X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~yarrgweb/git?p=ypp-sc-tools.db-live.git;a=blobdiff_plain;f=yarrg%2Fdb-idempotent-populate;h=eb1a30b43a581047e330b4f226670083366e3fb0;hp=80ded466aefeb4ab89899fae5218dd7da2537e72;hb=a1d85248991a3b50783608d8d2ae35b4be29e82a;hpb=fceed60843f6a7c037b908eb529b542ad263c500

diff --git a/yarrg/db-idempotent-populate b/yarrg/db-idempotent-populate
index 80ded46..eb1a30b 100755
--- a/yarrg/db-idempotent-populate
+++ b/yarrg/db-idempotent-populate
@@ -1,25 +1,28 @@
 #!/usr/bin/perl -w
 #
+# Normally run from
+#  update-master-info
+#
 # usage: ./db-idempotent-populate <Oceanname>
 #  creates or updates OCEAN-Oceanname.db
-#  from master-master.txt
+#  from source-info.txt
 
-# This is part of ypp-sc-tools, a set of third-party tools for assisting
-# players of Yohoho Puzzle Pirates.
+# This is part of the YARRG website.  YARRG is a tool and website
+# for assisting players of Yohoho Puzzle Pirates.
 #
 # Copyright (C) 2009 Ian Jackson <ijackson@chiark.greenend.org.uk>
 #
 # This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
 #
 # 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.
+# GNU Affero General Public License for more details.
 #
-# You should have received a copy of the GNU General Public License
+# You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # Yohoho and Puzzle Pirates are probably trademarks of Three Rings and
@@ -33,196 +36,515 @@ use DBI;
 use Commods;
 use CommodsDatabase;
 
+my $trace=0;
+while (@ARGV and $ARGV[0] eq '-D') {
+	$trace++;
+	shift @ARGV;
+}
+
 @ARGV==1 or die;
 my ($oceanname) = @ARGV;
 
+$|=1;
+
 #---------- setup ----------
 
 parse_info_serverside();
-parse_info_serverside_ocean($oceanname);
-our $ocean= $oceans{$oceanname};
 
 db_setocean($oceanname);
 db_writer();
 db_connect();
 
