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#!/usr/local/bin/perl |
#!/usr/bin/perl -w |
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# MySQL to PostgreSQL dump file converter |
# MySQL to PostgreSQL dump file converter |
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# |
# |
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# usage: |
# For usage: mysqldump --help |
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# mysqldump my_db_name | ./mysql2pgsql | psql pg_db_name |
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# |
# |
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# Convert mysqldump file (from MySQL) to something readable by psql ! |
# Convert mysqldump file (from MySQL) to something readable by psql ! |
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# |
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# homepage: http://www.rot13.org/~dpavlin/projects.html |
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# 1999-12-15 DbP -- Dobrica Pavlinusic <dpavlin@linux.hr> |
# 1999-12-15 DbP -- Dobrica Pavlinusic <dpavlin@rot13.org> |
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# 1999-12-26 DbP don't make serial from auto_increment, create all manually |
# 1999-12-26 DbP don't make serial from auto_increment, create all manually |
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# (to set start value right) |
# (to set start value right) |
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# 2000-01-11 DbP now creates sequences with correct value |
# 2000-01-11 DbP now creates sequences with correct value |
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# 2000-04-25 DbP import into CVS (at cvs.linux.hr) |
# 2000-04-25 DbP import into CVS (at cvs.linux.hr) |
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# 2001-01-29 tpo -- Tomas Pospisek <tpo@sourcepole.ch>: |
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# 1) make script comply to usage: |
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# 2) make script output to STDOUT instead of STERR |
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# 3) change verbosity behaveour |
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# 4) add debug option |
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# see rest of changelog at http://cvs.linux.hr/cvsweb.cgi/sql/mysql2pgsql |
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use DBI; |
use DBI; |
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if (!defined($ARGV[0]) || !defined($ARGV[1])) { |
$DEBUG =0; |
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print "Usage: $0 name_of_dump pg_database_name\n"; |
$VERBOSE =0; |
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sub usage { |
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print "Usage: $0 [-v|--h] mysql_dump_file [pg_database_name]\n\n"; |
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print "\t* mysql_dump_file is the filename of the mysql dump.\n"; |
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print "\t* pg_database_name is the name of the postgres database.\n"; |
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print "\t When ommitted standard output is used.\n"; |
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print "\t Combined with -v, it will tell you what SQL\n"; |
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print "\t commands are being executed\n"; |
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} |
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# if mysql_dump_file is not suplied or --h is supplied then we dump usage info |
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if (! defined($ARGV[0]) || $ARGV[0] eq "--h") { |
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usage(); |
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exit 1; |
exit 1; |
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} |
} |
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$dump="$ARGV[0]"; |
if ($ARGV[0] eq "-v") { |
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$database="$ARGV[1]"; |
$VERBOSE = 1; |
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# if verbose is set then user has to supply both arguments |
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if(! defined($ARGV[1]) || ! defined($ARGV[2])) { |
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usage(); |
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exit 1; |
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} else { |
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$dump="$ARGV[1]"; |
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$database="$ARGV[1]"; |
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} |
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} else { |
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$dump="$ARGV[0]"; |
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my $dbh = DBI->connect("DBI:Pg:dbname=template1","","") || die $DBI::errstr; |
# if database name is supplied then use it |
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$dbh->do("create database $database") || die $dbh->errstr(); |
if (defined($ARGV[1])) { |
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$dbh->disconnect; |
$database="$ARGV[1]"; |
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# else be verbose |
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} else { |
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$database=""; |
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$VERBOSE = 1; |
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} |
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} |
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my $dbh = DBI->connect("DBI:Pg:dbname=$database","","") || die $DBI::errstr; |
if ($database) { |
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my $dbh = DBI->connect("DBI:Pg:dbname=template1","","") || die $DBI::errstr; |
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$dbh->do("create database $database") || die $dbh->errstr(); |
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$dbh->disconnect; |
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$dbh = DBI->connect("DBI:Pg:dbname=$database","","") || die $DBI::errstr; |
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} |
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$create=0; # inside create table? |
$create=0; # inside create table? |
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$table=""; |
$table=""; |
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while(<DUMP>) { |
while(<DUMP>) { |
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chomp; |
chomp; |
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print "Processing line: $_\n" if $DEBUG; |
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# nuke comments or empty lines |
# nuke comments or empty lines |
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next if (/^#/ || /^$/); |
next if (/^#/ || /^$/); |
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# blob -> text |
# blob -> text |
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s/\w*blob/text/gi; |
s/\w*blob/text/gi; |
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# tinytext/mediumtext -> text |
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s/tinytext/text/gi; |
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s/mediumtext/text/gi; |
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# char -> varchar |
