mirror of https://github.com/postgres/postgres
Here is a /doc patch for the oid preservation code.
Submitted by: Bruce Momjian <maillist@candle.pha.pa.us>
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/doc/man/Attic/copy.l,v 1.2 1996/09/19 20:08:09 scrappy Exp $
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.\" $Header: /cvsroot/pgsql/doc/man/Attic/copy.l,v 1.3 1996/09/19 20:09:01 scrappy Exp $
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.TH COPY SQL 11/05/95 Postgres95 Postgres95
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.SH NAME
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copy \(em copy data to or from a class from or to a Unix file.
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.SH SYNOPSIS
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.nf
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\fBcopy\fP [\fBbinary\fP] classname
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\fBcopy\fP [\fBbinary\fP] classname [\fBwith oids\fP]
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\fBto\fP|\fBfrom\fP "filename"|\fBstdin\fR|\fBstdout\fR
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[\fBUSING DELIMITERS\fP delim]
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[\fBusing delimiters\fP delim]
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.fi
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.SH DESCRIPTION
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.BR Copy
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@ -18,6 +18,11 @@ keyword
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changes the behavior of field formatting, as described below.
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.IR Classname
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is the name of an existing class.
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The keyword
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.BR "with oids"
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copies the internal unique object id (OID) for each row.
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.IR Classname
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is the name of an existing class.
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.IR Filename
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is the Unix pathname of the file. In place of a filename, the
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keywords
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@ -26,7 +31,9 @@ can be used so that input to
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.BR copy
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can be written by a Libpq application and output from the
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.BR copy
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command can be read by a Libpq application. The
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command can be read by a Libpq application.
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.PP
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The
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.BR binary
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keyword will force all data to be stored/read as binary objects rather
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than as ASCII text. It is somewhat faster than the normal
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@ -34,12 +41,15 @@ than as ASCII text. It is somewhat faster than the normal
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command, but is not generally portable, and the files generated are
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somewhat larger, although this factor is highly dependent on the data
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itself.
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.PP
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By default,
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When copying in, the
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.BR "with oids"
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keyword should only be used on an empty database because
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the loaded oids could conflict with existing oids.
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By default, a ASCII
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.BR copy
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uses a tab (\\t) character as a delimiter. The delimiter may also be changed
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to any other single-character with the use of
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.BR "USING DELIMITERS" .
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.BR "using delimiters" .
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Characters in data fields which happen to match the delimiter character
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will be quoted.
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.PP
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@ -69,6 +79,7 @@ The actual format for each instance is
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.nf
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<attr1><tab><attr2><tab>...<tab><attrn><newline>
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.fi
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The oid is placed on the beginning of the line if specified.
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.PP
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If
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.BR copy
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@ -111,12 +122,16 @@ this format must be followed
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Unsigned four-byte integer quantities are called uint32 in the below
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description.
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.nf
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uint32 totallength (not including itself),
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uint32 number of null attributes
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[uint32 attribute number of first null attribute
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The first value is:
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uint32 number of tuples
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then for each tuple:
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uint32 total length of data segment
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uint32 oid (if specified)
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uint32 number of null attributes
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[uint32 attribute number of first null attribute
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...
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uint32 attribute number of nth null attribute],
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<data>
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<data segment>
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.fi
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.bp
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.SS "ALIGNMENT OF BINARY DATA"
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/doc/man/Attic/pg_dump.1,v 1.1.1.1 1996/08/18 22:14:26 scrappy Exp $
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.\" $Header: /cvsroot/pgsql/doc/man/Attic/pg_dump.1,v 1.2 1996/09/19 20:09:02 scrappy Exp $
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.TH PG_DUMP UNIX 1/20/96 Postgres95 Postgres95
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.SH NAME
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pg_dump \(em dumps out a Postgres database into a script file
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@ -21,8 +21,20 @@ port]
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.BR "-v"
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]
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[\c
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.BR "-d[a]"
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]
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[\c
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.BR "-S"
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help]
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[\c
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.BR "-a"
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]
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[\c
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.BR "-t"
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table]
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[\c
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.BR "-o"
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]
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dbname
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.in -5n
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.SH DESCRIPTION
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