1 package SQL::Translator::Producer::SQLServer;
5 SQL::Translator::Producer::SQLServer - MS SQLServer producer for SQL::Translator
11 my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' );
16 B<WARNING>B This is still fairly early code, basically a hacked version of the
17 Sybase Producer (thanks Sam, Paul and Ken for doing the real work ;-)
19 =head1 Extra Attributes
25 List of values for an enum field.
31 * !! Write some tests !!
32 * Reserved words list needs updating to SQLServer.
33 * Triggers, Procedures and Views DO NOT WORK
39 our ( $DEBUG, $WARN );
40 our $VERSION = '1.59';
41 $DEBUG = 1 unless defined $DEBUG;
44 use SQL::Translator::Schema::Constants;
45 use SQL::Translator::Utils qw(debug header_comment);
46 use SQL::Translator::Generator::Utils;
47 use SQL::Translator::Generator::DDL::SQLServer;
49 my $util = SQL::Translator::Generator::Utils->new( quote_chars => ['[', ']'] );
50 my $future = SQL::Translator::Generator::DDL::SQLServer->new();
56 #integer => 'numeric',
60 #varchar => 'varchar',
61 #varchar2 => 'varchar',
62 #timestamp => 'datetime',
64 #real => 'double precision',
67 #tinyint => 'smallint',
68 #float => 'double precision',
70 #boolean => 'varchar',
75 # If these datatypes have size appended the sql fails.
76 my @no_size = qw/tinyint smallint int integer bigint text bit image datetime/;
78 my $max_id_length = 128;
83 =head1 SQLServer Create Table Syntax
90 my $translator = shift;
91 $DEBUG = $translator->debug;
92 $WARN = $translator->show_warnings;
93 my $no_comments = $translator->no_comments;
94 my $add_drop_table = $translator->add_drop_table;
95 my $schema = $translator->schema;
97 %global_names = (); #reset
100 $output .= header_comment."\n" unless ($no_comments);
102 # Generate the DROP statements.
103 if ($add_drop_table) {
104 my @tables = sort { $b->order <=> $a->order } $schema->get_tables;
105 $output .= "--\n-- Turn off constraints\n--\n\n" unless $no_comments;
106 foreach my $table (@tables) {
107 my $name = $table->name;
108 my $q_name = unreserve($name);
109 $output .= "IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') ALTER TABLE $q_name NOCHECK CONSTRAINT all;\n"
112 $output .= "--\n-- Drop tables\n--\n\n" unless $no_comments;
113 foreach my $table (@tables) {
114 my $name = $table->name;
115 my $q_name = unreserve($name);
116 $output .= "IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') DROP TABLE $q_name;\n"
120 # Generate the CREATE sql
122 my @foreign_constraints = (); # these need to be added separately, as tables may not exist yet
124 for my $table ( $schema->get_tables ) {
125 my $table_name = $table->name or next;
126 my $table_name_ur = unreserve($table_name) || '';
128 my ( @comments, @field_defs, @index_defs, @constraint_defs );
130 push @comments, "\n\n--\n-- Table: $table_name_ur\n--"
133 push @comments, map { "-- $_" } $table->comments;
138 my %field_name_scope;
139 for my $field ( $table->get_fields ) {
140 my $field_name = $field->name;
145 my $data_type = lc $field->data_type;
146 my %extra = $field->extra;
147 my $list = $extra{'list'} || [];
148 # \todo deal with embedded quotes
149 my $commalist = join( ', ', map { qq['$_'] } @$list );
151 if ( $data_type eq 'enum' ) {
152 my $check_name = mk_name( $field_name . '_chk' );
153 push @constraint_defs,
154 "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))";
155 $data_type .= 'character varying';
158 push @field_defs, $future->field($field);
162 # Constraint Declarations
164 my @constraint_decs = ();
165 for my $constraint ( $table->get_constraints ) {
166 my $name = $constraint->name || '';
167 my $name_ur = unreserve($name);
168 # Make sure we get a unique name
169 my $type = $constraint->type || NORMAL;
170 my @fields = map { unreserve( $_ ) }
172 my @rfields = map { unreserve( $_ ) }
173 $constraint->reference_fields;
177 if ( $type eq FOREIGN_KEY ) {
178 $name ||= mk_name( $table_name . '_fk' );
179 my $on_delete = uc ($constraint->on_delete || '');
180 my $on_update = uc ($constraint->on_update || '');
182 # The default implicit constraint action in MSSQL is RESTRICT
183 # but you can not specify it explicitly. Go figure :)
184 for ($on_delete, $on_update) {
185 undef $_ if $_ eq 'RESTRICT'
189 "ALTER TABLE $table_name_ur ADD CONSTRAINT $name_ur FOREIGN KEY".