# char -> varchar |
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# PostgreSQL would otherwise pad with spaces as opposed |
# PostgreSQL would otherwise pad with spaces as opposed |
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s/date default '[^']+'/datetime/i; |
s/date default '[^']+'/datetime/i; |
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s/time default '[^']+'/datetime/i; |
s/time default '[^']+'/datetime/i; |
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# change not null datetime filend to null valid ones |
# change not null datetime field to null valid ones |
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# (to support remapping of "zaro time" to null |
# (to support remapping of "zero time" to null |
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s/datetime not null/datetime/i; |
s/datetime not null/datetime/i; |
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# nuke size of timestamp |
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s/timestamp\([^)]*\)/timestamp/i; |
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# double -> float8 |
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s/double\([^)]*\)/float8/i; |
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# add unique to definition of type (MySQL separates this) |
# add unique to definition of type (MySQL separates this) |
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if (/unique \w+ \((\w+)\)/i) { |
if (/unique \w+ \((\w+)\)/i) { |
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$sql=~s/($1)([^,]+)/$1$2 unique/gi; |
$sql=~s/($1)([^,]+)/$1$2 unique/i; |
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next; |
next; |
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} |
} |
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# FIX: unique for multipe columns (col1,col2) are unsupported! |
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next if (/unique/i); |
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# quote column names |
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s/(^\s*)(\S+)(\s*)/$1"$2"$3/gi if (!/key/i); |
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# remap colums with names of existing system attribute |
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if (/"oid"/i) { |
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s/"oid"/"_oid"/g; |
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print STDERR "WARNING: table $table uses column \"oid\" which is renamed to \"_oid\"\nYou should fix application manually! Press return to continue."; |
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my $wait=<STDIN>; |
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} |
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s/oid/_oid/i if (/key/i && /oid/i); # fix oid in key |
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} else { # not inside create table |
} else { # not inside create table |
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s/'0000-00-00 00:00:00'/null/gi; |
s/'0000-00-00 00:00:00'/null/gi; |
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s/'0000-00-00'/null/gi; |
s/'0000-00-00'/null/gi; |
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s/'00:00:00'/null/gi; |
s/'00:00:00'/null/gi; |
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s/([12]\d\d\d)([01]\d)([0-3]\d)([0-2]\d)([0-6]\d)([0-6]\d)/'$1-$2-$3 $4:$5:$6'/; |
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# protect ; in inserts |
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while (/('[^']*);([^']*)'/) { |
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s/('[^']*);([^']*')/$1 _dotcol_ $2/g; |
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} |
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} |
} |
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$sql.="$_"; |
$sql.="$_"; |
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($dosql,$sql)=split(/\);/,$sql); |
($dosql,$sql)=split(/\);/,$sql); |
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$dosql.=");"; # nuked by split, put it back! |
$dosql.=");"; # nuked by split, put it back! |
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if ("$dosql" ne "") { |
if ("$dosql" ne "") { |
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print STDERR "$dosql\n"; |
$dosql=~s/ _dotcol_ /;/g; |
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$dbh->do("$dosql") || die "do: '$dosql' ",$dbh->errstr(); |
print "$dosql\n" if $VERBOSE; |
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if($database) { |
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$dbh->do("$dosql") || die "do: '$dosql' ",$dbh->errstr(); |
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} |
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} else { |
} else { |
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print STDERR "empty sql!\n"; |
print STDERR "empty sql!\n"; |
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} |
} |
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($table,$field) = split(/\./,$seq); |
($table,$field) = split(/\./,$seq); |
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$sql="select max($field)+1 from $table"; |
$sql="select max($field)+1 from $table"; |
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print STDERR "$sql\n"; |
print "$sql\n" if $VERBOSE; |
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$sth = $dbh->prepare($sql) || die $dbh->errstr(); |
if($database){ |
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$sth->execute() || die $sth->errstr(); |
$sth = $dbh->prepare($sql) || die $dbh->errstr(); |
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($start) = $sth->fetchrow_array() || 1; |
$sth->execute() || die $sth->errstr(); |
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($start) = $sth->fetchrow_array() || 1; |
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} else { |
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print STDERR<<EOT |
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WARNING: Couldn't find the sequence start for the field $field |
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in table $table since you didn't give me an accessible DB. |
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Please verify the validity of the SQL command before inserting |
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into your DB. |
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EOT |
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; |
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$start = 1; |
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} |
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$seq="${table}_${field}_seq"; |
$seq="${table}_${field}_seq"; |
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$sql="create sequence $seq start $start increment 1"; |
$sql="create sequence $seq start $start increment 1"; |
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print STDERR "$sql\n"; |
print "$sql\n" if $VERBOSE; |
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$dbh->do("create sequence $seq start $start increment 1") || die $dbh->errstr(); |
if($database){ |
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$dbh->do("create sequence $seq start $start increment 1") || die $dbh->errstr(); |
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} |
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} |
} |
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print "\n"; |
print "\n"; |