4 # -------------------------------------------------------------------
5 # $Id: sqlt-diff,v 1.19 2007-10-24 10:55:44 schiffbruechige 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
54 --ignore-view-sql Ignore view SQL differences
55 --ignore-proc-sql Ignore procedure SQL differences
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 );
113 $VERSION = sprintf "%d.%02d", q$Revision: 1.19 $ =~ /(\d+)\.(\d+)/;
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 );
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 => $2 };
156 pod2usage( msg => "Unknown argument '$arg'" );
160 print STDERR "This code is experimental, currently the new code only supports MySQL diffing.\n To add support for other databases, please patch the relevant SQL::Translator::Producer:: module.\n If you need compatibility with the old sqlt-diff, please use sqlt-diff-old, and look into helping us make this one work for you.\n";
162 pod2usage(1) if $help || !@ARGV;
163 pod2usage('Please specify only two schemas to diff') if scalar @input > 2;
165 my $tr = SQL::Translator->new;
166 my @parsers = $tr->list_parsers;
167 my %valid_parsers = map { $_, 1 } @parsers;
170 print "\nParsers:\n", map { "\t$_\n" } sort @parsers;
175 pod2usage( msg => 'Too many file args' ) if @input > 2;
177 my ( $source_schema, $source_db, $target_schema, $target_db ) = map {
178 my $file = $_->{'file'};
179 my $parser = $_->{'parser'};
181 die "Unable to read file '$file'\n" unless -r $file;
182 die "'$parser' is an invalid parser\n" unless $valid_parsers{ $parser };
184 my $t = SQL::Translator->new(parser_args => {mysql_parser_version => $mysql_parser_version});
187 $t->parser( $parser ) or die $tr->error;
188 my $out = $t->translate( $file ) or die $tr->error;
189 my $schema = $t->schema;
190 unless ( $schema->name ) {
191 $schema->name( $file );
197 my $result = SQL::Translator::Diff::schema_diff($source_schema, $source_db,
198 $target_schema, $target_db,
199 { caseopt => $caseopt,
200 ignore_index_names => $ignore_index_names,
201 ignore_constraint_names => $ignore_constraint_names,
202 ignore_view_sql => $ignore_view_sql,
203 ignore_proc_sql => $ignore_proc_sql,
204 output_db => $output_db,
213 print "No differences found.";
216 # -------------------------------------------------------------------
217 # Bring out number weight & measure in a year of dearth.
219 # -------------------------------------------------------------------
225 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
229 SQL::Translator, L<http://sqlfairy.sourceforge.net>.