# vim: set ft=perl:
# -------------------------------------------------------------------
-# $Id: sqlt-diff,v 1.1 2003-10-17 16:42:14 kycl4rk Exp $
+# $Id$
# -------------------------------------------------------------------
-# Copyright (C) 2002 The SQLFairy Authors
+# Copyright (C) 2002-2009 The SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
To diff two schemas:
- sqlt-diff [options] file1=parser file2=parser
+ sqlt-diff [options] file_name1=parser1 file_name2=parser2
Options:
-d|--debug Show debugging info
+ -t|--trace Turn on tracing for Parse::RecDescent
+ -c|--case-insensitive Compare tables/columns case-insensitively
+ --ignore-index-names Ignore index name differences
+ --ignore-constraint-names Ignore constraint name differences
+ --mysql_parser_version=<#####> Specify a target MySQL parser version
+ for dealing with /*! comments
+ --output-db=<Producer> This Producer will be used instead of one
+ corresponding to parser1 to format output
+ for new tables
+ --ignore-view-sql Ignore view SQL differences
+ --ignore-proc-sql Ignore procedure SQL differences
+ --no-batch-alters Do not clump multile alters to the same table into a
+ single ALTER TABLE statement where possible.
=head1 DESCRIPTION
-This script is part of the SQL Fairy project. It will find the
-differences between two schemas.
+sqlt-diff is a utility for creating a file of SQL commands necessary to
+transform the first schema provided to the second. While not yet
+exhaustive in its ability to mutate the entire schema, it will report the
+following
+
+=over
+
+=item * New tables
+
+Using the Producer class of the target (second) schema, any tables missing
+in the first schema will be generated in their entirety (fields, constraints,
+indices).
+
+=item * Missing/altered fields
+
+Any fields missing or altered between the two schemas will be reported
+as:
+
+ ALTER TABLE <table_name>
+ [DROP <field_name>]
+ [CHANGE <field_name> <datatype> (<size>)] ;
+
+=item * Missing/altered indices
+
+Any indices missing or of a different type or on different fields will be
+indicated. Indices that should be dropped will be reported as such:
+
+ DROP INDEX <index_name> ON <table_name> ;
+
+An index of a different type or on different fields will be reported as a
+new index as such:
+
+ CREATE [<index_type>] INDEX [<index_name>] ON <table_name>
+ ( <field_name>[,<field_name>] ) ;
+
+=back
+
+ALTER, CREATE, DROP statements are created by
+SQL::Translator::Producer::*, see there for support/problems.
+
+Currently (v0.0900), only MySQL is supported by this code.
=cut
use Pod::Usage;
use Data::Dumper;
use SQL::Translator;
+use SQL::Translator::Diff;
+use SQL::Translator::Schema::Constants;
use vars qw( $VERSION );
-$VERSION = sprintf "%d.%02d", q$Revision: 1.1 $ =~ /(\d+)\.(\d+)/;
+$VERSION = '1.99';
-my ( @input, $list, $help, $debug );
+my ( @input, $list, $help, $debug, $trace, $caseopt, $ignore_index_names,
+ $ignore_constraint_names, $output_db, $mysql_parser_version,
+ $ignore_view_sql, $ignore_proc_sql, $no_batch_alters );
for my $arg ( @ARGV ) {
if ( $arg =~ m/^-?-l(ist)?$/ ) {
$list = 1;
elsif ( $arg =~ m/^-?-d(ebug)?$/ ) {
$debug = 1;
}
+ elsif ( $arg =~ m/^-?-t(race)?$/ ) {
+ $trace = 1;
+ }
+ elsif ( $arg =~ m/^-?-c(ase-insensitive)?$/ ) {
+ $caseopt = 1;
+ }
+ elsif ( $arg =~ m/^--ignore-index-names$/ ) {
+ $ignore_index_names = 1;
+ }
+ elsif ( $arg =~ m/^--ignore-constraint-names$/ ) {
+ $ignore_constraint_names = 1;
+ }
+ elsif ( $arg =~ m/^--mysql-parser-version=(.+)$/ ) {
+ $mysql_parser_version = $1;
+ }
+ elsif ( $arg =~ m/^--output-db=(.+)$/ ) {
+ $output_db = $1;
+ }
+ elsif ( $arg =~ m/^--ignore-view-sql$/ ) {
+ $ignore_view_sql = 1;
+ }
+ elsif ( $arg =~ m/^--ignore-proc-sql$/ ) {
+ $ignore_proc_sql = 1;
+ }
elsif ( $arg =~ m/^([^=]+)=(.+)$/ ) {
