; }
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| /*EMPTY*/ { $$ = TRUE; }
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/*****************************************************************************
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*
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@ -2,7 +2,7 @@
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#
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# GNUMakefile for psqlodbc (Postgres ODBC driver)
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#
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# $Header: /cvsroot/pgsql/src/interfaces/odbc/Attic/GNUmakefile,v 1.21 2001/09/23 13:32:24 petere Exp $
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# $Header: /cvsroot/pgsql/src/interfaces/odbc/Attic/GNUmakefile,v 1.22 2001/10/09 22:32:33 petere Exp $
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#
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#-------------------------------------------------------------------------
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@ -43,7 +43,7 @@ OBJS += gpps.o
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override CPPFLAGS += -DODBCINSTDIR='"$(odbcinst_ini_dir)"'
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endif
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|
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all: all-lib
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all: all-lib odbc-drop.sql
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|
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# Shared library stuff
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include $(top_srcdir)/src/Makefile.shlib
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@ -53,16 +53,20 @@ include $(top_srcdir)/src/Makefile.shlib
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# names and we don't want those. (This issue is probably ELF specific.)
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LINK.shared += $(shlib_symbolic)
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|
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odbc-drop.sql: odbc.sql
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sed -n '/^CREATE OR REPLACE FUNCTION/s/CREATE OR REPLACE FUNCTION \([^ (][^ (]*([^)]*)\).*/DROP FUNCTION \1;/p' $< >$@
|
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|
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install: all installdirs
|
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$(INSTALL_DATA) $(srcdir)/odbc.sql $(DESTDIR)$(datadir)/odbc.sql
|
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$(INSTALL_DATA) odbc-drop.sql $(DESTDIR)$(datadir)/odbc-drop.sql
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$(MAKE) install-lib
|
||||
|
||||
installdirs:
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$(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(datadir)
|
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|
||||
uninstall: uninstall-lib
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rm -f $(DESTDIR)$(datadir)/odbc.sql
|
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rm -f $(DESTDIR)$(datadir)/odbc.sql $(DESTDIR)$(datadir)/odbc-drop.sql
|
||||
|
||||
clean distclean maintainer-clean: clean-lib
|
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rm -f $(OBJS)
|
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rm -f odbc-drop.sql
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||||
|
||||
@ -1,139 +1,212 @@
|
||||
-- PostgreSQL catalog extensions for ODBC compliance
|
||||
-- $Header: /cvsroot/pgsql/src/interfaces/odbc/Attic/odbc.sql,v 1.1 2000/09/18 20:11:37 petere Exp $
|
||||
-- PostgreSQL catalog extensions for ODBC compatibility
|
||||
-- $Header: /cvsroot/pgsql/src/interfaces/odbc/Attic/odbc.sql,v 1.2 2001/10/09 22:32:33 petere Exp $
|
||||
|
||||
-- ODBC functions are described here:
|
||||
-- <http://msdn.microsoft.com/library/en-us/odbc/htm/odbcscalar_functions.asp>
|
||||
|
||||
-- Note: If we format this file consistently we can automatically
|
||||
-- generate a corresponding "drop script". Start "CREATE" in the first
|
||||
-- column, and keep everything up to and including the argument list on
|
||||
-- the same line. See also the makefile rule.
|
||||
|
||||
|
||||
-- In the current driver, ODBC functions must map directly into a
|
||||
-- Postgres function. So in some cases we must create a compatible
|
||||
-- function.