-#---------- schema ----------
+$dbh->trace(1) if $trace;
+
+
+#---------- schema update code ----------
+
+our @need_compact;
+our @need_transfer_back;
+
+our %table;
+
+sub table ($$) {
+    my ($table, $fields) = @_;
+    table_maycompact($table,undef,undef,$fields);
+}
+
+sub table_maycompact ($$$$) {
+    my ($table, $cpact_idfield, $cpact_needupdates, $fields) = @_;
+
+    #----- parse $fields -----
+
+    my @want_fields;
+    my @want_field_specs;
+    my %want_field_specs;
+
+    foreach my $fspec (split /\n/, $fields) {
+	next unless $fspec =~ m/\S/;
+	if ($fspec =~ m/^\s*\+/) {
+	    push @want_field_specs, "\t".$';
+	    next;
+	} elsif ($fspec =~ m/^\s*(\w+)(\s+)(\w.*\S)\s*$/) {
+	    my ($f,$spaces,$rhs) = ($1,$2,$3);
+	    my $spec= "\t".$f.$spaces.$rhs;
+	    push @want_fields, $f;
+	    push @want_field_specs, $spec;
+	    $want_field_specs{$f}= $spec;
+	} else {
+	    die "$table $fspec ?";
+	}
+    }
+
+    my $want_field_specs= join ",\n", @want_field_specs;
+
+    #----- ensure table exists -----
+
+    db_doall(<<END);
+ CREATE TABLE IF NOT EXISTS $table (
+$want_field_specs
+	);
+END
+    my @need_recreate;
+
+    #----- check whether we need to remove autoinc -----
+
+    if ($fields !~ /\bautoinc/i) {
+	my $autoinc= $dbh->prepare(<<END);
+ SELECT sql FROM sqlite_master
+	WHERE type='table' and name=? and tbl_name=?
+END
+        $autoinc->execute($table,$table);
+	my ($sql)= $autoinc->fetchrow_array();
+	die unless defined $sql;
+	push @need_recreate, 'remove autoinc'
+	    if $sql =~ m/\bautoinc/i;
+    }
+
+    #----- check whether we need to add fields -----
+
+    my $check= $dbh->prepare("SELECT * FROM $table LIMIT 1");
+    $check->execute();
+    my %have_fields;
+    $have_fields{$_}=1 foreach @{ $check->{NAME_lc} };
+    $check->finish();
+
+    my @have_fields;
+    my @aside_fields;
+    my @have_field_specs;
+    my @aside_field_specs;
+
+    foreach my $f (@want_fields) {
+	if ($have_fields{$f}) {
+	    push @have_fields, $f;
+	    push @have_field_specs, $want_field_specs{$f};
+	} else {
+	    my $aside= $want_field_specs{$f};
+	    $aside =~ s/\bUNIQUE\b//i;
+	    $aside =~ s/\bNOT\s*NULL\b//i;
+	    $aside =~ s/\bPRIMARY\s*KEY\b//i;
+	    $aside =~ s/\s+$//;
+	    push @aside_fields, $f;
+	    push @aside_field_specs, $aside;
+	    push @need_recreate, "field $f";
+	}
+    }
+
+    #----- Do we need to recreate ? -----
+    if (!@need_recreate) {
+	$table{$table}= $table;
+	return;
+    }
+    #----- Yes, recreate: -----
+
+    print "    Recreating $table: ", join('; ',@need_recreate);
+    $table{$table}= "aside_$table";
+
+    my $have_fields= join ',', @have_fields;
+    my $aside_fields= join ',', @have_fields, @aside_fields;
+    my $have_field_specs= join ",\n", @have_field_specs;
+    my $aside_field_specs= join ",\n", @have_field_specs, @aside_field_specs;
+
+    db_doall(<<END);
+ CREATE TEMPORARY TABLE aside_$table (
+$aside_field_specs
+	);
+ INSERT INTO aside_$table ($have_fields) 
+	SELECT $have_fields FROM $table;
+
+ DROP TABLE $table;
+END
+
+    push @need_transfer_back, {
+	Table => $table,
+	Sql => <<END
+ CREATE TABLE $table (
+$want_field_specs
+	);
+
+ INSERT INTO $table ($aside_fields) SELECT $aside_fields FROM aside_$table;
+
+ DROP TABLE aside_$table;
+END
+    };
+    
+    #----- Do we need to compact ids ? -----
+    (print(".\n"), return) unless
+        defined $cpact_idfield
+	and grep { m/^remove autoinc/ } @need_recreate;
+    # yes:
+
+    print "; will compact.\n";
+    unshift @$cpact_needupdates, [ $table ], [ $cpact_idfield ];
+
+    push @need_compact, {
+	Table => $table,
+	Id => $cpact_idfield,
+	Updates => $cpact_needupdates,
+	Fields => [ @want_fields ],
+	FieldSpecs => $want_field_specs
+	};
+}
+
+
+#---------- actual schema ----------
 
 foreach my $bs (qw(buy sell)) {
-    db_doall(<<END)
- CREATE TABLE IF NOT EXISTS $bs (
-	commodid	INTEGER			NOT NULL,
-	islandid	INTEGER			NOT NULL,
-	stallid		INTEGER			NOT NULL,
-	price		INTEGER			NOT NULL,
-	qty		INTEGER			NOT NULL,
-	PRIMARY KEY (commodid, islandid, stallid)
- );
- CREATE INDEX IF NOT EXISTS ${bs}_by_island ON $bs (commodid, islandid, price);
- CREATE INDEX IF NOT EXISTS ${bs}_by_price  ON $bs (commodid, price, islandid);
+    table($bs,<<END);
+	commodid	INTEGER			NOT NULL
+	islandid	INTEGER			NOT NULL
+	stallid		INTEGER			NOT NULL
+	price		INTEGER			NOT NULL
+	qty		INTEGER			NOT NULL
+	+ PRIMARY KEY (commodid, islandid, stallid)
 END
-    ;
 }
 
