[dbsrgits/SQL-Translator.git] / lib / SQL / Translator / Producer / SQLServer.pm

package SQL::Translator::Producer::SQLServer;

# -------------------------------------------------------------------
# Copyright (C) 2002-2009 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
# published by the Free Software Foundation; version 2.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307  USA
# -------------------------------------------------------------------

=head1 NAME

SQL::Translator::Producer::SQLServer - MS SQLServer producer for SQL::Translator

=head1 SYNOPSIS

  use SQL::Translator;

  my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' );
  $t->translate;

=head1 DESCRIPTION

B<WARNING>B This is still fairly early code, basically a hacked version of the
Sybase Producer (thanks Sam, Paul and Ken for doing the real work ;-)

=head1 Extra Attributes

=over 4

=item field.list

List of values for an enum field.

=back

=head1 TODO

 * !! Write some tests !!
 * Reserved words list needs updating to SQLServer.
 * Triggers, Procedures and Views DO NOT WORK

=cut

use strict;
use vars qw[ $DEBUG $WARN $VERSION ];
$VERSION = '1.59';
$DEBUG = 1 unless defined $DEBUG;

use Data::Dumper;
use SQL::Translator::Schema::Constants;
use SQL::Translator::Utils qw(debug header_comment);

my %translate  = (
    date      => 'datetime',
    'time'    => 'datetime',
    # Sybase types
    #integer   => 'numeric',
    #int       => 'numeric',
    #number    => 'numeric',
    #money     => 'money',
    #varchar   => 'varchar',
    #varchar2  => 'varchar',
    #timestamp => 'datetime',
    #text      => 'varchar',
    #real      => 'double precision',
    #comment   => 'text',
    #bit       => 'bit',
    #tinyint   => 'smallint',
    #float     => 'double precision',
    #serial    => 'numeric', 
    #boolean   => 'varchar',
    #char      => 'char',
    #long      => 'varchar',
);

# TODO - This is still the Sybase list!
my %reserved = map { $_, 1 } qw[
    ALL ANALYSE ANALYZE AND ANY AS ASC 
    BETWEEN BINARY BOTH
    CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS
    CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER 
    DEFAULT DEFERRABLE DESC DISTINCT DO
    ELSE END EXCEPT
    FALSE FOR FOREIGN FREEZE FROM FULL 
    GROUP HAVING 
    ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL 
    JOIN LEADING LEFT LIKE LIMIT 
    NATURAL NEW NOT NOTNULL NULL
    OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS
    PRIMARY PUBLIC REFERENCES RIGHT 
    SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE 
    UNION UNIQUE USER USING VERBOSE WHEN WHERE
];

# If these datatypes have size appended the sql fails.
my @no_size = qw/tinyint smallint int integer bigint text bit image datetime/;

my $max_id_length    = 128;
my %global_names;
my %unreserve;

=pod

=head1 SQLServer Create Table Syntax

TODO

=cut

# -------------------------------------------------------------------
sub produce {
    my $translator     = shift;
    $DEBUG             = $translator->debug;
    $WARN              = $translator->show_warnings;
    my $no_comments    = $translator->no_comments;
    my $add_drop_table = $translator->add_drop_table;
    my $schema         = $translator->schema;

    %global_names = (); #reset
    %unreserve = ();

    my $output;
    $output .= header_comment."\n" unless ($no_comments);

    # Generate the DROP statements. We do this in one block here as if we
    # have fkeys we need to drop in the correct order otherwise they will fail
    # due to the dependancies the fkeys setup. (There is no way to turn off
    # fkey checking while we sort the schema like MySQL's set
    # foreign_key_checks=0)
    # We assume the tables are in the correct order to set them up as you need
    # to have created a table to fkey to it. So the reverse order should drop
    # them properly, fingers crossed...
    if ($add_drop_table) {
        $output .= "--\n-- Drop tables\n--\n\n" unless $no_comments;
        foreach my $table (
            sort { $b->order <=> $a->order } $schema->get_tables
        ) {
            my $name = unreserve($table->name);
            $output .= qq{IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') DROP TABLE $name;\n\n}
        }
    }