|
||||
|
||||
|
||||
-- truncate on the left
|
||||
CREATE FUNCTION ltrunc(text, integer)
|
||||
RETURNS text
|
||||
AS 'SELECT substring($1 FROM 1 FOR $2)'
|
||||
LANGUAGE 'SQL';
|
||||
|
||||
-- truncate on the right
|
||||
CREATE FUNCTION rtrunc(text, integer)
|
||||
RETURNS text
|
||||
AS 'SELECT substring($1 FROM (char_length($1)-($2)+1) FOR $2)'
|
||||
LANGUAGE 'SQL';
|
||||
|
||||
CREATE FUNCTION space(integer)
|
||||
RETURNS text
|
||||
AS 'SELECT lpad('''', $1, '' '')'
|
||||
LANGUAGE 'SQL';
|
||||
|
||||
-- String Functions
|
||||
-- ++++++++++++++++
|
||||
--
|
||||
-- Mathematical functions
|
||||
-- Built-in: ASCII, BIT_LENGTH, CHAR_LENGTH, CHARACTER_LENGTH, LTRIM,
|
||||
-- OCTET_LENGTH, POSITION, REPEAT, RTRIM, SUBSTRING
|
||||
-- Missing: DIFFERENCE, REPLACE, SOUNDEX, LENGTH (ODBC sense)
|
||||
-- Keyword problems: CHAR, LEFT, RIGHT
|
||||
|
||||
|
||||
-- CHAR(code)
|
||||
CREATE OR REPLACE FUNCTION "char"(integer) RETURNS text AS '
|
||||
SELECT chr($1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- CONCAT(string1, string2)
|
||||
CREATE OR REPLACE FUNCTION concat(text, text) RETURNS text AS '
|
||||
SELECT $1 || $2;
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- INSERT(string1, start, len, string2)
|
||||
CREATE OR REPLACE FUNCTION insert(text, integer, integer, text) RETURNS text AS '
|
||||
SELECT substring($1 from 1 for $2) || $4 || substring($1 from $2 + $3 + 1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- LCASE(string)
|
||||
CREATE OR REPLACE FUNCTION lcase(text) RETURNS text AS '
|
||||
SELECT lower($1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- LEFT(string, count)
|
||||
CREATE OR REPLACE FUNCTION "left"(text, integer) RETURNS text AS '
|
||||
SELECT substring($1 for $2);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- LOCATE(substring, string[, start])
|
||||
CREATE OR REPLACE FUNCTION locate(text, text) RETURNS integer AS '
|
||||
SELECT position($1 in $2);
|
||||
' LANGUAGE SQL;
|
||||
CREATE OR REPLACE FUNCTION locate(text, text, integer) RETURNS integer AS '
|
||||
SELECT position($1 in substring($2 from $3)) + $3 - 1;
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- RIGHT(string, count)
|
||||
CREATE OR REPLACE FUNCTION "right"(text, integer) RETURNS text AS '
|
||||
SELECT substring($1 from char_length($1) - $2 + 1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- SPACE(count)
|
||||
CREATE OR REPLACE FUNCTION space(integer) RETURNS text AS '
|
||||
SELECT repeat('' '', $1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- UCASE(string)
|
||||
CREATE OR REPLACE FUNCTION ucase(text) RETURNS text AS '
|
||||
SELECT upper($1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- Numeric Functions
|
||||
-- +++++++++++++++++
|
||||
--
|
||||
-- Built-in: ABS, ACOS, ASIN, ATAN, ATAN2, COS, COT, DEGRESS, EXP,
|
||||
-- FLOOR, MOD, PI, RADIANS, ROUND, SIGN, SIN, SQRT, TAN
|
||||
-- Missing: LOG (ODBC sense)
|
||||
|
||||
CREATE FUNCTION truncate(numeric,integer)
|
||||
RETURNS numeric
|
||||
AS 'SELECT trunc($1, $2)'
|
||||
LANGUAGE 'SQL';
|
||||
|
||||
-- CEILING(num)
|
||||
CREATE OR REPLACE FUNCTION ceiling(numeric) RETURNS numeric AS '
|
||||
SELECT ceil($1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- LOG10(num)
|
||||
CREATE OR REPLACE FUNCTION log10(double precision) RETURNS double precision AS '
|
||||
SELECT log($1);
|
||||
' LANGUAGE SQL;
|
||||
CREATE OR REPLACE FUNCTION log10(numeric) RETURNS numeric AS '
|
||||
SELECT log($1);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- POWER(num, num)
|
||||
CREATE OR REPLACE FUNCTION power(double precision, double precision)
|
||||
RETURNS double precision AS '
|
||||
SELECT pow($1, $2);
|
||||
' LANGUAGE SQL;
|
||||
CREATE OR REPLACE FUNCTION power(numeric, numeric)
|
||||
RETURNS numeric AS '
|
||||
SELECT pow($1, $2);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- RAND([seed])
|
||||
CREATE OR REPLACE FUNCTION rand() RETURNS double precision AS '
|
||||
SELECT random();
|
||||
' LANGUAGE SQL;
|
||||
CREATE OR REPLACE FUNCTION rand(double precision) RETURNS double precision AS '
|
||||
SELECT setseed($1);
|
||||
SELECT random();
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- TRUNCATE(num, places)
|
||||
CREATE OR REPLACE FUNCTION truncate(numeric, integer) RETURNS numeric AS '
|
||||
SELECT trunc($1, $2);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- Time, Date, and Interval Functions
|
||||
-- ++++++++++++++++++++++++++++++++++
|
||||
--
|
||||
-- Date/time functions for v7.0
|
||||
--
|
||||
-- Built-in: CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, EXTRACT, NOW
|
||||
-- Missing: none
|
||||
|
||||
CREATE FUNCTION curdate()
|
||||
RETURNS date
|
||||
AS 'SELECT CAST(''now'' AS date)'
|
||||
LANGUAGE 'SQL';
|
||||
|
||||
CREATE FUNCTION curtime()
|
||||
RETURNS time
|
||||
