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PostgreSQL/contrib/mysql/my2pg.pl
Bruce Momjian c7aa5998ae Update my2pg, new version.
2001-03-06 22:46:50 +00:00

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#!/usr/bin/perl
#
# My2Pg: MySQL to PostgreSQL dump conversion utility
#
# (c) 2000,2001 Maxim Rudensky <fonin@ziet.zhitomir.ua>
# (c) 2000 Valentine Danilchuk <valdan@ziet.zhitomir.ua>
# All right reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by the Max Rudensky
# and its contributors.
# 4. Neither the name of the author nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $Id: my2pg.pl,v 1.4 2001/03/06 22:46:50 momjian Exp $
# TODO:
# + Handle SETs
# - LIKE implementation
# - memory use optimisation in SET_output function
# - raw integer values as input values must be OK
# - Use autoconf & automake to auto-build makefiles
#
# $Log: my2pg.pl,v $
# Revision 1.4 2001/03/06 22:46:50 momjian
# Update my2pg, new version.
#
# Revision 1.18 2001/03/06 22:25:40 fonin
# Documentation up2dating.
#
# Revision 1.17 2001/03/04 13:01:50 fonin
# Fixes to make work it right with MySQL 3.23 dumps. Tested on mysqldump 8.11.
# Also, AUTO_INCREMENT->SERIAL fields no more have DEFAULT and NOT NULL
# definitions.
#
# Revision 1.16 2001/02/02 08:15:34 fonin
# Sequences should be created BEFORE creating any objects \nthat depends on it.
#
# Revision 1.15 2001/01/30 10:13:36 fonin
# Re-released under BSD-like license.
#
# Revision 1.14 2000/12/18 20:55:13 fonin
# Better -n implementation.
#
# Revision 1.13 2000/12/18 15:26:33 fonin
# Added command-line options. -n forces *CHAR DEFAULT '' NOT NULL to be
# converted to *CHAR NULL.
# AUTO_INCREMENT fields converted not in SERIAL but in
# INT* NOT NULL DEFAULT nextval('seqname').
# Documentation refreshed.
# Dump enclosed in single transaction from now.
#
# Revision 1.12 2000/12/14 20:57:15 fonin
# Doublequotation bug fixed (in CREATE INDEX ON TABLE (field1,field2))
#
# Revision 1.10 2000/11/27 14:18:22 fonin
# Fixed bug - occasionaly was broken CREATE SEQUENCE generation
#
# Revision 1.8 2000/11/24 15:24:16 fonin
# TIMESTAMP fix: MySQL output YYYYMMDDmmhhss to YYYYMMDD mmhhss
#
# Revision 1.7 2000/11/22 23:04:41 fonin
# TIMESTAMP field fix. Better doublequoting. Splitting output dump
# into 2 transactions - create/load/indexing first, sequence setvals then.
# Added POD documentation.
#
#
use Getopt::Std;
my %opts; # command line options
my $chareg=''; # CHAR conversion regexps
# parse command line
getopts('nh',\%opts);
# output syntax
if($opts{h} ne '') {
usage();
exit;
}
# convert CHAR types from NOT NULL DEFAULT '' to NULL
if($opts{n} ne '') {
$chareg='\s*?(default\s*?\'\')*?\s*?not\s*?null';
}
$|=1;
print("------------------------------------------------------------------");
print("\n-- My2Pg \$Revision: 1.4 $ \translated dump");
print("\n--");
print("\n------------------------------------------------------------------");
print("\n\nBEGIN;\n\n\n");
my %index; # contains array of CREATE INDEX for each table
my %seq; # contains CREATE SEQUENCE for each table
my %primary; # contains primary (eg SERIAL) fields for each table
my %identifier; # contains generated by this program identifiers
my $j=-1; # current position in $index{table}
my @check; # CHECK constraint for current
# generating full path to libtypes.c
my $libtypesource='libtypes.c';
my $libtypename=`pwd`;
chomp($libtypename);
$libtypename.='/libtypes.so';
# push header to libtypes.c
open(LIBTYPES,">$libtypesource");
print LIBTYPES "/******************************************************";
print LIBTYPES "\n * My2Pg \$Revision: 1.4 $ \translated dump";
print LIBTYPES "\n * User types definitions";
print LIBTYPES "\n ******************************************************/";
print LIBTYPES "\n\n#include <postgres.h>\n";
print LIBTYPES "\n#define ADD_COMMA if(strcmp(result,\"\")!=0) strcat(result,\",\")\n";
