1 package SQL::Translator::Producer::SQLServer;
3 # -------------------------------------------------------------------
4 # Copyright (C) 2002-2009 SQLFairy Authors
6 # This program is free software; you can redistribute it and/or
7 # modify it under the terms of the GNU General Public License as
8 # published by the Free Software Foundation; version 2.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 # -------------------------------------------------------------------
23 SQL::Translator::Producer::SQLServer - MS SQLServer producer for SQL::Translator
29 my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' );
34 B<WARNING>B This is still fairly early code, basically a hacked version of the
35 Sybase Producer (thanks Sam, Paul and Ken for doing the real work ;-)
37 =head1 Extra Attributes
43 List of values for an enum field.
49 * !! Write some tests !!
50 * Reserved words list needs updating to SQLServer.
51 * Triggers, Procedures and Views DO NOT WORK
56 use vars qw[ $DEBUG $WARN $VERSION ];
58 $DEBUG = 1 unless defined $DEBUG;
61 use SQL::Translator::Schema::Constants;
62 use SQL::Translator::Utils qw(debug header_comment);
63 use SQL::Translator::Shim;
65 my $shim = SQL::Translator::Shim->new( quote_chars => ['[', ']'] );
71 #integer => 'numeric',
75 #varchar => 'varchar',
76 #varchar2 => 'varchar',
77 #timestamp => 'datetime',
79 #real => 'double precision',
82 #tinyint => 'smallint',
83 #float => 'double precision',
85 #boolean => 'varchar',
90 # If these datatypes have size appended the sql fails.
91 my @no_size = qw/tinyint smallint int integer bigint text bit image datetime/;
93 my $max_id_length = 128;
98 =head1 SQLServer Create Table Syntax
104 # -------------------------------------------------------------------
106 my $translator = shift;
107 $DEBUG = $translator->debug;
108 $WARN = $translator->show_warnings;
109 my $no_comments = $translator->no_comments;
110 my $add_drop_table = $translator->add_drop_table;
111 my $schema = $translator->schema;
113 %global_names = (); #reset
116 $output .= header_comment."\n" unless ($no_comments);
118 # Generate the DROP statements. We do this in one block here as if we
119 # have fkeys we need to drop in the correct order otherwise they will fail
120 # due to the dependancies the fkeys setup. (There is no way to turn off
121 # fkey checking while we sort the schema like MySQL's set
122 # foreign_key_checks=0)
123 # We assume the tables are in the correct order to set them up as you need
124 # to have created a table to fkey to it. So the reverse order should drop
125 # them properly, fingers crossed...
126 if ($add_drop_table) {
127 $output .= "--\n-- Drop tables\n--\n\n" unless $no_comments;
129 sort { $b->order <=> $a->order } $schema->get_tables
131 my $name = $table->name;
132 my $q_name = unreserve($name);
133 $output .= qq{IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') DROP TABLE $q_name;\n\n}
137 # Generate the CREATE sql
139 my @foreign_constraints = (); # these need to be added separately, as tables may not exist yet
141 for my $table ( $schema->get_tables ) {
142 my $table_name = $table->name or next;
143 my $table_name_ur = unreserve($table_name) || '';
145 my ( @comments, @field_defs, @index_defs, @constraint_defs );
147 push @comments, "\n\n--\n-- Table: $table_name_ur\n--"
150 push @comments, map { "-- $_" } $table->comments;
155 my %field_name_scope;
156 for my $field ( $table->get_fields ) {
157 my $field_name = $field->name;
158 my $field_name_ur = unreserve( $field_name );
159 my $field_def = qq["$field_name_ur"];
160 $field_def =~ s/\"//g;
161 if ( $field_def =~ /identity/ ){
162 $field_def =~ s/identity/pidentity/;
168 my $data_type = lc $field->data_type;
169 my $orig_data_type = $data_type;
170 my %extra = $field->extra;
171 my $list = $extra{'list'} || [];
172 # \todo deal with embedded quotes
173 my $commalist = join( ', ', map { qq['$_'] } @$list );
175 if ( $data_type eq 'enum' ) {
176 my $check_name = mk_name( $field_name . '_chk' );
177 push @constraint_defs,
178 "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))";
179 $data_type .= 'character varying';
181 elsif ( $data_type eq 'set' ) {
182 $data_type .= 'character varying';
184 elsif ( grep { $data_type eq $_ } qw/bytea blob clob/ ) {
185 $data_type = 'varbinary';
188 if ( defined $translate{ $data_type } ) {
189 $data_type = $translate{ $data_type };
192 warn "Unknown datatype: $data_type ",
193 "($table_name.$field_name)\n" if $WARN;
197 my $size = $field->size;