    # Generate the CREATE sql
    for my $table ( $schema->get_tables ) {
        my $table_name    = $table->name or next;
        my $table_name_ur = unreserve($table_name) || '';

        my ( @comments, @field_defs, @index_defs, @constraint_defs );

        push @comments, "\n\n--\n-- Table: $table_name_ur\n--"
        unless $no_comments;

        push @comments, map { "-- $_" } $table->comments;

        #
        # Fields
        #
        my %field_name_scope;
        for my $field ( $table->get_fields ) {
            my $field_name    = $field->name;
            my $field_name_ur = unreserve( $field_name, $table_name );
            my $field_def     = qq["$field_name_ur"];
            $field_def        =~ s/\"//g;
            if ( $field_def =~ /identity/ ){
                $field_def =~ s/identity/pidentity/;
            }

            #
            # Datatype
            #
            my $data_type      = lc $field->data_type;
            my $orig_data_type = $data_type;
            my %extra          = $field->extra;
            my $list           = $extra{'list'} || [];
            # \todo deal with embedded quotes
            my $commalist      = join( ', ', map { qq['$_'] } @$list );

            if ( $data_type eq 'enum' ) {
                my $check_name = mk_name( $field_name . '_chk' );
                push @constraint_defs,
                  "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))";
                $data_type .= 'character varying';
            }
            elsif ( $data_type eq 'set' ) {
                $data_type .= 'character varying';
            }
            else {
                if ( defined $translate{ $data_type } ) {
                    $data_type = $translate{ $data_type };
                }
                else {
                    warn "Unknown datatype: $data_type ",
                        "($table_name.$field_name)\n" if $WARN;
                }
            }

            my $size = $field->size;
            if ( grep $_ eq $data_type, @no_size) {
            # SQLServer doesn't seem to like sizes on some datatypes
                $size = undef;
            }
            elsif ( !$size ) {
                if ( $data_type =~ /numeric/ ) {
                    $size = '9,0';
                }
                elsif ( $orig_data_type eq 'text' ) {
                    #interpret text fields as long varchars
                    $size = '255';
                }
                elsif (
                    $data_type eq 'varchar' &&
                    $orig_data_type eq 'boolean'
                ) {
                    $size = '6';
                }
                elsif ( $data_type eq 'varchar' ) {
                    $size = '255';
                }
            }

            $field_def .= " $data_type";
            $field_def .= "($size)" if $size;

            $field_def .= ' IDENTITY' if $field->is_auto_increment;

            #
            # Not null constraint
            #
            unless ( $field->is_nullable ) {
                $field_def .= ' NOT NULL';
            }
            else {
                $field_def .= ' NULL' if $data_type ne 'bit';
            }

            #
            # Default value
            #
            my $default = $field->default_value;
            if ( defined $default ) {
                SQL::Translator::Producer->_apply_default_value(
                  \$field_def,
                  $default, 
                  [
                    'NULL'       => \'NULL',
                  ],
                );
            }

            push @field_defs, $field_def;            
        }

        #
        # Constraint Declarations
        #
        my @constraint_decs = ();
        for my $constraint ( $table->get_constraints ) {
            my $name    = $constraint->name || '';
            # Make sure we get a unique name
            my $type    = $constraint->type || NORMAL;
            my @fields  = map { unreserve( $_, $table_name ) }
                $constraint->fields;
            my @rfields = map { unreserve( $_, $table_name ) }
                $constraint->reference_fields;
            next unless @fields;

            my $c_def;
            if ( $type eq PRIMARY_KEY ) {
                $name ||= mk_name( $table_name . '_pk' );
                $c_def = 
                    "CONSTRAINT $name PRIMARY KEY ".
                    '(' . join( ', ', @fields ) . ')';
            }
            elsif ( $type eq FOREIGN_KEY ) {
                $name ||= mk_name( $table_name . '_fk' );
                my $on_delete = uc ($constraint->on_delete || '');
                my $on_update = uc ($constraint->on_update || '');