# reading STDIN...
while (<>) {
# Comments start with -- in SQL
if(!/insert into.*\(.*#.*\)/i) {
s/#/--/;
}
# Convert numeric types
s/tinyint\(\d+\)/INT2/i;
s/smallint\(\d+\)/INT2/i;
s/mediumint\(\d+\)/INT4/i;
s/bigint\(\d+\)/INT8/i;
s/int\(\d+\)/INT4/i;
s/float(\(\d+,\d*\))/DECIMAL$1/i;
s/double precision/FLOAT8/i;
s/([\W])double(\(\d+,\d*\))/$1DECIMAL$2/i;
s/([\W])double[\W]/$1FLOAT8/i;
s/([\W])real[\W]/$1FLOAT8/i;
s/([\W])real(\(\d+,\d*\))/$1DECIMAL$2/i;
# Convert string types
s/\w*blob$chareg/text/i;
s/mediumtext$chareg/text/i;
s/tinytext$chareg/text/i;
s/(.*?char\(.*?\))$chareg/$1/i;
# Convert DATE types
s/datetime/TIMESTAMP/;
s/timestamp\(\d+\)/TIMESTAMP/i;
# small hack - convert "default" to uppercase, because below we
# enclose all lowercase words in double quotes
s/default/DEFAULT/;
# Change all AUTO_INCREMENT fields to SERIAL ones with a pre-defined sequence
if(/([\w\d]+)\sint.*auto_increment/i) {
$tmpseq=new_name("$table_name"."_"."$+"."_SEQ",28);
$seq{$table_name}=$tmpseq;
$primary{$table_name}=$+;
s/(int.*?) .*AUTO_INCREMENT/$1 DEFAULT nextval\('$tmpseq'\)/i;
#s/(int.*?)DEFAULT\s*?'.*?'(.*?)AUTO_INCREMENT/$1$2DEFAULT nextval\('$tmpseq'\)/i;
}
# Fix timestamps
s/0000-00-00/0001-01-01/g;
# may work wrong !!!
s/00000000000000/00010101000000/g;
s/(\d{8})(\d{6})/'$1 $2'/g;
#<Hackzone> ---------------------------------------------------
# convert UNSIGNED to CHECK constraints
if(/^\s+?([\w\d_]+).*?unsigned/i) {
$check.=",\n CHECK (\"$1\">=0)";
}
s/unsigned//i;
# Limited ENUM support - little heuristic
s/enum\('N','Y'\)/BOOL/i;
s/enum\('Y','N'\)/BOOL/i;
# ENUM support
if(/^\s+?([\w\d_]+).*?enum\((.*?)\)/i) {
my $enumlist=$2;
my @item;
$item[0]='';
while($enumlist=~s/'([\d\w_]+)'//i) {
$item[++$#item]=$1;
}
# forming identifier name
$typename=new_name('enum_'.$table_name.'_'.$item[1],28);
# $typename=lc('enum_'.$table_name.'_'.$item[1]);
# creating input type function
my $func_in="
int2* $typename"."_in (char *str) {
int2* result;
if(str==NULL)
return NULL;
result=(int2*)palloc(sizeof(int2));
*result=-1;";
for(my $i=0;$i<=$#item;$i++) {
$func_in.="
if(strcmp(str,\"$item[$i]\")==0) {
*result=$i;
}";
}
$func_in.="
if(*result == -1) {
elog(ERROR,\"$typename"."_in: incorrect input value\");
return NULL;
}
return (result);
}\n";
$types.="\n---";
$types.="\n--- Types for table ".uc($table_name);
$types.="\n---\n";
print LIBTYPES "\n/*";
print LIBTYPES "\n * Types for table ".uc($table_name);
print LIBTYPES "\n */\n";
$types.="\nCREATE FUNCTION $typename"."_in (opaque)
RETURNS $typename
AS '$libtypename'
LANGUAGE 'c'
WITH (ISCACHABLE);\n";
# creating output function
my $func_out="
char* $typename"."_out (int2 *outvalue) {
char* result;
if(outvalue==NULL)
return NULL;
result=(char*)palloc(10);
switch (*outvalue) {";
for(my $i=0;$i<=$#item;$i++) {
$func_out.="
case $i:
strcpy(result,\"$item[$i]\");
break;";
}
$func_out.="
default :
elog(ERROR,\"$typename"."_out: incorrect stored value\");
return NULL;
break;
}
return result;
}\n";
$func_out.="\nbool $typename"."_eq(int2* a, int2* b) {
return (*a==*b);
}
bool $typename"."_ne(int2* a, int2* b) {
return (*a!=*b);
}
bool $typename"."_lt(int2* a, int2* b) {
return (*a<*b);
}
bool $typename"."_le(int2* a, int2* b) {
return (*a<=*b);
}
bool $typename"."_gt(int2* a, int2* b) {
return (*a>*b);
}
bool $typename"."_ge(int2* a, int2* b) {
return (*a>=*b);
}\n";
$types.="\nCREATE FUNCTION $typename"."_out (opaque)
RETURNS opaque
AS '$libtypename'
LANGUAGE 'c'
WITH (ISCACHABLE);\n";
$types.="\nCREATE TYPE $typename (
internallength = 2,
input = $typename\_in,
output = $typename\_out
);\n";
