4 # -------------------------------------------------------------------
5 # $Id: sqlt-diff,v 1.18 2007-03-21 15:20:50 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
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/DROP TABLE" and "CREATE INDEX" statements B<are not> generated by
97 the Producer, unfortunately, and may require massaging before being passed to
102 # -------------------------------------------------------------------
108 use SQL::Translator::Diff;
109 use SQL::Translator::Schema::Constants;
111 use vars qw( $VERSION );
112 $VERSION = sprintf "%d.%02d", q$Revision: 1.18 $ =~ /(\d+)\.(\d+)/;
114 my ( @input, $list, $help, $debug, $trace, $caseopt, $ignore_index_names,
115 $ignore_constraint_names, $output_db, $mysql_parser_version,
116 $ignore_view_sql, $ignore_proc_sql );
117 for my $arg ( @ARGV ) {
118 if ( $arg =~ m/^-?-l(ist)?$/ ) {
121 elsif ( $arg =~ m/^-?-h(elp)?$/ ) {
124 elsif ( $arg =~ m/^-?-d(ebug)?$/ ) {
127 elsif ( $arg =~ m/^-?-t(race)?$/ ) {
130 elsif ( $arg =~ m/^-?-c(ase-insensitive)?$/ ) {
133 elsif ( $arg =~ m/^--ignore-index-names$/ ) {
134 $ignore_index_names = 1;
136 elsif ( $arg =~ m/^--ignore-constraint-names$/ ) {
137 $ignore_constraint_names = 1;
139 elsif ( $arg =~ m/^--mysql-parser-version=(.+)$/ ) {
140 $mysql_parser_version = $1;
142 elsif ( $arg =~ m/^--output-db=(.+)$/ ) {
145 elsif ( $arg =~ m/^--ignore-view-sql$/ ) {
146 $ignore_view_sql = 1;
148 elsif ( $arg =~ m/^--ignore-proc-sql$/ ) {
149 $ignore_proc_sql = 1;
151 elsif ( $arg =~ m/^([^=]+)=(.+)$/ ) {
152 push @input, { file => $1, parser => $2 };
155 pod2usage( msg => "Unknown argument '$arg'" );
159 pod2usage(1) if $help || !@ARGV;
160 pod2usage('Please specify only two schemas to diff') if scalar @input > 2;
162 my $tr = SQL::Translator->new;
163 my @parsers = $tr->list_parsers;
164 my %valid_parsers = map { $_, 1 } @parsers;
167 print "\nParsers:\n", map { "\t$_\n" } sort @parsers;
172 pod2usage( msg => 'Too many file args' ) if @input > 2;
174 my ( $source_schema, $source_db, $target_schema, $target_db ) = map {
175 my $file = $_->{'file'};
176 my $parser = $_->{'parser'};
178 die "Unable to read file '$file'\n" unless -r $file;
179 die "'$parser' is an invalid parser\n" unless $valid_parsers{ $parser };
181 my $t = SQL::Translator->new(parser_args => {mysql_parser_version => $mysql_parser_version});
184 $t->parser( $parser ) or die $tr->error;
185 my $out = $t->translate( $file ) or die $tr->error;
186 my $schema = $t->schema;
187 unless ( $schema->name ) {
188 $schema->name( $file );
194 my $result = SQL::Translator::Diff::schema_diff($source_schema, $source_db,
195 $target_schema, $target_db,
196 { caseopt => $caseopt,
197 ignore_index_names => $ignore_index_names,
198 ignore_constraint_names => $ignore_constraint_names,
199 ignore_view_sql => $ignore_view_sql,
200 ignore_proc_sql => $ignore_proc_sql,
201 output_db => $output_db,
210 print "No differences found.";
213 # -------------------------------------------------------------------
214 # Bring out number weight & measure in a year of dearth.
216 # -------------------------------------------------------------------
222 Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
226 SQL::Translator, L<http://sqlfairy.sourceforge.net>.