                # The default implicit constraint action in MSSQL is RESTRICT
                # but you can not specify it explicitly. Go figure :)
                for ($on_delete, $on_update) {
                  undef $_ if $_ eq 'RESTRICT'
                }

                $c_def = 
                    "CONSTRAINT $name FOREIGN KEY".
                    ' (' . join( ', ', @fields ) . ') REFERENCES '.
                    $constraint->reference_table.
                    ' (' . join( ', ', @rfields ) . ')';
                if ( $on_delete && $on_delete ne "NO ACTION") {
                  $c_def .= " ON DELETE $on_delete";
                }
                if ( $on_update && $on_update ne "NO ACTION") {
                  $c_def .= " ON UPDATE $on_update";
                }
            }
            elsif ( $type eq UNIQUE ) {
                $name ||= mk_name( $table_name . '_uc' );
                $c_def = 
                    "CONSTRAINT $name UNIQUE " .
                    '(' . join( ', ', @fields ) . ')';
            }
            push @constraint_defs, $c_def;
        }

        #
        # Indices
        #
        for my $index ( $table->get_indices ) {
            my $idx_name = $index->name || mk_name($table_name . '_idx');
            push @index_defs,
                "CREATE INDEX $idx_name ON $table_name (".
                join( ', ', $index->fields ) . ");";
        }

        my $create_statement = "";
        $create_statement .= qq[CREATE TABLE $table_name_ur (\n].
            join( ",\n", 
                map { "  $_" } @field_defs, @constraint_defs
            ).
            "\n);"
        ;

        $output .= join( "\n\n",
            @comments,
            $create_statement,
            @index_defs,
        );
    }

# create view/procedure are NOT prepended to the input $sql, needs
# to be filled in with the proper syntax

=pod

    # Text of view is already a 'create view' statement so no need to
    # be fancy
    foreach ( $schema->get_views ) {
        my $name = $_->name();
        $output .= "\n\n";
        $output .= "--\n-- View: $name\n--\n\n" unless $no_comments;
        my $text = $_->sql();
        $text =~ s/\r//g;
        $output .= "$text\nGO\n";
    }

    # Text of procedure already has the 'create procedure' stuff
    # so there is no need to do anything fancy. However, we should
    # think about doing fancy stuff with granting permissions and
    # so on.
    foreach ( $schema->get_procedures ) {
        my $name = $_->name();
        $output .= "\n\n";
        $output .= "--\n-- Procedure: $name\n--\n\n" unless $no_comments;
        my $text = $_->sql();
		$text =~ s/\r//g;
        $output .= "$text\nGO\n";
    }
=cut

    return $output;
}

# -------------------------------------------------------------------
sub mk_name {
    my ($name, $scope, $critical) = @_;

    $scope ||= \%global_names;
    if ( my $prev = $scope->{ $name } ) {
        my $name_orig = $name;
        $name        .= sprintf( "%02d", ++$prev );
        substr($name, $max_id_length - 3) = "00" 
            if length( $name ) > $max_id_length;

        warn "The name '$name_orig' has been changed to ",
             "'$name' to make it unique.\n" if $WARN;

        $scope->{ $name_orig }++;
    }
    $name = substr( $name, 0, $max_id_length ) 
                        if ((length( $name ) > $max_id_length) && $critical);
    $scope->{ $name }++;
    return $name;
}

# -------------------------------------------------------------------
sub unreserve {
    my $name            = shift || '';
    my $schema_obj_name = shift || '';
    my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : '';

    # also trap fields that don't begin with a letter
    return $name if !$reserved{ uc $name } && $name =~ /^[a-z]/i; 

    if ( $schema_obj_name ) {
        ++$unreserve{"$schema_obj_name.$name"};
    }
    else {
        ++$unreserve{"$name (table name)"};
    }

    my $unreserve = sprintf '%s_', $name;
    return $unreserve.$suffix;
}

1;

# -------------------------------------------------------------------

=pod

=head1 SEE ALSO

SQL::Translator.

