Add a note warning that COPY BINARY is very datatype-specific.

Per a complaint from Gordon Shannon.
This commit is contained in:
Tom Lane 2009-09-05 23:58:01 +00:00
parent e3b3878a08
commit a2367f89ff

View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/copy.sgml,v 1.86 2009/07/25 00:07:10 adunstan Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/copy.sgml,v 1.87 2009/09/05 23:58:01 tgl Exp $
PostgreSQL documentation
-->
@ -300,6 +300,10 @@ COPY <replaceable class="parameter">count</replaceable>
somewhat faster than the normal text mode, but a binary-format
file is less portable across machine architectures and
<productname>PostgreSQL</productname> versions.
Also, the binary format is very data type specific; for example
it will not work to output binary data from a <type>smallint</> column
and read it into an <type>integer</> column, even though that would work
fine in text format.
</para>
<para>