198 if ( grep $_ eq $data_type, @no_size) {
199 # SQLServer doesn't seem to like sizes on some datatypes
203 if ( $data_type =~ /numeric/ ) {
206 elsif ( $orig_data_type eq 'text' ) {
207 #interpret text fields as long varchars
211 $data_type eq 'varchar' &&
212 $orig_data_type eq 'boolean'
216 elsif ( $data_type eq 'varchar' ) {
221 $field_def .= " $data_type";
222 $field_def .= "($size)" if $size;
224 $field_def .= ' IDENTITY' if $field->is_auto_increment;
227 # Not null constraint
229 unless ( $field->is_nullable ) {
230 $field_def .= ' NOT NULL';
233 $field_def .= ' NULL' if $data_type ne 'bit';
239 SQL::Translator::Producer->_apply_default_value(
247 push @field_defs, $field_def;
251 # Constraint Declarations
253 my @constraint_decs = ();
254 for my $constraint ( $table->get_constraints ) {
255 my $name = $constraint->name || '';
256 my $name_ur = unreserve($name);
257 # Make sure we get a unique name
258 my $type = $constraint->type || NORMAL;
259 my @fields = map { unreserve( $_ ) }
261 my @rfields = map { unreserve( $_ ) }
262 $constraint->reference_fields;
266 if ( $type eq FOREIGN_KEY ) {
267 $name ||= mk_name( $table_name . '_fk' );
268 my $on_delete = uc ($constraint->on_delete || '');
269 my $on_update = uc ($constraint->on_update || '');
271 # The default implicit constraint action in MSSQL is RESTRICT
272 # but you can not specify it explicitly. Go figure :)
273 for ($on_delete, $on_update) {
274 undef $_ if $_ eq 'RESTRICT'
278 "ALTER TABLE $table_name_ur ADD CONSTRAINT $name_ur FOREIGN KEY".
279 ' (' . join( ', ', @fields ) . ') REFERENCES '.
280 unreserve($constraint->reference_table).
281 ' (' . join( ', ', @rfields ) . ')'
284 if ( $on_delete && $on_delete ne "NO ACTION") {
285 $c_def .= " ON DELETE $on_delete";
287 if ( $on_update && $on_update ne "NO ACTION") {
288 $c_def .= " ON UPDATE $on_update";
293 push @foreign_constraints, $c_def;
298 if ( $type eq PRIMARY_KEY ) {
299 $name = ($name ? unreserve($name) : mk_name( $table_name . '_pk' ));
301 "CONSTRAINT $name PRIMARY KEY ".
302 '(' . join( ', ', @fields ) . ')';
304 elsif ( $type eq UNIQUE ) {
305 $name = $name_ur || mk_name( $table_name . '_uc' );
307 "CONSTRAINT $name UNIQUE " .
308 '(' . join( ', ', @fields ) . ')';
310 push @constraint_defs, $c_def;
316 for my $index ( $table->get_indices ) {
317 my $idx_name = $index->name || mk_name($table_name . '_idx');
318 my $idx_name_ur = unreserve($idx_name);
320 "CREATE INDEX $idx_name_ur ON $table_name_ur (".
321 join( ', ', map unreserve($_), $index->fields ) . ");";
324 my $create_statement = "";
325 $create_statement .= qq[CREATE TABLE $table_name_ur (\n].
327 map { " $_" } @field_defs, @constraint_defs
332 $output .= join( "\n\n",
340 $output .= join ("\n", '', @foreign_constraints) if @foreign_constraints;
342 # create view/procedure are NOT prepended to the input $sql, needs
343 # to be filled in with the proper syntax
347 # Text of view is already a 'create view' statement so no need to
349 foreach ( $schema->get_views ) {
350 my $name = $_->name();
352 $output .= "--\n-- View: $name\n--\n\n" unless $no_comments;
353 my $text = $_->sql();
355 $output .= "$text\nGO\n";
358 # Text of procedure already has the 'create procedure' stuff
359 # so there is no need to do anything fancy. However, we should
360 # think about doing fancy stuff with granting permissions and
362 foreach ( $schema->get_procedures ) {
363 my $name = $_->name();
365 $output .= "--\n-- Procedure: $name\n--\n\n" unless $no_comments;
366 my $text = $_->sql();
368 $output .= "$text\nGO\n";
375 # -------------------------------------------------------------------
377 my ($name, $scope, $critical) = @_;
379 $scope ||= \%global_names;
380 if ( my $prev = $scope->{ $name } ) {
381 my $name_orig = $name;
382 $name .= sprintf( "%02d", ++$prev );
383 substr($name, $max_id_length - 3) = "00"
384 if length( $name ) > $max_id_length;
386 warn "The name '$name_orig' has been changed to ",
387 "'$name' to make it unique.\n" if $WARN;
389 $scope->{ $name_orig }++;
391 $name = substr( $name, 0, $max_id_length )
392 if ((length( $name ) > $max_id_length) && $critical);
394 return unreserve($name);
397 # -------------------------------------------------------------------
398 sub unreserve { $shim->quote($_[0]) }
402 # -------------------------------------------------------------------
412 Mark Addison E<lt>grommit@users.sourceforge.netE<gt> - Bulk of code from
413 Sybase producer, I just tweaked it for SQLServer. Thanks.