-db_doall(<<END)
- CREATE TABLE IF NOT EXISTS commods (
-	commodid	INTEGER	PRIMARY KEY AUTOINCREMENT NOT NULL,
-	commodname	TEXT	UNIQUE		NOT NULL,
-	unitmass	INTEGER,
+table_maycompact('commods', 'commodid',
+		 [ [ qw(buy sell) ], [ qw(commodid) ],
+ ], <<END);
+	commodid	INTEGER	PRIMARY KEY	NOT NULL
+	commodname	TEXT	UNIQUE		NOT NULL
+	unitmass	INTEGER
 	unitvolume	INTEGER
- );
- CREATE TABLE IF NOT EXISTS islands (
-	islandid	INTEGER	PRIMARY KEY AUTOINCREMENT NOT NULL,
-	islandname	TEXT	UNIQUE		NOT NULL,
+	commodclassid	INTEGER			NOT NULL
+	ordval		INTEGER			NOT NULL
+	posinclass	INTEGER			NOT NULL
+	flags		TEXT			NOT NULL
+END
+
+table_maycompact('islands', 'islandid',
+		 [ [ qw(buy sell stalls uploads) ], [ qw(islandid) ], 
+		   [ qw(dists routes) ], [ qw(aiid biid) ], 
+ ], <<END);
+	islandid	INTEGER	PRIMARY KEY	NOT NULL
+	islandname	TEXT	UNIQUE		NOT NULL
 	archipelago	TEXT			NOT NULL
- );
- CREATE TABLE IF NOT EXISTS stalls (
-	stallid		INTEGER	PRIMARY KEY AUTOINCREMENT NOT NULL,
-	islandid	INTEGER			NOT NULL,
-	stallname	TEXT			NOT NULL,
-	UNIQUE (islandid, stallname)
- );
- CREATE TABLE IF NOT EXISTS uploads (
-	islandid	INTEGER PRIMARY KEY	NOT NULL,
-	timestamp	INTEGER			NOT NULL,
-	message		TEXT			NOT NULL,
-	clientspec	TEXT			NOT NULL,
-	serverspec	TEXT			NOT NULL
- );
- CREATE TABLE IF NOT EXISTS dists (
-	aiid		INTEGER			NOT NULL,
-	biid		INTEGER			NOT NULL,
-	dist		INTEGER			NOT NULL,
-	PRIMARY KEY (aiid, biid)
- );
 END
-    ;
 
-$dbh->commit;
+table('stalls', <<END);
+	stallid		INTEGER	PRIMARY KEY	NOT NULL
+	islandid	INTEGER			NOT NULL
+	stallname	TEXT			NOT NULL
+	+ UNIQUE (islandid, stallname)
+END
 
-#---------- commodity list ----------
+table('commodclasses', <<END);
+	commodclassid	INTEGER	PRIMARY KEY	NOT NULL
+	commodclass	TEXT	UNIQUE		NOT NULL
+	maxposinclass	INTEGER			NOT NULL
+END
 
-{
-    my $insert= $dbh->prepare(<<'END')
- INSERT OR IGNORE INTO commods
-     (unitmass,
-      unitvolume,
-      commodname)
-     VALUES (?,?,?);
+table('uploads', <<END);
+	islandid	INTEGER PRIMARY KEY	NOT NULL
+	timestamp	INTEGER			NOT NULL
+	message		TEXT			NOT NULL
+	clientspec	TEXT			NOT NULL
+	serverspec	TEXT			NOT NULL
 END
-    ;
-    my $update= $dbh->prepare(<<'END')
- UPDATE commods
-     SET unitmass = ?,
-         unitvolume = ?
-     WHERE commodname = ?
+
+table('dists', <<END);
+	aiid		INTEGER			NOT NULL
+	biid		INTEGER			NOT NULL
+	dist		INTEGER			NOT NULL
+	+ PRIMARY KEY (aiid, biid)
 END
-    ;
-    foreach my $commod (sort keys %commods) {
-	my $c= $commods{$commod};
-	my @qa= ($c->{Mass}, $c->{Volume}, $commod);
-	$insert->execute(@qa);
-	$update->execute(@qa);
-    }
-    $dbh->commit;
-}
 
-#---------- island list ----------
+table('routes', <<END);
+	aiid		INTEGER			NOT NULL
+	biid		INTEGER			NOT NULL
+	dist		INTEGER			NOT NULL
+	+ PRIMARY KEY (aiid, biid)
+END
 