190 ' (' . join( ', ', @fields ) . ') REFERENCES '.
191 unreserve($constraint->reference_table).
192 ' (' . join( ', ', @rfields ) . ')'
195 if ( $on_delete && $on_delete ne "NO ACTION") {
196 $c_def .= " ON DELETE $on_delete";
198 if ( $on_update && $on_update ne "NO ACTION") {
199 $c_def .= " ON UPDATE $on_update";
204 push @foreign_constraints, $c_def;
209 if ( $type eq PRIMARY_KEY ) {
210 $name = ($name ? unreserve($name) : mk_name( $table_name . '_pk' ));
212 "CONSTRAINT $name PRIMARY KEY ".
213 '(' . join( ', ', @fields ) . ')';
215 elsif ( $type eq UNIQUE ) {
216 $name = $name_ur || mk_name( $table_name . '_uc' );
217 my @nullable = grep { $_->is_nullable } $constraint->fields;
220 "CONSTRAINT $name UNIQUE " .
221 '(' . join( ', ', @fields ) . ')';
224 "CREATE UNIQUE NONCLUSTERED INDEX $name_ur ON $table_name_ur (" .
225 join( ', ', @fields ) . ')' .
226 ' WHERE ' . join( ' AND ', map unreserve($_->name) . ' IS NOT NULL', @nullable ) . ';';
230 push @constraint_defs, $c_def;
236 for my $index ( $table->get_indices ) {
237 my $idx_name = $index->name || mk_name($table_name . '_idx');
238 my $idx_name_ur = unreserve($idx_name);
240 "CREATE INDEX $idx_name_ur ON $table_name_ur (".
241 join( ', ', map unreserve($_), $index->fields ) . ");";
244 my $create_statement = "";
245 $create_statement .= qq[CREATE TABLE $table_name_ur (\n].
247 map { " $_" } @field_defs, @constraint_defs
252 $output .= join( "\n\n",
260 $output .= join ("\n", '', @foreign_constraints) if @foreign_constraints;
262 # create view/procedure are NOT prepended to the input $sql, needs
263 # to be filled in with the proper syntax
267 # Text of view is already a 'create view' statement so no need to
269 foreach ( $schema->get_views ) {
270 my $name = $_->name();
272 $output .= "--\n-- View: $name\n--\n\n" unless $no_comments;
273 my $text = $_->sql();
275 $output .= "$text\nGO\n";
278 # Text of procedure already has the 'create procedure' stuff
279 # so there is no need to do anything fancy. However, we should
280 # think about doing fancy stuff with granting permissions and
282 foreach ( $schema->get_procedures ) {
283 my $name = $_->name();
285 $output .= "--\n-- Procedure: $name\n--\n\n" unless $no_comments;
286 my $text = $_->sql();
288 $output .= "$text\nGO\n";
296 my ($name, $scope, $critical) = @_;
298 $scope ||= \%global_names;
299 if ( my $prev = $scope->{ $name } ) {
300 my $name_orig = $name;
301 $name .= sprintf( "%02d", ++$prev );
302 substr($name, $max_id_length - 3) = "00"
303 if length( $name ) > $max_id_length;
305 warn "The name '$name_orig' has been changed to ",
306 "'$name' to make it unique.\n" if $WARN;
308 $scope->{ $name_orig }++;
310 $name = substr( $name, 0, $max_id_length )
311 if ((length( $name ) > $max_id_length) && $critical);
313 return unreserve($name);
316 sub unreserve { $util->quote($_[0]) }
328 Mark Addison E<lt>grommit@users.sourceforge.netE<gt> - Bulk of code from
329 Sybase producer, I just tweaked it for SQLServer. Thanks.