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1 | #!/usr/bin/perl -w |
2 | # vim: set ft=perl: |
3 | |
4 | # ------------------------------------------------------------------- |
568bf60a |
5 | # $Id: sqlt-diff,v 1.8 2005-06-28 23:05:47 duality72 Exp $ |
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6 | # ------------------------------------------------------------------- |
daf4f623 |
7 | # Copyright (C) 2002-4 The SQLFairy Authors |
e12ca55a |
8 | # |
9 | # This program is free software; you can redistribute it and/or |
10 | # modify it under the terms of the GNU General Public License as |
11 | # published by the Free Software Foundation; version 2. |
12 | # |
13 | # This program is distributed in the hope that it will be useful, but |
14 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | # General Public License for more details. |
17 | # |
18 | # You should have received a copy of the GNU General Public License |
19 | # along with this program; if not, write to the Free Software |
20 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
21 | # 02111-1307 USA |
22 | # ------------------------------------------------------------------- |
23 | |
24 | =head1 NAME |
25 | |
26 | sqlt-diff - find the differences b/w two schemas |
27 | |
28 | =head1 SYNOPSIS |
29 | |
30 | For help: |
31 | |
32 | sqlt-diff -h|--help |
33 | |
34 | For a list of all valid parsers: |
35 | |
36 | sqlt -l|--list |
37 | |
38 | To diff two schemas: |
39 | |
21f5bf40 |
40 | sqlt-diff [options] file_name1=parser file_name2=parser |
e12ca55a |
41 | |
42 | Options: |
43 | |
44 | -d|--debug Show debugging info |
45 | |
46 | =head1 DESCRIPTION |
47 | |
942485ea |
48 | sqlt-diff is a utility for creating a file of SQL commands necessary to |
49 | transform the first schema provided to the second. While not yet |
50 | exhaustive in its ability to mutate the entire schema, it will report the |
51 | following |
52 | |
53 | =over |
54 | |
55 | =item * New tables |
56 | |
57 | Using the Producer class of the target (second) schema, any tables missing |
58 | in the first schema will be generated in their entirety (fields, constraints, |
59 | indices). |
60 | |
61 | =item * Missing/altered fields |
62 | |
63 | Any fields missing or altered between the two schemas will be reported |
64 | as: |
65 | |
66 | ALTER TABLE <table_name> |
67 | [DROP <field_name>] |
68 | [CHANGE <field_name> <datatype> (<size>)] ; |
69 | |
70 | =item * Missing/altered indices |
71 | |
72 | Any indices missing or of a different type or on different fields will be |
73 | indicated. Indices that should be dropped will be reported as such: |
74 | |
75 | DROP INDEX <index_name> ON <table_name> ; |
76 | |
77 | An index of a different type or on different fields will be reported as a |
78 | new index as such: |
79 | |
80 | CREATE [<index_type>] INDEX [<index_name>] ON <table_name> |
81 | ( <field_name>[,<field_name>] ) ; |
82 | |
83 | =back |
84 | |
85 | "ALTER/DROP TABLE" and "CREATE INDEX" statements B<are not> generated by |
86 | the Producer, unfortunately, and may require massaging before being passed to |
87 | your target database. |
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88 | |
89 | =cut |
90 | |
91 | # ------------------------------------------------------------------- |
92 | |
93 | use strict; |
94 | use Pod::Usage; |
95 | use Data::Dumper; |
96 | use SQL::Translator; |
942485ea |
97 | use SQL::Translator::Schema::Constants; |
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98 | |
99 | use vars qw( $VERSION ); |
568bf60a |
100 | $VERSION = sprintf "%d.%02d", q$Revision: 1.8 $ =~ /(\d+)\.(\d+)/; |
e12ca55a |
101 | |
102 | my ( @input, $list, $help, $debug ); |
103 | for my $arg ( @ARGV ) { |
104 | if ( $arg =~ m/^-?-l(ist)?$/ ) { |
105 | $list = 1; |
106 | } |
107 | elsif ( $arg =~ m/^-?-h(elp)?$/ ) { |
108 | $help = 1; |
109 | } |
110 | elsif ( $arg =~ m/^-?-d(ebug)?$/ ) { |
111 | $debug = 1; |
112 | } |