=head1 AUTHORS

Mark Addison E<lt>grommit@users.sourceforge.netE<gt> - Bulk of code from
Sybase producer, I just tweaked it for SQLServer. Thanks.

=cut
Commit	Line	Data
7a0ceaa1	1	package SQL::Translator::Producer::SQLServer;
	2
	3	# -------------------------------------------------------------------
478f608d	4	# Copyright (C) 2002-2009 SQLFairy Authors
7a0ceaa1	5	#
	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.
	9	#
	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.
	14	#
	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
	18	# 02111-1307 USA
	19	# -------------------------------------------------------------------
	20
	21	=head1 NAME
	22
	23	SQL::Translator::Producer::SQLServer - MS SQLServer producer for SQL::Translator
	24
	25	=head1 SYNOPSIS
	26
	27	use SQL::Translator;
	28
	29	my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' );
	30	$t->translate;
	31
	32	=head1 DESCRIPTION
	33
	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 ;-)
	36
	37	=head1 Extra Attributes
	38
	39	=over 4
	40
	41	=item field.list
	42
	43	List of values for an enum field.
	44
	45	=back
	46
	47	=head1 TODO
	48
	49	* !! Write some tests !!
	50	* Reserved words list needs updating to SQLServer.
e2fb9ad3	51	* Triggers, Procedures and Views DO NOT WORK
7a0ceaa1	52
	53	=cut
	54
	55	use strict;
da06ac74	56	use vars qw[ $DEBUG $WARN $VERSION ];
4ab3763d	57	$VERSION = '1.59';
7a0ceaa1	58	$DEBUG = 1 unless defined $DEBUG;
	59
	60	use Data::Dumper;
	61	use SQL::Translator::Schema::Constants;
	62	use SQL::Translator::Utils qw(debug header_comment);
	63
	64	my %translate = (
	65	date => 'datetime',
	66	'time' => 'datetime',
	67	# Sybase types
	68	#integer => 'numeric',
	69	#int => 'numeric',
	70	#number => 'numeric',
	71	#money => 'money',
	72	#varchar => 'varchar',
	73	#varchar2 => 'varchar',
	74	#timestamp => 'datetime',
	75	#text => 'varchar',
	76	#real => 'double precision',
	77	#comment => 'text',
	78	#bit => 'bit',
	79	#tinyint => 'smallint',
	80	#float => 'double precision',
	81	#serial => 'numeric',
	82	#boolean => 'varchar',
	83	#char => 'char',
	84	#long => 'varchar',
	85	);
	86
	87	# TODO - This is still the Sybase list!
	88	my %reserved = map { $_, 1 } qw[
	89	ALL ANALYSE ANALYZE AND ANY AS ASC
	90	BETWEEN BINARY BOTH
	91	CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS
	92	CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER
	93	DEFAULT DEFERRABLE DESC DISTINCT DO
	94	ELSE END EXCEPT
	95	FALSE FOR FOREIGN FREEZE FROM FULL
	96	GROUP HAVING
	97	ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL
	98	JOIN LEADING LEFT LIKE LIMIT
	99	NATURAL NEW NOT NOTNULL NULL
	100	OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS
	101	PRIMARY PUBLIC REFERENCES RIGHT
	102	SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE
	103	UNION UNIQUE USER USING VERBOSE WHEN WHERE
	104	];
	105
	106	# If these datatypes have size appended the sql fails.
3e0bcbfd	107	my @no_size = qw/tinyint smallint int integer bigint text bit image datetime/;
7a0ceaa1	108
3e0bcbfd	109	my $max_id_length = 128;
7a0ceaa1	110	my %global_names;
7a0ceaa1	111	my %unreserve;