-{
-    my $sth= $dbh->prepare(<<'END')
- INSERT OR IGNORE INTO islands (islandname, archipelago) VALUES (?, ?);
+table('vessels', <<END);
+	name		TEXT			NOT NULL
+	mass		INTEGER			NOT NULL
+	volume		INTEGER			NOT NULL
+	shot		INTEGER			NOT NULL
+	+ PRIMARY KEY (name)
 END
-    ;
-    foreach my $archname (sort keys %$ocean) {
-	my $arch= $ocean->{$archname};
-	foreach my $islandname (sort keys %$arch) {
-	    $sth->execute($islandname, $archname);
-	}
-    }
-    $dbh->commit;
+
+
+#---------- commodity list ----------
+
+sub commodsortkey ($) {
+    my ($commod) = @_;
+    return $commods{$commod}{Ordval} ||
+	   $commods{$commod}{ClassOrdval};
+}
+sub commods_ordered () {
+    sort {
+	commodsortkey($a) <=> commodsortkey($b);
+    } keys %commods;
 }
 
-#---------- routes ----------
+our %posincl;
 
 {
-    foreach my $islandname (sort keys %{ $route_mysteries{$oceanname} }) {
-	warn "$route_mysteries{$oceanname}{$islandname} routes".
-	    " for unknown island $islandname\n";
-    }
+    my %classorderedcount;
 
-    my $allroutes= $routes{$oceanname};
+    foreach my $cl (keys %commodclasses) {
+	$classorderedcount{$cl}= 0;
+    }
+    foreach my $commod (commods_ordered()) {
+	my $cl= $commods{$commod}{Class};
+	die "no class for commodity $commod" unless defined $cl;
 
-    my @propqueue= ();
+	my $clid= $commodclasses{$cl};
+	die "unknown class $cl for $commod ".(join '|', sort keys %commodclasses) unless defined $clid;
 
-    sub distance_set_propagate ($$$$) {
-	my ($lev, $start, $upto, $start2upto) = @_;
-	$allroutes->{$start}{$upto}= $start2upto;
-	push @propqueue, [ $lev, $start, $upto ];
+	if (defined $commods{$commod}{Ordval}) {
+	    $posincl{$commod}= ++$classorderedcount{$cl};
+	} else {
+	    $posincl{$commod}= 0;
+	}
     }
 
-    sub distance_propagate_now {
-	my ($lev, $start, $upto) = @_;
-	my $startref= $allroutes->{$start};
-	my $start2upto= $startref->{$upto};
-	my $uptoref=  $allroutes->{$upto};
-
-	for my $next (keys %$uptoref) {
-	    next if $next eq $upto;
-	    my $unext= $uptoref->{$next};
-	    next unless defined $unext;
-	    distance_update("${lev}p", $start, $next, $start2upto + $unext);
-	}
+    db_doall(<<END);
+ DELETE FROM $table{commodclasses};
+END
+    my $addclass= $dbh->prepare(<<END);
+ INSERT INTO $table{commodclasses}
+     (commodclassid, commodclass, maxposinclass)
+     VALUES (?,?,?)
+END
+    foreach my $cl (sort keys %commodclasses) {
+	my $clname= $cl;
+	$clname =~ s/_/ /g;
+	$addclass->execute($commodclasses{$cl}+1,
+			   ucfirst $clname,
+			   $classorderedcount{$cl});
     }
+}
+
+{
+    my @valuefields= qw(
+			unitmass
+			unitvolume
+			commodclassid
+			ordval
+			posinclass
+			flags
+			);
+    my $insert= $dbh->prepare("
+ INSERT OR IGNORE INTO $table{commods}
+      ( commodname,
+	".join(",
+	", @valuefields)." )
+     VALUES (?,".join(',', map {'?'} @valuefields).")
+");
+    my $update= $dbh->prepare("
+ UPDATE $table{commods}
+     SET ".join(",
+	", map { "$_ = ?" } @valuefields)."
+     WHERE commodname = ?
+");
+    foreach my $commod (commods_ordered()) {
+	my $c= $commods{$commod};
+        die "no mass for $commod" unless defined $c->{Mass};
+        die "no volume for $commod" unless defined $c->{Volume};
+	
+	my $cl= $c->{Class};
+	my $clid= $commodclasses{$cl}+1;
 