113 | elsif ( $arg =~ m/^([^=]+)=(.+)$/ ) { |
114 | push @input, { file => $1, parser => $2 }; |
115 | } |
116 | else { |
117 | pod2usage( msg => "Unknown argument '$arg'" ); |
118 | } |
119 | } |
120 | |
121 | pod2usage(1) if $help; |
942485ea |
122 | pod2usage('Please specify only two schemas to diff') if scalar @input > 2; |
e12ca55a |
123 | |
124 | my $tr = SQL::Translator->new; |
125 | my @parsers = $tr->list_parsers; |
126 | my %valid_parsers = map { $_, 1 } @parsers; |
127 | |
128 | if ( $list ) { |
129 | print "\nParsers:\n", map { "\t$_\n" } sort @parsers; |
130 | print "\n"; |
131 | exit(0); |
132 | } |
133 | |
134 | pod2usage( msg => 'Too many file args' ) if @input > 2; |
135 | |
942485ea |
136 | my ( $source_schema, $source_db, $target_schema, $target_db ); |
137 | my $i = 2; |
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138 | for my $in ( @input ) { |
139 | my $file = $in->{'file'}; |
140 | my $parser = $in->{'parser'}; |
141 | |
142 | die "Unable to read file '$file'\n" unless -r $file; |
143 | die "'$parser' is an invalid parser\n" unless $valid_parsers{ $parser }; |
144 | |
145 | my $t = SQL::Translator->new; |
146 | $t->debug( $debug ); |
147 | $t->parser( $parser ) or die $tr->error; |
148 | $t->producer( 'YAML' ) or die $tr->error; |
149 | my $out = $t->translate( $file ) or die $tr->error; |
150 | my $schema = $t->schema; |
151 | unless ( $schema->name ) { |
152 | $schema->name( $file ); |
153 | } |
154 | |
155 | if ( $i == 1 ) { |
942485ea |
156 | $source_schema = $schema; |
157 | $source_db = $parser; |
e12ca55a |
158 | } |
159 | else { |
942485ea |
160 | $target_schema = $schema; |
161 | $target_db = $parser; |
e12ca55a |
162 | } |
942485ea |
163 | $i--; |
e12ca55a |
164 | } |
d71512a6 |
165 | my $case_insensitive = $target_db =~ /SQLServer/; |
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166 | |
942485ea |
167 | my $s1_name = $source_schema->name; |
168 | my $s2_name = $target_schema->name; |
d71512a6 |
169 | my ( @new_tables, @diffs , @diffs_at_end); |
942485ea |
170 | for my $t1 ( $source_schema->get_tables ) { |
171 | my $t1_name = $t1->name; |
d71512a6 |
172 | my $t2 = $target_schema->get_table( $t1_name, $case_insensitive ); |
942485ea |
173 | |
8b3b2f0c |
174 | warn "TABLE '$s1_name.$t1_name'\n" if $debug; |
942485ea |
175 | unless ( $t2 ) { |
8b3b2f0c |
176 | warn "Couldn't find table '$s1_name.$t1_name' in '$s2_name'\n" |
177 | if $debug; |
d71512a6 |
178 | if ( $target_db =~ /SQLServer/ ) { |
179 | for my $constraint ( $t1->get_constraints ) { |
180 | next if $constraint->type eq PRIMARY_KEY; |
181 | push @diffs_at_end, "ALTER TABLE $t1_name ADD ". |
182 | constraint_to_string($constraint, $source_schema).";"; |
183 | $t1->drop_constraint($constraint); |
184 | } |
185 | } |
942485ea |
186 | push @new_tables, $t1; |
187 | next; |
188 | } |
d71512a6 |
189 | |
190 | # Go through our options |
191 | my $options_different = 0; |
192 | my %checkedOptions; |
193 | OPTION: |
194 | for my $t1_option_ref ( $t1->options ) { |
195 | my($key1, $value1) = %{$t1_option_ref}; |
196 | for my $t2_option_ref ( $t2->options ) { |
197 | my($key2, $value2) = %{$t2_option_ref}; |
198 | if ( $key1 eq $key2 ) { |
199 | if ( defined $value1 != defined $value2 ) { |
200 | $options_different = 1; |
201 | last OPTION; |
202 | } |
203 | if ( defined $value1 && $value1 ne $value2 ) { |
204 | $options_different = 1; |
205 | last OPTION; |
206 | } |
207 | $checkedOptions{$key1} = 1; |
208 | next OPTION; |
209 | } |
210 | } |
211 | $options_different = 1; |
212 | last OPTION; |
213 | } |
214 | # Go through the other table's options |
215 | unless ( $options_different ) { |
216 | for my $t2_option_ref ( $t2->options ) { |
217 | my($key, $value) = %{$t2_option_ref}; |
218 | next if $checkedOptions{$key}; |
219 | $options_different = 1; |
220 | last; |
221 | } |
222 | } |
223 | # If there's a difference, just re-set all the options |
224 | my @diffs_table_options; |
225 | if ( $options_different ) { |