$types.="\nCREATE FUNCTION $typename"."_eq ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE FUNCTION $typename"."_lt ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE FUNCTION $typename"."_le ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE FUNCTION $typename"."_gt ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE FUNCTION $typename"."_ge ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE FUNCTION $typename"."_ne ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE OPERATOR < (
leftarg = $typename,
rightarg = $typename,
-- negator = >=,
procedure = $typename"."_lt
);
CREATE OPERATOR <= (
leftarg = $typename,
rightarg = $typename,
-- negator = >,
procedure = $typename"."_le
);
CREATE OPERATOR = (
leftarg = $typename,
rightarg = $typename,
commutator = =,
-- negator = <>,
procedure = $typename"."_eq
);
CREATE OPERATOR >= (
leftarg = $typename,
rightarg = $typename,
negator = <,
procedure = $typename"."_ge
);
CREATE OPERATOR > (
leftarg = $typename,
rightarg = $typename,
negator = <=,
procedure = $typename"."_gt
);
CREATE OPERATOR <> (
leftarg = $typename,
rightarg = $typename,
negator = =,
procedure = $typename"."_ne
);\n";
print LIBTYPES $func_in;
print LIBTYPES $func_out;
s/enum\(.*?\)/$typename/i;
}
# SET support
if(/^\s+?([\w\d_]+).*?set\((.*?)\)/i) {
my $setlist=$2;
my @item;
$item[0]='';
my $maxlen=0; # maximal string length
while($setlist=~s/'([\d\w_]+)'//i) {
$item[++$#item]=$1;
$maxlen+=length($item[$#item])+1;
}
$maxlen+=1;
my $typesize=int($#item/8);
if($typesize<2) {
$typesize=2;
}
$internalsize=$typesize;
$typesize='int'.$typesize;
# $typename=lc('set_'.$table_name.'_'.$item[1]);
$typename=new_name('set_'.$table_name.'_'.$item[1],28);
# creating input type function
my $func_in="
$typesize* $typename"."_in (char *str) {
$typesize* result;
char* token;
if(str==NULL)
return NULL;
result=($typesize*)palloc(sizeof($typesize));
*result=0;
if(strcmp(str,\"\")==0)
return result;
for(token=strtok(str,\",\");token!=NULL;token=strtok(NULL,\",\")) {";
for(my $i=0,my $j=1;$i<=$#item;$i++,$j*=2) {
$func_in.="
if(strcmp(token,\"$item[$i]\")==0) {
*result|=$j;
continue;
}";
}
$func_in.="
}
if(*result == 0) {
elog(ERROR,\"$typename"."_in: incorrect input value\");
return NULL;
}
return (result);
}\n";
$types.="\n---";
$types.="\n--- Types for table ".uc($table_name);
$types.="\n---\n";
print LIBTYPES "\n/*";
print LIBTYPES "\n * Types for table ".uc($table_name);
print LIBTYPES "\n */\n";
$types.="\nCREATE FUNCTION $typename"."_in (opaque)
RETURNS $typename
AS '$libtypename'
LANGUAGE 'c';\n";
# creating output function
my $func_out="
char* $typename"."_out ($typesize *outvalue) {
char* result;
int i;
if(outvalue==NULL)
return NULL;
result=(char*)palloc($maxlen);
strcpy(result,\"\");
for(i=1;i<=2 << (sizeof(int2)*8);i*=2) {
switch (*outvalue & i) {";
for(my $i=0,$j=1;$i<=$#item;$i++,$j*=2) {
$func_out.="
case $j:";
if($item[$i] ne '') {
$func_out.="ADD_COMMA;";
}
$func_out.="strcat(result,\"$item[$i]\");
break;";
}
$func_out.="
default :
break;
}
}
return result;
}\n";
$func_out.="\nbool $typename"."_eq($typesize* a, $typesize* b) {
return (*a==*b);
}
$typesize find_in_set($typesize *a, $typesize *b) {
int i;
for(i=1;i<=sizeof($typesize)*8;i*=2) {
if(*a & *b) {
return 1;
}
}
return 0;
}
\n";
$types.="\nCREATE FUNCTION $typename"."_out (opaque)
RETURNS opaque
AS '$libtypename'
LANGUAGE 'c';\n";
$types.="\nCREATE TYPE $typename (
internallength = $internalsize,
input = $typename\_in,
output = $typename\_out
);\n";
$types.="\nCREATE FUNCTION $typename"."_eq ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE FUNCTION find_in_set ($typename,$typename)
RETURNS bool
AS '$libtypename'
LANGUAGE 'c';
CREATE OPERATOR = (
leftarg = $typename,
rightarg = $typename,
commutator = =,
procedure = $typename"."_eq
);
CREATE OPERATOR <> (
leftarg = $typename,
rightarg = $typename,
commutator = <>,
negator = =,
procedure = $typename"."_eq
);
\n";
print LIBTYPES $func_in;
print LIBTYPES $func_out;
s/set\(.*?\)/$typename/i;
