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>RESET</H1
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><H2
>Name</H2
>RESET -- restore the value of a run-time parameter to the default value</DIV
><DIV
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><A
NAME="AEN77034"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>RESET <TT
CLASS="REPLACEABLE"
><I
>configuration_parameter</I
></TT
>
RESET ALL</PRE
></DIV
><DIV
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><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>RESET</TT
> restores run-time parameters to their
default values. <TT
CLASS="COMMAND"
>RESET</TT
> is an alternative
spelling for
</P><PRE
CLASS="SYNOPSIS"
>SET <TT
CLASS="REPLACEABLE"
><I
>configuration_parameter</I
></TT
> TO DEFAULT</PRE
><P>
Refer to <A
HREF="sql-set.html"
>SET</A
> for
details.
</P
><P
> The default value is defined as the value that the parameter would
have had, if no <TT
CLASS="COMMAND"
>SET</TT
> had ever been issued for it in the
current session. The actual source of this value might be a
compiled-in default, the configuration file, command-line options,
or per-database or per-user default settings. This is subtly different
from defining it as <SPAN
CLASS="QUOTE"
>"the value that the parameter had at session
start"</SPAN
>, because if the value came from the configuration file, it
will be reset to whatever is specified by the configuration file now.
See <A
HREF="runtime-config.html"
>Chapter 18</A
> for details.
</P
><P
> The transactional behavior of <TT
CLASS="COMMAND"
>RESET</TT
> is the same as
<TT
CLASS="COMMAND"
>SET</TT
>: its effects will be undone by transaction rollback.
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><H2
>Parameters</H2
><P
></P
><DIV
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><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>configuration_parameter</I
></TT
></DT
><DD
><P
> Name of a settable run-time parameter. Available parameters are
documented in <A
HREF="runtime-config.html"
>Chapter 18</A
> and on the
<A
HREF="sql-set.html"
>SET</A
> reference page.
</P
></DD
><DT
><TT
CLASS="LITERAL"
>ALL</TT
></DT
><DD
><P
> Resets all settable run-time parameters to default values.
</P
></DD
></DL
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><A
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></A
><H2
>Examples</H2
><P
> Set the <TT
CLASS="VARNAME"
>timezone</TT
> configuration variable to its default value:
</P><PRE
CLASS="SCREEN"
>RESET timezone;</PRE
><P></P
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></A
><H2
>Compatibility</H2
><P
> <TT
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>RESET</TT
> is a <SPAN
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>PostgreSQL</SPAN
> extension.
</P
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>See Also</H2
><A
HREF="sql-set.html"
>SET</A
>, <A
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>SHOW</A
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