-    sub distance_update ($$$$) {
-	my ($lev, $x, $y, $newdist) = @_;
-	distance_update_one("${lev}x",$x,$y,$newdist);
-	distance_update_one("${lev}y",$y,$x,$newdist);
+	my @valuevalues= (
+			  $c->{Mass},
+			  $c->{Volume},
+			  $clid,
+			  commodsortkey($commod),
+			  $posincl{$commod},
+			  $c->{Flags}
+			  );
+	$insert->execute($commod, @valuevalues);
+	$update->execute(@valuevalues, $commod);
     }
 
-    sub distance_update_one ($$$$) {
-	my ($lev, $x, $y, $newdist) = @_;
-	my $xref= $allroutes->{$x};
-	my $currently= $xref->{$y};
-	return if defined($currently) and $currently <= $newdist;
-	distance_set_propagate("${lev}o",$x,$y,$newdist);
+    my $search= $dbh->prepare(<<END);
+ SELECT commodname,commodid FROM $table{commods};
+END
+    my %check;
+    foreach my $bs (qw(buy sell)) {
+	$check{$bs}= $dbh->prepare(<<END);
+ SELECT islandname,stallname,price,qty
+   FROM $table{$bs}
+   JOIN $table{stalls} USING (stallid)
+   JOIN $table{islands} ON ($bs.islandid = $table{islands}.islandid)
+   WHERE commodid = ? LIMIT 1
+END
     }
+    my $delete= $dbh->prepare(<<END);
+ DELETE FROM $table{commods} WHERE commodid = ?
+END
+    $search->execute();
+    my $any=0;
+    while (my $row= $search->fetchrow_hashref()) {
+	next if defined $commods{$row->{'commodname'}};
+	print $any++ ? '; ' : "    Dropping old commodities: ",
+	      $row->{'commodname'};
+	foreach my $bs (qw(buy sell)) {
+	    $check{$bs}->execute($row->{'commodid'});
+	    my $problem= $check{$bs}->fetchrow_hashref();
+	    if ($problem) {
+		print "\n";
+		die <<END
 
-    foreach my $xn (keys %$allroutes) {
-	my $routes= $allroutes->{$xn};
-	distance_set_propagate('0', $xn, $xn, 0);
-	foreach my $yn (keys %$routes) {
-	    distance_set_propagate('0', $yn, $yn, 0);
-	    distance_set_propagate('X', $xn, $yn, $routes->{$yn});
-	    distance_set_propagate('Y', $yn, $xn, $routes->{$yn});
+FATAL ERROR
+    Removed commodity
+       $row->{'commodid'}
+       $row->{'commodname'}
+    but
+       $bs
+       $problem->{'islandname'}
+       $problem->{'stallname'}
+       $problem->{'qty'} at $problem->{'price'}
+END
+            }
 	}
+	$delete->execute($row->{'commodid'});
+    }
+    print ".\n" if $any;
+}
+
+#---------- vessel types ----------
+{
+    my $idempotent= $dbh->prepare(<<END)
+ INSERT OR REPLACE INTO $table{vessels}
+	(name, shot, mass, volume)
+	VALUES (?,?,?,?)
+END
+    ;
+    foreach my $name (sort keys %vessels) {
+	my $v= $vessels{$name};
+	my $shotdamage= $shotname2damage{$v->{Shot}};
+	die "no shot damage for shot $v->{Shot} for vessel $name"
+	    unless defined $shotdamage;
+	my @qa= ($name, $shotdamage, map { $v->{$_} } qw(Mass Volume));
+	$idempotent->execute(@qa);
     }
-    my $ref;
-    while ($ref= shift @propqueue) {
-	distance_propagate_now(@$ref);
+}
+
+#---------- transfer data back from any recreated tables ----------
+
+foreach my $tb (@need_transfer_back) {
+    my $tab= $tb->{Table};
+    print "    Retransferring $tab...";
+
+    if (!eval {
+	db_doall($tb->{Sql});
+	1;
+    }) {
+	my $emsg= $@;
+	my $w=20;
+	print STDERR "\n=== $tab retransfer failed, dumping:\n";
+	my $dumph= $dbh->prepare("SELECT * FROM aside_$tab");
+	$dumph->execute();
+	my @cols= @{ $dumph->{NAME_lc} };
+	dumptab_head(\*STDERR,$w,\@cols);
+	my $row;
+	while ($row= $dumph->fetchrow_hashref()) {
+	    dumptab_row_hashref(\*STDERR,$w,\@cols,$row);
+	}
+	die "\n$emsg";
     }
+    print "\n";
+    $table{$tab}= $tab;
+}
+
+#---------- create indices ----------
 
