1 package SQL::Translator::Producer::SQLServer;
3 # -------------------------------------------------------------------
4 # $Id: SQLServer.pm,v 1.7 2007-03-14 16:56:33 duality72 Exp $
5 # -------------------------------------------------------------------
6 # Copyright (C) 2002-4 SQLFairy Authors
8 # This program is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU General Public License as
10 # published by the Free Software Foundation; version 2.
12 # This program is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 # General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 # -------------------------------------------------------------------
25 SQL::Translator::Producer::SQLServer - MS SQLServer producer for SQL::Translator
31 my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' );
36 B<WARNING>B This is still fairly early code, basically a hacked version of the
37 Sybase Producer (thanks Sam, Paul and Ken for doing the real work ;-)
39 =head1 Extra Attributes
45 List of values for an enum field.
51 * !! Write some tests !!
52 * Reserved words list needs updating to SQLServer.
53 * Triggers, Procedures and Views havn't been tested at all.
58 use vars qw[ $DEBUG $WARN $VERSION ];
59 $VERSION = sprintf "%d.%02d", q$Revision: 1.7 $ =~ /(\d+)\.(\d+)/;
60 $DEBUG = 1 unless defined $DEBUG;
63 use SQL::Translator::Schema::Constants;
64 use SQL::Translator::Utils qw(debug header_comment);
70 #integer => 'numeric',
74 #varchar => 'varchar',
75 #varchar2 => 'varchar',
76 #timestamp => 'datetime',
78 #real => 'double precision',
81 #tinyint => 'smallint',
82 #float => 'double precision',
84 #boolean => 'varchar',
89 # TODO - This is still the Sybase list!
90 my %reserved = map { $_, 1 } qw[
91 ALL ANALYSE ANALYZE AND ANY AS ASC
93 CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS
94 CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER
95 DEFAULT DEFERRABLE DESC DISTINCT DO
97 FALSE FOR FOREIGN FREEZE FROM FULL
99 ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL
100 JOIN LEADING LEFT LIKE LIMIT
101 NATURAL NEW NOT NOTNULL NULL
102 OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS
103 PRIMARY PUBLIC REFERENCES RIGHT
104 SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE
105 UNION UNIQUE USER USING VERBOSE WHEN WHERE
108 # If these datatypes have size appended the sql fails.
109 my @no_size = qw/tinyint smallint int integer bigint text bit image datetime/;
111 my $max_id_length = 128;
112 my %used_identifiers = ();
119 =head1 SQLServer Create Table Syntax
125 # -------------------------------------------------------------------
127 my $translator = shift;
128 $DEBUG = $translator->debug;
129 $WARN = $translator->show_warnings;
130 my $no_comments = $translator->no_comments;
131 my $add_drop_table = $translator->add_drop_table;
132 my $schema = $translator->schema;
135 $output .= header_comment."\n" unless ($no_comments);
137 # Generate the DROP statements. We do this in one block here as if we
138 # have fkeys we need to drop in the correct order otherwise they will fail
139 # due to the dependancies the fkeys setup. (There is no way to turn off
140 # fkey checking while we sort the schema like MySQL's set
141 # foreign_key_checks=0)
142 # We assume the tables are in the correct order to set them up as you need
143 # to have created a table to fkey to it. So the reverse order should drop
144 # them properly, fingers crossed...
145 if ($add_drop_table) {
146 $output .= "--\n-- Drop tables\n--\n\n" unless $no_comments;
148 sort { $b->order <=> $a->order } $schema->get_tables
150 my $name = unreserve($table->name);
151 $output .= qq{IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') DROP TABLE $name;\n\n}
155 # Generate the CREATE sql
156 for my $table ( $schema->get_tables ) {
157 my $table_name = $table->name or next;
158 $table_name = mk_name( $table_name, '', undef, 1 );
159 my $table_name_ur = unreserve($table_name) || '';
161 my ( @comments, @field_defs, @index_defs, @constraint_defs );
163 push @comments, "\n\n--\n-- Table: $table_name_ur\n--"
166 push @comments, map { "-- $_" } $table->comments;
171 my %field_name_scope;
172 for my $field ( $table->get_fields ) {
173 my $field_name = mk_name(
174 $field->name, '', \%field_name_scope, undef,1
176 my $field_name_ur = unreserve( $field_name, $table_name );
177 my $field_def = qq["$field_name_ur"];
178 $field_def =~ s/\"//g;
179 if ( $field_def =~ /identity/ ){
180 $field_def =~ s/identity/pidentity/;
186 my $data_type = lc $field->data_type;
187 my $orig_data_type = $data_type;
188 my %extra = $field->extra;
189 my $list = $extra{'list'} || [];
190 # \todo deal with embedded quotes
191 my $commalist = join( ', ', map { qq['$_'] } @$list );
194 if ( $data_type eq 'enum' ) {
195 my $check_name = mk_name(
196 $table_name.'_'.$field_name, 'chk' ,undef, 1
198 push @constraint_defs,
199 "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))";
200 $data_type .= 'character varying';
202 elsif ( $data_type eq 'set' ) {
203 $data_type .= 'character varying';
206 if ( defined $translate{ $data_type } ) {
207 $data_type = $translate{ $data_type };
210 warn "Unknown datatype: $data_type ",
211 "($table_name.$field_name)\n" if $WARN;
215 my $size = $field->size;
216 if ( grep $_ eq $data_type, @no_size) {
217 # SQLServer doesn't seem to like sizes on some datatypes
221 if ( $data_type =~ /numeric/ ) {
224 elsif ( $orig_data_type eq 'text' ) {
225 #interpret text fields as long varchars
229 $data_type eq 'varchar' &&
230 $orig_data_type eq 'boolean'
234 elsif ( $data_type eq 'varchar' ) {
239 $field_def .= " $data_type";
240 $field_def .= "($size)" if $size;
242 $field_def .= ' IDENTITY' if $field->is_auto_increment;
245 # Not null constraint
247 unless ( $field->is_nullable ) {
248 $field_def .= ' NOT NULL';
251 $field_def .= ' NULL' if $data_type ne 'bit';
257 my $default = $field->default_value;
258 if ( defined $default ) {
259 $field_def .= sprintf( ' DEFAULT %s',
260 ( $field->is_auto_increment && $seq_name )
261 ? qq[nextval('"$seq_name"'::text)] :
262 ( $default =~ m/null/i ) ? 'NULL' : "'$default'"
266 push @field_defs, $field_def;
270 # Constraint Declarations
272 my @constraint_decs = ();
274 for my $constraint ( $table->get_constraints ) {
275 my $name = $constraint->name || '';
276 # Make sure we get a unique name
277 $name = mk_name( $name, undef, undef, 1 ) if $name;
278 my $type = $constraint->type || NORMAL;
279 my @fields = map { unreserve( $_, $table_name ) }
281 my @rfields = map { unreserve( $_, $table_name ) }
282 $constraint->reference_fields;
286 if ( $type eq PRIMARY_KEY ) {
287 $name ||= mk_name( $table_name, 'pk', undef,1 );
289 "CONSTRAINT $name PRIMARY KEY ".