AS 'SELECT CAST(''now'' AS time)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION curdate() RETURNS date AS '
|
||||
SELECT current_date;
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION dayname(timestamp)
|
||||
RETURNS text
|
||||
AS 'SELECT to_char($1,''Day'')'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION curtime() RETURNS time with time zone AS '
|
||||
SELECT current_time;
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION dayofmonth(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''day'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION dayname(timestamp) RETURNS text AS '
|
||||
SELECT to_char($1,''Day'');
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION dayofweek(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT ( CAST(date_part(''dow'', $1) AS integer) + 1)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION dayofmonth(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(day FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION dayofyear(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''doy'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION dayofweek(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(dow FROM $1) AS integer) + 1;
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION hour(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''hour'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION dayofyear(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(doy FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION minute(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''minute'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION hour(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(hour FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION odbc_month(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''month'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION minute(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(minute FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION monthname(timestamp)
|
||||
RETURNS text
|
||||
AS 'SELECT to_char($1, ''Month'')'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION month(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(month FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION quarter(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''quarter'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION monthname(timestamp) RETURNS text AS '
|
||||
SELECT to_char($1, ''Month'');
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION second(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''second'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION quarter(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(quarter FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE OR REPLACE FUNCTION second(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(second FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
/*
|
||||
-- The first argument is an integer constant denoting the units
|
||||
-- of the second argument. Until we know the actual values, we
|
||||
-- cannot implement these. - thomas 2000-04-11
|
||||
CREATE FUNCTION timestampadd(integer,integer,timestamp)
|
||||
RETURNS timestamp
|
||||
AS 'SELECT CAST(($3 + ($2 * $1)) AS timestamp)'
|
||||
LANGUAGE 'SQL';
|
||||
xCREATE OR REPLACE FUNCTION timestampadd(integer, integer, timestamp)
|
||||
RETURNS timestamp AS '
|
||||
SELECT CAST(($3 + ($2 * $1)) AS timestamp);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION timestampdiff(integer,integer,timestamp)
|
||||
RETURNS timestamp
|
||||
AS 'SELECT CAST(($3 + ($2 * $1)) AS timestamp)'
|
||||
LANGUAGE 'SQL';
|
||||
xCREATE OR REPLACE FUNCTION timestampdiff(integer, integer, timestamp)
|
||||
RETURNS timestamp AS '
|
||||
SELECT CAST(($3 + ($2 * $1)) AS timestamp);
|
||||
' LANGUAGE SQL;
|
||||
*/
|
||||
|
||||
CREATE FUNCTION week(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''week'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION week(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(week FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
CREATE FUNCTION year(timestamp)
|
||||
RETURNS integer
|
||||
AS 'SELECT CAST(date_part(''year'', $1) AS integer)'
|
||||
LANGUAGE 'SQL';
|
||||
CREATE OR REPLACE FUNCTION year(timestamp) RETURNS integer AS '
|
||||
SELECT CAST(EXTRACT(year FROM $1) AS integer);
|
||||
' LANGUAGE SQL;
|
||||
|
||||
|
||||
-- System Functions
|
||||
-- ++++++++++++++++
|
||||
--
|
||||
-- System functions.
|
||||
--
|
||||
|
||||
/*
|
||||
CREATE FUNCTION database()
|
||||
RETURNS text
|
||||
AS 'SELECT ...'
|
||||
LANGUAGE 'SQL';
|
||||
*/
|
||||
|
||||
CREATE FUNCTION odbc_user()
|
||||
RETURNS text
|
||||
AS 'SELECT CAST(USER AS text)'
|
||||
LANGUAGE 'SQL';
|
||||
-- Built-in: USER
|
||||
-- Missing: DATABASE, IFNULL
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user