7a0ceaa1	112
	113	=pod
	114
	115	=head1 SQLServer Create Table Syntax
	116
	117	TODO
	118
	119	=cut
	120
	121	# -------------------------------------------------------------------
	122	sub produce {
	123	my $translator = shift;
	124	$DEBUG = $translator->debug;
	125	$WARN = $translator->show_warnings;
	126	my $no_comments = $translator->no_comments;
	127	my $add_drop_table = $translator->add_drop_table;
	128	my $schema = $translator->schema;
	129
e2fb9ad3	130	%global_names = (); #reset
	131	%unreserve = ();
	132
7a0ceaa1	133	my $output;
	134	$output .= header_comment."\n" unless ($no_comments);
	135
	136	# Generate the DROP statements. We do this in one block here as if we
	137	# have fkeys we need to drop in the correct order otherwise they will fail
	138	# due to the dependancies the fkeys setup. (There is no way to turn off
	139	# fkey checking while we sort the schema like MySQL's set
	140	# foreign_key_checks=0)
	141	# We assume the tables are in the correct order to set them up as you need
	142	# to have created a table to fkey to it. So the reverse order should drop
	143	# them properly, fingers crossed...
	144	if ($add_drop_table) {
	145	$output .= "--\n-- Drop tables\n--\n\n" unless $no_comments;
	146	foreach my $table (
	147	sort { $b->order <=> $a->order } $schema->get_tables
	148	) {
	149	my $name = unreserve($table->name);
	150	$output .= qq{IF EXISTS (SELECT name FROM sysobjects WHERE name = '$name' AND type = 'U') DROP TABLE $name;\n\n}
	151	}
	152	}
	153
	154	# Generate the CREATE sql
	155	for my $table ( $schema->get_tables ) {
	156	my $table_name = $table->name or next;
7a0ceaa1	157	my $table_name_ur = unreserve($table_name) \|\| '';
	158
	159	my ( @comments, @field_defs, @index_defs, @constraint_defs );
	160
	161	push @comments, "\n\n--\n-- Table: $table_name_ur\n--"
	162	unless $no_comments;
	163
	164	push @comments, map { "-- $_" } $table->comments;
	165
	166	#
	167	# Fields
	168	#
	169	my %field_name_scope;
	170	for my $field ( $table->get_fields ) {
e2fb9ad3	171	my $field_name = $field->name;
7a0ceaa1	172	my $field_name_ur = unreserve( $field_name, $table_name );
	173	my $field_def = qq["$field_name_ur"];
	174	$field_def =~ s/\"//g;
	175	if ( $field_def =~ /identity/ ){
	176	$field_def =~ s/identity/pidentity/;
	177	}
	178
	179	#
	180	# Datatype
	181	#
	182	my $data_type = lc $field->data_type;
	183	my $orig_data_type = $data_type;
	184	my %extra = $field->extra;
	185	my $list = $extra{'list'} \|\| [];
	186	# \todo deal with embedded quotes
	187	my $commalist = join( ', ', map { qq['$_'] } @$list );
7a0ceaa1	188
7a0ceaa1	189	if ( $data_type eq 'enum' ) {
e2fb9ad3	190	my $check_name = mk_name( $field_name . '_chk' );
7a0ceaa1	191	push @constraint_defs,
e2fb9ad3	192	"CONSTRAINT $check_name CHECK ($field_name IN ($commalist))";
7a0ceaa1	193	$data_type .= 'character varying';
	194	}
	195	elsif ( $data_type eq 'set' ) {
	196	$data_type .= 'character varying';
	197	}
	198	else {
	199	if ( defined $translate{ $data_type } ) {
	200	$data_type = $translate{ $data_type };
	201	}
	202	else {
	203	warn "Unknown datatype: $data_type ",
