4 # -------------------------------------------------------------------
5 # Copyright (C) 2002-2009 The SQLFairy Authors
7 # This program is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU General Public License as
9 # published by the Free Software Foundation; version 2.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # -------------------------------------------------------------------
24 sqlt-diff - find the differences b/w two schemas
32 For a list of all valid parsers:
38 sqlt-diff [options] file_name1=parser1 file_name2=parser2
42 -d|--debug Show debugging info
43 -t|--trace Turn on tracing for Parse::RecDescent
44 -c|--case-insensitive Compare tables/columns case-insensitively
45 --ignore-index-names Ignore index name differences
46 --ignore-constraint-names Ignore constraint name differences
47 --mysql_parser_version=<#####> Specify a target MySQL parser version
48 for dealing with /*! comments
49 --output-db=<Producer> This Producer will be used instead of one
50 corresponding to parser1 to format output
52 --ignore-view-sql Ignore view SQL differences
53 --ignore-proc-sql Ignore procedure SQL differences
54 --no-batch-alters Do not clump multile alters to the same table into a
55 single ALTER TABLE statement where possible.
59 sqlt-diff is a utility for creating a file of SQL commands necessary to
60 transform the first schema provided to the second. While not yet
61 exhaustive in its ability to mutate the entire schema, it will report the
68 Using the Producer class of the target (second) schema, any tables missing
69 in the first schema will be generated in their entirety (fields, constraints,
72 =item * Missing/altered fields
74 Any fields missing or altered between the two schemas will be reported
77 ALTER TABLE <table_name>
79 [CHANGE <field_name> <datatype> (<size>)] ;
81 =item * Missing/altered indices
83 Any indices missing or of a different type or on different fields will be
84 indicated. Indices that should be dropped will be reported as such:
86 DROP INDEX <index_name> ON <table_name> ;
88 An index of a different type or on different fields will be reported as a
91 CREATE [<index_type>] INDEX [<index_name>] ON <table_name>
92 ( <field_name>[,<field_name>] ) ;
96 ALTER, CREATE, DROP statements are created by
97 SQL::Translator::Producer::*, see there for support/problems.
99 Currently (v0.0900), only MySQL is supported by this code.
103 # -------------------------------------------------------------------
109 use SQL::Translator::Diff;
110 use SQL::Translator::Schema::Constants;
112 use vars qw( $VERSION );
115 my ( @input, $list, $help, $debug, $trace, $caseopt, $ignore_index_names,
116 $ignore_constraint_names, $output_db, $mysql_parser_version,
117 $ignore_view_sql, $ignore_proc_sql, $no_batch_alters );
118 for my $arg ( @ARGV ) {
119 if ( $arg =~ m/^-?-l(ist)?$/ ) {
122 elsif ( $arg =~ m/^-?-h(elp)?$/ ) {
125 elsif ( $arg =~ m/^-?-d(ebug)?$/ ) {
128 elsif ( $arg =~ m/^-?-t(race)?$/ ) {
131 elsif ( $arg =~ m/^-?-c(ase-insensitive)?$/ ) {
134 elsif ( $arg =~ m/^--ignore-index-names$/ ) {
135 $ignore_index_names = 1;
137 elsif ( $arg =~ m/^--ignore-constraint-names$/ ) {
138 $ignore_constraint_names = 1;
140 elsif ( $arg =~ m/^--mysql-parser-version=(.+)$/ ) {
141 $mysql_parser_version = $1;
143 elsif ( $arg =~ m/^--output-db=(.+)$/ ) {
146 elsif ( $arg =~ m/^--ignore-view-sql$/ ) {
147 $ignore_view_sql = 1;
149 elsif ( $arg =~ m/^--ignore-proc-sql$/ ) {
150 $ignore_proc_sql = 1;
152 elsif ( $arg =~ m/^([^=]+)=(.+)$/ ) {
153 push @input, { file => $1, parser => $2 };
155 elsif ( $arg =~ m/^--no-batch-alters$/ ) {
156 $no_batch_alters = 1;
159 pod2usage( msg => "Unknown argument '$arg'" );
163 print STDERR <<'EOM';
164 This code is experimental, currently the new code only supports MySQL or
165 SQLite diffing. To add support for other databases, please patch the relevant
166 SQL::Translator::Producer:: module. If you need compatibility with the old
167 sqlt-diff, please use sqlt-diff-old, and look into helping us make this one
171 pod2usage(1) if $help || !@ARGV;
172 pod2usage('Please specify only two schemas to diff') if scalar @input > 2;
174 my $tr = SQL::Translator->new;
175 my @parsers = $tr->list_parsers;
176 my %valid_parsers = map { $_, 1 } @parsers;
179 print "\nParsers:\n", map { "\t$_\n" } sort @parsers;
184 pod2usage( msg => 'Too many file args' ) if @input > 2;
186 my ( $source_schema, $source_db, $target_schema, $target_db ) = map {
187 my $file = $_->{'file'};
188 my $parser = $_->{'parser'};
190 die "Unable to read file '$file'\n" unless -r $file;
191 die "'$parser' is an invalid parser\n" unless $valid_parsers{ $parser };
193 my $t = SQL::Translator->new(parser_args => {mysql_parser_version => $mysql_parser_version});
196 $t->parser( $parser ) or die $tr->error;
197 my $out = $t->translate( $file ) or die $tr->error;
198 my $schema = $t->schema;
199 unless ( $schema->name ) {
200 $schema->name( $file );
206 my $result = SQL::Translator::Diff::schema_diff($source_schema, $source_db,
207 $target_schema, $target_db,
208 { caseopt => $caseopt,
209 ignore_index_names => $ignore_index_names,
210 ignore_constraint_names => $ignore_constraint_names,
211 ignore_view_sql => $ignore_view_sql,
212 ignore_proc_sql => $ignore_proc_sql,
213 output_db => $output_db,
214 no_batch_alters => $no_batch_alters,
223 print "No differences found.";
226 # -------------------------------------------------------------------
227 # Bring out number weight & measure in a year of dearth.
229 # -------------------------------------------------------------------
235 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
239 SQL::Translator, L<http://sqlfairy.sourceforge.net>.