}
# Change multy-field keys to multi-field indices
# MySQL Dump usually ends the CREATE TABLE statement like this:
# CREATE TABLE bids (
# ...
# PRIMARY KEY (bids_id),
# KEY offer_id (offer_id,user_id,the_time),
# KEY bid_value (bid_value)
# );
# We want to replace this with smth like
# CREATE TABLE bids (
# ...
# PRIMARY KEY (bids_id),
# );
# CREATE INDEX offer_id ON bids (offer_id,user_id,the_time);
# CREATE INDEX bid_value ON bids (bid_value);
if (s/CREATE TABLE (.*) /CREATE TABLE "$1" /i) {
if($oldtable ne $table_name) {
$oldtable=$table_name;
$j=-1;
$check='';
if($seq{$table_name} ne '') {
print "\n\n--";
print "\n-- Sequences for table ".uc($table_name);
print "\n--\n";
print "\nCREATE SEQUENCE ".$seq{$table_name}.";\n\n";
}
print $types;
$types='';
$dump=~s/,\n\).*;/\n\);/gmi;
# removing table options after closing bracket:
# ) TYPE=ISAM PACK_KEYS=1;
$dump=~s/\n\).*/\n\);/gmi;
print $dump;
$dump='';
}
$table_name=$1;
}
# output CHECK constraints instead UNSIGNED modifiers
if(/PRIMARY KEY \((.*)\)/i) {
my $tmpfld=$1;
$tmpfld=~s/,/","/;
s/PRIMARY KEY (\(.*\))/PRIMARY KEY \("$tmpfld"\)/i;
s/(PRIMARY KEY \(.*\)).*/$1$check\n/i;
}
if(/^\s*KEY ([\w\d_]+)\s*\((.*)\).*/i) {
my $tmpfld=$2;
$tmpfld=~s/\s*,\s*/","/;
$index{$table_name}[++$j]="CREATE INDEX $1_$table_name\_index ON \"$table_name\" (\"$tmpfld\");";
}
if(/^\s*UNIQUE ([\w\d_]+)\s*\((.*)\).*/i) {
my $tmpfld=$2;
$tmpfld=~s/,/","/;
$index{$table_name}[++$j]="CREATE UNIQUE INDEX $1_$table_name\_index ON \"$table_name\" (\"$tmpfld\");";
}
s/^\s*UNIQUE (.+).*(\(.*\)).*\n//i;
s/^\s*KEY (.+).*(\(.*\)).*\n//i;
if(!s/INSERT INTO\s+?(.*?)\s+?/INSERT INTO "$1" /i) {
# Quote lowercase identifiers in double quotes
while(!/^--/ && s/\s([A-Za-z_\d]+[a-z][A-Za-z_\d]*)\s/ "$+" /) {;}
}
#</Hackzone> --------------------------------------------------
$dump.=$_;
}
if($seq{$table_name} ne '') {
print "\n\n--";
print "\n-- Sequences for table ".uc($table_name);
print "\n--\n";
print "\nCREATE SEQUENCE ".$seq{$table_name}.";\n\n";
}
print $types;
$dump=~s/,\n\).*;/\n\);/gmi;
$dump=~s/\n\).*/\n\);/gmi;
print $dump;
# Output indices for tables
while(my($table,$ind)=each(%index)) {
print "\n\n--";
print "\n-- Indexes for table ".uc($table);
print "\n--\n";
for(my $i=0;$i<=$#{$ind};$i++) {
print "\n$ind->[$i]";
}
}
while(my($table,$s)=each(%seq)) {
print "\n\n--";
print "\n-- Sequences for table ".uc($table);
print "\n--\n";
# setting SERIAL sequence values right
if($primary{$table} ne '') {
print "\nSELECT SETVAL('".$seq{$table}."',(select case when max(\"".$primary{$table}."\")>0 then max(\"".$primary{$table}."\")+1 else 1 end from \"$table\"));";
}
}
print("\n\nCOMMIT;\n");
close(LIBTYPES);
open(MAKE,">Makefile");
print MAKE "#
# My2Pg \$Revision: 1.4 $ \translated dump
# Makefile
#
all: libtypes.so
libtypes.o: libtypes.c
gcc -c -fPIC -g -O libtypes.c
libtypes.so: libtypes.o
ld -Bshareable -o libtypes.so libtypes.o";
close(MAKE);
#
# Function generates unique identifier
# Args : template name, max length
# Globals: %identifier
#
sub new_name() {
my $name=lc(shift @_);
my $len=shift @_;
# truncate long names
if(length($name)>$len) {
$name=~s/(.{$len}).*/$1/i;
}
# find reserved identifiers
if($identifier{$name}!=1) {
$identifier{$name}=1;