push @input, { file => $1, parser => $2 };
}
+ elsif ( $arg =~ m/^--no-batch-alters$/ ) {
+ $no_batch_alters = 1;
+ }
else {
pod2usage( msg => "Unknown argument '$arg'" );
}
}
-pod2usage(1) if $help;
+print STDERR <<'EOM';
+This code is experimental, currently the new code only supports MySQL or
+SQLite diffing. To add support for other databases, please patch the relevant
+SQL::Translator::Producer:: module. 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
+EOM
+
+pod2usage(1) if $help || !@ARGV;
+pod2usage('Please specify only two schemas to diff') if scalar @input > 2;
my $tr = SQL::Translator->new;
my @parsers = $tr->list_parsers;
pod2usage( msg => 'Too many file args' ) if @input > 2;
-my ( $schema1, $schema2 );
-my $i = 1;
-for my $in ( @input ) {
- my $file = $in->{'file'};
- my $parser = $in->{'parser'};
+my ( $source_schema, $source_db, $target_schema, $target_db ) = map {
+ my $file = $_->{'file'};
+ my $parser = $_->{'parser'};
die "Unable to read file '$file'\n" unless -r $file;
die "'$parser' is an invalid parser\n" unless $valid_parsers{ $parser };
- my $t = SQL::Translator->new;
+ my $t = SQL::Translator->new(parser_args => {mysql_parser_version => $mysql_parser_version});
$t->debug( $debug );
+ $t->trace( $trace );
$t->parser( $parser ) or die $tr->error;
- $t->producer( 'YAML' ) or die $tr->error;
my $out = $t->translate( $file ) or die $tr->error;
my $schema = $t->schema;
unless ( $schema->name ) {
$schema->name( $file );
}
- if ( $i == 1 ) {
- $schema1 = $schema;
- }
- else {
- $schema2 = $schema;
- }
- $i++;
-}
-
-#print "Schemas =\n", Dumper( \@schemas ), "\n" if $debug;
-
-my @matrix = ( [ $schema1, $schema2 ], [ $schema2, $schema1 ] );
-
-my @diffs;
-for my $rec ( @matrix ) {
- my $s1 = $rec->[0];
- my $s2 = $rec->[1];
- my $s1_name = $s1->name;
- my $s2_name = $s2->name;
- print "Schema1 = '$s1_name', schema2 = '$s2_name'\n" if $debug;
- for my $t1 ( $s1->get_tables ) {
- my $t1_name = $t1->name;
- my $t2 = $s2->get_table( $t1_name );
-
- print "Checking '$s1_name' table '$t1_name'\n" if $debug;
- unless ( $t2 ) {
- push @diffs, "Schema '$s2_name' is missing table '$t1_name'";
- next;
- }
-
- my $t2_name = $t2->name;
- for my $t1_field ( $t1->get_fields ) {
- my $fname = $t1_field->name;
- my $t2_field = $t2->get_field( $fname );
- my $f1_full_name = "$s1_name.$t1_name.$fname";
- print "Checking '$f1_full_name'\n" if $debug;
-
- unless ( $t2_field ) {
- push @diffs,
- "Table '$s2_name.$t2_name' is missing field '$fname'";
- next;
- }
-
- my $f2_full_name = "$s2_name.$t2_name.$fname";
- my $t1_type = $t1_field->data_type;
- my $t1_size = $t1_field->size;
- my $t2_type = $t2_field->data_type;
- my $t2_size = $t2_field->size;
-
- if ( $t1_type ne $t2_type ) {
- push @diffs, "'$f1_full_name' type = '$t1_type' and ".
- "'$f2_full_name' type = '$t2_type'";
- }
-
- if ( defined $t1_size && ( $t1_size ne $t2_size ) ) {
- push @diffs, "'$f1_full_name' size = '$t1_size' and ".
- "'$f2_full_name' size = '$t2_size'";
- }
- }
- }
-}
-
-if ( @diffs ) {
- print "Diffs\n-----\n";
- print join( "\n", @diffs, '' );
+ ($schema, $parser);
+} @input;
+
+my $result = SQL::Translator::Diff::schema_diff($source_schema, $source_db,
+ $target_schema, $target_db,
+ { caseopt => $caseopt,
+ ignore_index_names => $ignore_index_names,
+ ignore_constraint_names => $ignore_constraint_names,
+ ignore_view_sql => $ignore_view_sql,
+ ignore_proc_sql => $ignore_proc_sql,
+ output_db => $output_db,
+ no_batch_alters => $no_batch_alters,
+ debug => $debug,
+ trace => $trace });
+if($result)
+{
+ print $result;
}
-else {
- print "There were no differences.\n";
+else
+{
+ print "No differences found.";
}
# -------------------------------------------------------------------
projects / dbsrgits/SQL-Translator.git / blobdiff