290 '(' . join( ', ', @fields ) . ')';
292 elsif ( $type eq FOREIGN_KEY ) {
293 $name ||= mk_name( $table_name, 'fk', undef,1 );
294 #$name = mk_name( ($name || $table_name), 'fk', undef,1 );
296 "CONSTRAINT $name FOREIGN KEY".
297 ' (' . join( ', ', @fields ) . ') REFERENCES '.
298 $constraint->reference_table.
299 ' (' . join( ', ', @rfields ) . ')';
300 my $on_delete = $constraint->on_delete;
301 if ( defined $on_delete && $on_delete ne "NO ACTION") {
302 $c_def .= " ON DELETE $on_delete";
304 my $on_update = $constraint->on_update;
305 if ( defined $on_update && $on_update ne "NO ACTION") {
306 $c_def .= " ON UPDATE $on_update";
309 elsif ( $type eq UNIQUE ) {
312 $name || ++$c_name_default,undef, 1
315 "CONSTRAINT $name UNIQUE " .
316 '(' . join( ', ', @fields ) . ')';
318 push @constraint_defs, $c_def;
324 for my $index ( $table->get_indices ) {
325 my $idx_name = $index->name || mk_name($table_name,'idx',undef,1);
327 "CREATE INDEX $idx_name ON $table_name (".
328 join( ', ', $index->fields ) . ");";
331 my $create_statement = "";
332 $create_statement .= qq[CREATE TABLE $table_name_ur (\n].
334 map { " $_" } @field_defs, @constraint_defs
339 $output .= join( "\n\n",
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";
371 # Warn out how we messed with the names.
374 warn "Truncated " . keys( %truncated ) . " names:\n";
375 warn "\t" . join( "\n\t", sort keys %truncated ) . "\n";
378 warn "Encounted " . keys( %unreserve ) .
379 " unsafe names in schema (reserved or invalid):\n";
380 warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n";
387 # -------------------------------------------------------------------
389 my $basename = shift || '';
390 my $type = shift || '';
391 my $scope = shift || '';
392 my $critical = shift || '';
393 my $basename_orig = $basename;
395 ? $max_id_length - (length($type) + 1)
397 $basename = substr( $basename, 0, $max_name )
398 if length( $basename ) > $max_name;
399 my $name = $type ? "${type}_$basename" : $basename;
401 if ( $basename ne $basename_orig and $critical ) {
402 my $show_type = $type ? "+'$type'" : "";
403 warn "Truncating '$basename_orig'$show_type to $max_id_length ",
404 "character limit to make '$name'\n" if $WARN;
405 $truncated{ $basename_orig } = $name;
408 $scope ||= \%global_names;
409 if ( my $prev = $scope->{ $name } ) {
410 my $name_orig = $name;
411 $name .= sprintf( "%02d", ++$prev );
412 substr($name, $max_id_length - 3) = "00"
413 if length( $name ) > $max_id_length;
415 warn "The name '$name_orig' has been changed to ",
416 "'$name' to make it unique.\n" if $WARN;
418 $scope->{ $name_orig }++;
420 $name = substr( $name, 0, $max_id_length )
421 if ((length( $name ) > $max_id_length) && $critical);
426 # -------------------------------------------------------------------
428 my $name = shift || '';
429 my $schema_obj_name = shift || '';
430 my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : '';
432 # also trap fields that don't begin with a letter
433 return $name if !$reserved{ uc $name } && $name =~ /^[a-z]/i;
435 if ( $schema_obj_name ) {
436 ++$unreserve{"$schema_obj_name.$name"};
439 ++$unreserve{"$name (table name)"};
442 my $unreserve = sprintf '%s_', $name;
443 return $unreserve.$suffix;
448 # -------------------------------------------------------------------
458 Mark Addison E<lt>grommit@users.sourceforge.netE<gt> - Bulk of code from
459 Sybase producer, I just tweaked it for SQLServer. Thanks.