+foreach my $bs (qw(buy sell)) {
     db_doall(<<END)
- DELETE FROM dists;
+ CREATE INDEX IF NOT EXISTS ${bs}_by_island ON $bs (commodid, islandid, price);
+ CREATE INDEX IF NOT EXISTS ${bs}_by_price  ON $bs (commodid, price, islandid);
 END
     ;
-    my $sth= $dbh->prepare(<<'END')
- INSERT INTO dists VALUES
-	((SELECT islandid FROM islands WHERE islandname == ?),
-	 (SELECT islandid FROM islands WHERE islandname == ?),
-	 ?);
+}
+
+db_check_referential_integrity(1);
+
+#---------- compact IDs ----------
+
+sub getminmax ($$$) {
+    my ($tab,$minmax,$f) = @_;
+    my $sth= $dbh->prepare("SELECT $minmax($f) FROM $tab");
+    $sth->execute();
+    my ($val)= $sth->fetchrow_array();
+    return defined($val) ? $val : '?';
+}
+
+foreach my $cp (@need_compact) {
+    print "    Compacting $cp->{Table}";
+    my $tab= $cp->{Table};
+    my $id= $cp->{Id};
+    my $tmp_field_specs= $cp->{FieldSpecs};
+    my $fields= join ',', @{$cp->{Fields}};
+    $tmp_field_specs =~ s/\bprimary key\b/UNIQUE/i or
+	die "$tab $tmp_field_specs ?";
+    db_doall(<<END);
+ CREATE TEMPORARY TABLE idlookup_$tab (
+	new_$id		INTEGER PRIMARY KEY NOT NULL,
+$tmp_field_specs
+ );
+ INSERT INTO idlookup_$tab ($fields)
+	SELECT $fields
+	FROM $tab;
 END
-    ;
-    foreach my $xn (keys %$allroutes) {
-	my $routes= $allroutes->{$xn};
-	foreach my $yn (keys %$routes) {
-	    $sth->execute($xn, $yn, $routes->{$yn});
+    my $oldmax= getminmax($tab,'max',$id);
+    my $offset= $oldmax+1;
+    
+    printf(" %s %s..%d=>1..%d:",
+	   $cp->{Id},
+	   getminmax($tab,'min',$id),
+	   $oldmax,
+	   getminmax("idlookup_$tab",'max',"new_$id"));
+    my @updates= @{ $cp->{Updates} };
+    while (@updates) {
+	my $utabs= shift @updates;
+	my $ufields= shift @updates;
+	foreach my $utab (@$utabs) {
+	    printf(" %s",$utab);
+	    my $fh= '.';
+	    foreach my $ufield (@$ufields) {
+		printf("%s%s",$fh,$ufield); $fh=',';
+		db_doall(<<END);
+ UPDATE $utab
+    SET $ufield = $offset +
+        (SELECT new_$id FROM idlookup_$tab
+          WHERE idlookup_$tab.$id = $utab.$ufield);
+ UPDATE $utab
+    SET $ufield = $ufield - $offset;
+END
+            }
 	}
     }
-    $dbh->commit();
-
-    # select ia.islandname, ib.islandname,dists.dist from dists, islands as ia on dists.aiid = ia.islandid, islands as ib on dists.biid = ib.islandid order by ia.islandname, ib.islandname;
+    print "\n";
 }
 
-__DATA__
+#---------- put it all into effect ----------
+
+db_chkcommit(1);
+
+{
+    local $dbh->{AutoCommit} = 1;
+    $dbh->do('VACUUM');
+}