return $name;
}
else {
for(my $i=1,my $tmpname=$name.$i;$identifier{$tmpname}!=1;) {
$tmpname=$name.$i
}
$identifier{$tmpname}=1;
return $tmpname;
}
die "Error during unique identifier generation :-(";
}
sub usage() {
print <<EOF
my2pg - MySQL to PostgreSQL database dump converter
Copyright (c) 2000 Max Rudensky <fonin\@ziet.zhitomir.ua>
Copyright (c) 2000 Valentine Danilchuk <valdan\@ziet.zhitomir.ua>
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
SYNTAX:
my2pg [-hn]
OPTIONS:
h - this help
n - convert *CHAR NOT NULL DEFAULT '' types to *CHAR NULL
EOF
;
}
=head1 NAME
my2pg - MySQL -> PostgreSQL dump conversion utility.
=head1 SYNTAX
mysqldump db | ./my2pg.pl [-n] > pgsqldump.sql
vi libtypes.c
make
psql database < pgsqldump.txt
where
=over 4
=item B<pgsqldump.sql>
- file suitable for loading into PostgreSQL.
=item B<libtypes.c>
- C source for emulated MySQL types (ENUM, SET) generated by B<my2pg>
=back
=head1 OVERVIEW
B<my2pg> utility attempts to convert MySQL database dump to Postgres's one.
B<my2pg> performs such conversions:
=over 4
=item Type conversion.
It tries to find proper Postgres
type for each column.
Unknown types are silently pushing to output dump;
ENUM and SET types implemented via user types
(C source for such types can be found in
B<libtypes.c> file);
=item Identifiers double-quotation.
All column and table
names should be enclosed to double-quotes to prevent
interferension with reserved words;
=item Converting
AUTO_INCREMENT fields to SERIAL. Actually, creating the sequence and
setting default value to nextval('seq'), well, you know :)
=item Converting
KEY(field) to CREATE INDEX i_field on table (field);
=item The same
for UNIQUE keys;
=item Indices
are creating AFTER rows insertion (to speed up the load);
=item Translates '#'
MySQL comments to ANSI SQL '--'
=back
It encloses dump in transaction block to prevent single errors
during data load.
=head1 COMMAND-LINE OPTIONS
My2pg takes the following command-line options:
=over 2
=item -n
Convert *CHAR DEFAULT '' NOT NULL types to *CHAR NULL.
Postgres can't load empty '' strings in NOT NULL fields.
=item -h
Show usage banner.
=back
=head1 SIDE EFFECTS
=over 4
=item creates
file B<libtypes.c> in current directory
overwriting existed file without any checks;
=item the same
for Makefile.
=back
=head1 BUGS
This program is still beta. Testers wanted.
Known bugs are:
=over 4
=item Poor doublequotation.
All identifiers such as table and column names should be enclosed in double
quotes. Program can't handle upper-case identifiers,
like DBA. Lower-case identifiers are OK.
=item SET type emulation is not full. LIKE operation on
SETs, raw integer input values should be implemented
=item B<Makefile> generated during output is
platform-dependent and surely works only on
Linux/gcc (FreeBSD/gcc probably works as well - not tested)
=item Generated B<libtypes.c> contain line
#include <postgres.h>
This file may be located not in standard compiler
include path, you need to check it before compiling.
=back
=head1 AUTHORS
B<(c) 2000 Maxim V. Rudensky (fonin@ziet.zhitomir.ua)>
B<(c) 2000 Valentine V. Danilchuk (valdan@ziet.zhitomir.ua)>
=head1 LICENSE
B<BSD>
=cut
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