4 # -------------------------------------------------------------------
5 # $Id: sqlt-diff,v 1.17 2007-03-19 17:15:54 duality72 Exp $
6 # -------------------------------------------------------------------
7 # Copyright (C) 2002-4 The SQLFairy Authors
9 # This program is free software; you can redistribute it and/or
10 # modify it under the terms of the GNU General Public License as
11 # published by the Free Software Foundation; version 2.
13 # This program is distributed in the hope that it will be useful, but
14 # WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 # General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write to the Free Software
20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 # -------------------------------------------------------------------
26 sqlt-diff - find the differences b/w two schemas
34 For a list of all valid parsers:
40 sqlt-diff [options] file_name1=parser1 file_name2=parser2
44 -d|--debug Show debugging info
45 -t|--trace Turn on tracing for Parse::RecDescent
46 -c|--case-insensitive Compare tables/columns case-insensitively
47 --ignore-index-names Ignore index name differences
48 --ignore-constraint-names Ignore constraint name differences
49 --mysql_parser_version=<#####> Specify a target MySQL parser version
50 for dealing with /*! comments
51 --output-db=<Producer> This Producer will be used instead of one
52 corresponding to parser1 to format output
57 sqlt-diff is a utility for creating a file of SQL commands necessary to
58 transform the first schema provided to the second. While not yet
59 exhaustive in its ability to mutate the entire schema, it will report the
66 Using the Producer class of the target (second) schema, any tables missing
67 in the first schema will be generated in their entirety (fields, constraints,
70 =item * Missing/altered fields
72 Any fields missing or altered between the two schemas will be reported
75 ALTER TABLE <table_name>
77 [CHANGE <field_name> <datatype> (<size>)] ;
79 =item * Missing/altered indices
81 Any indices missing or of a different type or on different fields will be
82 indicated. Indices that should be dropped will be reported as such:
84 DROP INDEX <index_name> ON <table_name> ;
86 An index of a different type or on different fields will be reported as a
89 CREATE [<index_type>] INDEX [<index_name>] ON <table_name>
90 ( <field_name>[,<field_name>] ) ;
94 "ALTER/DROP TABLE" and "CREATE INDEX" statements B<are not> generated by
95 the Producer, unfortunately, and may require massaging before being passed to
100 # -------------------------------------------------------------------
106 use SQL::Translator::Diff;
107 use SQL::Translator::Schema::Constants;
109 use vars qw( $VERSION );
110 $VERSION = sprintf "%d.%02d", q$Revision: 1.17 $ =~ /(\d+)\.(\d+)/;
112 my ( @input, $list, $help, $debug, $trace, $caseopt,$ignore_index_names,
113 $ignore_constraint_names, $output_db, $mysql_parser_version );
114 for my $arg ( @ARGV ) {
115 if ( $arg =~ m/^-?-l(ist)?$/ ) {
118 elsif ( $arg =~ m/^-?-h(elp)?$/ ) {
121 elsif ( $arg =~ m/^-?-d(ebug)?$/ ) {
124 elsif ( $arg =~ m/^-?-t(race)?$/ ) {
127 elsif ( $arg =~ m/^-?-c(ase-insensitive)?$/ ) {
130 elsif ( $arg =~ m/^--ignore-index-names$/ ) {
131 $ignore_index_names = 1;
133 elsif ( $arg =~ m/^--ignore-constraint-names$/ ) {
134 $ignore_constraint_names = 1;
136 elsif ( $arg =~ m/^--mysql-parser-version=(.+)$/ ) {
137 $mysql_parser_version = $1;
139 elsif ( $arg =~ m/^--output-db=(.+)$/ ) {
142 elsif ( $arg =~ m/^([^=]+)=(.+)$/ ) {
143 push @input, { file => $1, parser => $2 };
146 pod2usage( msg => "Unknown argument '$arg'" );
150 pod2usage(1) if $help || !@ARGV;
151 pod2usage('Please specify only two schemas to diff') if scalar @input > 2;
153 my $tr = SQL::Translator->new;
154 my @parsers = $tr->list_parsers;
155 my %valid_parsers = map { $_, 1 } @parsers;
158 print "\nParsers:\n", map { "\t$_\n" } sort @parsers;
163 pod2usage( msg => 'Too many file args' ) if @input > 2;
165 my ( $source_schema, $source_db, $target_schema, $target_db ) = map {
166 my $file = $_->{'file'};
167 my $parser = $_->{'parser'};
169 die "Unable to read file '$file'\n" unless -r $file;
170 die "'$parser' is an invalid parser\n" unless $valid_parsers{ $parser };
172 my $t = SQL::Translator->new(parser_args => {mysql_parser_version => $mysql_parser_version || 0});
175 $t->parser( $parser ) or die $tr->error;
176 my $out = $t->translate( $file ) or die $tr->error;
177 my $schema = $t->schema;
178 unless ( $schema->name ) {
179 $schema->name( $file );
185 my $result = SQL::Translator::Diff::schema_diff($source_schema, $source_db,
186 $target_schema, $target_db,
187 { caseopt => $caseopt,
188 ignore_index_names => $ignore_index_names,
189 ignore_constraint_names => $ignore_constraint_names,
190 output_db => $output_db,
199 print "No differences found.";
202 # -------------------------------------------------------------------
203 # Bring out number weight & measure in a year of dearth.
205 # -------------------------------------------------------------------
211 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
215 SQL::Translator, L<http://sqlfairy.sourceforge.net>.