	204	"($table_name.$field_name)\n" if $WARN;
	205	}
	206	}
	207
	208	my $size = $field->size;
	209	if ( grep $_ eq $data_type, @no_size) {
	210	# SQLServer doesn't seem to like sizes on some datatypes
	211	$size = undef;
	212	}
	213	elsif ( !$size ) {
	214	if ( $data_type =~ /numeric/ ) {
	215	$size = '9,0';
	216	}
	217	elsif ( $orig_data_type eq 'text' ) {
	218	#interpret text fields as long varchars
	219	$size = '255';
	220	}
	221	elsif (
	222	$data_type eq 'varchar' &&
	223	$orig_data_type eq 'boolean'
	224	) {
	225	$size = '6';
	226	}
	227	elsif ( $data_type eq 'varchar' ) {
	228	$size = '255';
	229	}
	230	}
	231
	232	$field_def .= " $data_type";
	233	$field_def .= "($size)" if $size;
	234
	235	$field_def .= ' IDENTITY' if $field->is_auto_increment;
	236
	237	#
1426be03	238	# Not null constraint
	239	#
	240	unless ( $field->is_nullable ) {
	241	$field_def .= ' NOT NULL';
	242	}
	243	else {
	244	$field_def .= ' NULL' if $data_type ne 'bit';
	245	}
1426be03	246
1426be03	247	#
7a0ceaa1	248	# Default value
	249	#
	250	my $default = $field->default_value;
	251	if ( defined $default ) {
bc8e2aa1	252	SQL::Translator::Producer->_apply_default_value(
	253	\$field_def,
	254	$default,
	255	[
	256	'NULL' => \'NULL',
	257	],
7a0ceaa1	258	);
7a0ceaa1	259	}
bc8e2aa1	260
a7763b79	261	push @field_defs, $field_def;
7a0ceaa1	262	}
	263
	264	#
	265	# Constraint Declarations
	266	#
	267	my @constraint_decs = ();
7a0ceaa1	268	for my $constraint ( $table->get_constraints ) {
	269	my $name = $constraint->name \|\| '';
	270	# Make sure we get a unique name
7a0ceaa1	271	my $type = $constraint->type \|\| NORMAL;
	272	my @fields = map { unreserve( $_, $table_name ) }
	273	$constraint->fields;
	274	my @rfields = map { unreserve( $_, $table_name ) }
	275	$constraint->reference_fields;
	276	next unless @fields;
	277
5bac76bc	278	my $c_def;
7a0ceaa1	279	if ( $type eq PRIMARY_KEY ) {
e2fb9ad3	280	$name \|\|= mk_name( $table_name . '_pk' );
04a180d6	281	$c_def =
7a0ceaa1	282	"CONSTRAINT $name PRIMARY KEY ".
	283	'(' . join( ', ', @fields ) . ')';
	284	}
	285	elsif ( $type eq FOREIGN_KEY ) {
e2fb9ad3	286	$name \|\|= mk_name( $table_name . '_fk' );
5bac76bc	287	my $on_delete = uc ($constraint->on_delete \|\| '');
	288	my $on_update = uc ($constraint->on_update \|\| '');
	289
	290	# The default implicit constraint action in MSSQL is RESTRICT
	291	# but you can not specify it explicitly. Go figure :)
	292	for ($on_delete, $on_update) {
	293	undef $_ if $_ eq 'RESTRICT'
	294	}
	295
04a180d6	296	$c_def =
7a0ceaa1	297	"CONSTRAINT $name FOREIGN KEY".
	298	' (' . join( ', ', @fields ) . ') REFERENCES '.
	299	$constraint->reference_table.
	300	' (' . join( ', ', @rfields ) . ')';
5bac76bc	301	if ( $on_delete && $on_delete ne "NO ACTION") {
	302	$c_def .= " ON DELETE $on_delete";
	303	}
	304	if ( $on_update && $on_update ne "NO ACTION") {
	305	$c_def .= " ON UPDATE $on_update";
	306	}
7a0ceaa1	307	}
7a0ceaa1	308	elsif ( $type eq UNIQUE ) {
e2fb9ad3	309	$name \|\|= mk_name( $table_name . '_uc' );
04a180d6	310	$c_def =
7a0ceaa1	311	"CONSTRAINT $name UNIQUE " .
	312	'(' . join( ', ', @fields ) . ')';
	313	}
04a180d6	314	push @constraint_defs, $c_def;
7a0ceaa1	315	}
	316
	317	#
	318	# Indices
	319	#
	320	for my $index ( $table->get_indices ) {
e2fb9ad3	321	my $idx_name = $index->name \|\| mk_name($table_name . '_idx');
7a0ceaa1	322	push @index_defs,
	323	"CREATE INDEX $idx_name ON $table_name (".
	324	join( ', ', $index->fields ) . ");";
	325	}
	326
	327	my $create_statement = "";
	328	$create_statement .= qq[CREATE TABLE $table_name_ur (\n].
	329	join( ",\n",
	330	map { " $_" } @field_defs, @constraint_defs
	331	).
	332	"\n);"
	333	;
	334
	335	$output .= join( "\n\n",
	336	@comments,
	337	$create_statement,
	338	@index_defs,
7a0ceaa1	339	);
	340	}
	341
e2fb9ad3	342	# create view/procedure are NOT prepended to the input $sql, needs
	343	# to be filled in with the proper syntax
	344
6fac033a	345	=pod
e2fb9ad3	346
7a0ceaa1	347	# Text of view is already a 'create view' statement so no need to
	348	# be fancy
	349	foreach ( $schema->get_views ) {
	350	my $name = $_->name();
	351	$output .= "\n\n";
5c5997ef	352	$output .= "--\n-- View: $name\n--\n\n" unless $no_comments;
3e0bcbfd	353	my $text = $_->sql();
e2fb9ad3	354	$text =~ s/\r//g;
5bb0a4ee	355	$output .= "$text\nGO\n";
7a0ceaa1	356	}
	357
	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
	361	# so on.
	362	foreach ( $schema->get_procedures ) {
	363	my $name = $_->name();
	364	$output .= "\n\n";
5c5997ef	365	$output .= "--\n-- Procedure: $name\n--\n\n" unless $no_comments;
3e0bcbfd	366	my $text = $_->sql();
3e0bcbfd	367	$text =~ s/\r//g;
5bb0a4ee	368	$output .= "$text\nGO\n";
7a0ceaa1	369	}
e2fb9ad3	370	=cut
7a0ceaa1	371
	372	return $output;
	373	}
	374
	375	# -------------------------------------------------------------------
	376	sub mk_name {
e2fb9ad3	377	my ($name, $scope, $critical) = @_;
7a0ceaa1	378
	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 ) > $max_id_length;
	385
	386	warn "The name '$name_orig' has been changed to ",
	387	"'$name' to make it unique.\n" if $WARN;
	388
	389	$scope->{ $name_orig }++;
	390	}
	391	$name = substr( $name, 0, $max_id_length )
	392	if ((length( $name ) > $max_id_length) && $critical);
	393	$scope->{ $name }++;
	394	return $name;
	395	}
	396
	397	# -------------------------------------------------------------------
	398	sub unreserve {
	399	my $name = shift \|\| '';
	400	my $schema_obj_name = shift \|\| '';
	401	my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : '';
	402
	403	# also trap fields that don't begin with a letter
	404	return $name if !$reserved{ uc $name } && $name =~ /^[a-z]/i;
	405
	406	if ( $schema_obj_name ) {
	407	++$unreserve{"$schema_obj_name.$name"};
	408	}
	409	else {
	410	++$unreserve{"$name (table name)"};
	411	}
	412
	413	my $unreserve = sprintf '%s_', $name;
	414	return $unreserve.$suffix;
	415	}
	416
	417	1;
	418
	419	# -------------------------------------------------------------------
	420
	421	=pod
	422
	423	=head1 SEE ALSO
	424
	425	SQL::Translator.
	426
	427	=head1 AUTHORS
	428
	429	Mark Addison E<lt>grommit@users.sourceforge.netE<gt> - Bulk of code from
	430	Sybase producer, I just tweaked it for SQLServer. Thanks.
	431
	432	=cut