226 | my @options = (); |
227 | foreach my $option_ref ( $t1->options ) { |
228 | my($key, $value) = %{$option_ref}; |
229 | push(@options, defined $value ? "$key=$value" : $key); |
230 | } |
231 | my $options = join(' ', @options); |
232 | @diffs_table_options = ("ALTER TABLE $t1_name $options;"); |
233 | } |
234 | |
942485ea |
235 | my $t2_name = $t2->name; |
d71512a6 |
236 | my(@diffs_table_adds, @diffs_table_changes); |
942485ea |
237 | for my $t1_field ( $t1->get_fields ) { |
afdf6a1c |
238 | my $f1_type = $t1_field->data_type; |
239 | my $f1_size = $t1_field->size; |
240 | my $f1_name = $t1_field->name; |
d71512a6 |
241 | my $f1_nullable = $t1_field->is_nullable; |
242 | my $f1_default = $t1_field->default_value; |
243 | my $f1_auto_inc = $t1_field->is_auto_increment; |
afdf6a1c |
244 | my $t2_field = $t2->get_field( $f1_name ); |
942485ea |
245 | my $f1_full_name = "$s1_name.$t1_name.$t1_name"; |
8b3b2f0c |
246 | warn "FIELD '$f1_full_name'\n" if $debug; |
e12ca55a |
247 | |
afdf6a1c |
248 | my $f2_full_name = "$s2_name.$t2_name.$f1_name"; |
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249 | |
942485ea |
250 | unless ( $t2_field ) { |
8b3b2f0c |
251 | warn "Couldn't find field '$f2_full_name' in '$t2_name'\n" |
252 | if $debug; |
d71512a6 |
253 | my $temp_default_value = 0; |
254 | if ( $target_db =~ /SQLServer/ && !$f1_nullable && !defined $f1_default ) { |
255 | # SQL Server doesn't allow adding non-nullable, non-default columns |
256 | # so we add it with a default value, then remove the default value |
257 | $temp_default_value = 1; |
258 | my(@numeric_types) = qw(decimal numeric float real int bigint smallint tinyint); |
259 | $f1_default = grep($_ eq $f1_type, @numeric_types) ? 0 : ''; |
260 | } |
261 | push @diffs_table_adds, sprintf( "ALTER TABLE %s ADD %s %s%s%s%s%s;", |
afdf6a1c |
262 | $t1_name, $f1_name, $f1_type, |
d71512a6 |
263 | ($f1_size && $f1_type !~ /(blob|text)$/) ? "($f1_size)" : '', |
264 | $f1_nullable ? '' : ' NOT NULL', |
265 | !defined $f1_default ? '' |
266 | : uc $f1_default eq 'NULL' ? ' DEFAULT NULL' |
267 | : uc $f1_default eq 'CURRENT_TIMESTAMP' ? ' DEFAULT CURRENT_TIMESTAMP' |
268 | : " DEFAULT '$f1_default'", |
269 | $f1_auto_inc ? ' AUTO_INCREMENT' : '', |
afdf6a1c |
270 | ); |
d71512a6 |
271 | if ( $temp_default_value ) { |
272 | undef $f1_default; |
568bf60a |
273 | push @diffs_table_adds, sprintf( <<END |
274 | DECLARE \@defname VARCHAR(100), \@cmd VARCHAR(1000) |
275 | SET \@defname = |
276 | (SELECT name |
277 | FROM sysobjects so JOIN sysconstraints sc |
278 | ON so.id = sc.constid |
279 | WHERE object_name(so.parent_obj) = '%s' |
280 | AND so.xtype = 'D' |
281 | AND sc.colid = |
282 | (SELECT colid FROM syscolumns |
283 | WHERE id = object_id('%s') AND |
284 | name = '%s')) |
285 | SET \@cmd = 'ALTER TABLE %s DROP CONSTRAINT ' |
286 | + \@defname |
287 | EXEC(\@cmd) |
288 | END |
289 | , $t1_name, $t1_name, $f1_name, $t1_name, |
d71512a6 |
290 | ); |
291 | } |
e12ca55a |
292 | next; |
293 | } |
294 | |
afdf6a1c |
295 | my $f2_type = $t2_field->data_type; |
d71512a6 |
296 | my $f2_size = $t2_field->size || ''; |
297 | my $f2_nullable = $t2_field->is_nullable; |
298 | my $f2_default = $t2_field->default_value; |
299 | my $f2_auto_inc = $t2_field->is_auto_increment; |
d71512a6 |
300 | if ( !$t1_field->equals($t2_field, $case_insensitive) ) { |
568bf60a |
301 | # SQLServer timestamp fields can't be altered, so we drop and add instead |
d71512a6 |
302 | if ( $target_db =~ /SQLServer/ && $f2_type eq "timestamp" ) { |
303 | push @diffs_table_changes, "ALTER TABLE $t1_name DROP COLUMN $f1_name;"; |
304 | push @diffs_table_changes, sprintf( "ALTER TABLE %s ADD %s %s%s%s%s%s;", |
305 | $t1_name, $f1_name, $f1_type, |
306 | ($f1_size && $f1_type !~ /(blob|text)$/) ? "($f1_size)" : '', |
307 | $f1_nullable ? '' : ' NOT NULL', |
308 | !defined $f1_default ? '' |
309 | : uc $f1_default eq 'NULL' ? ' DEFAULT NULL' |
310 | : uc $f1_default eq 'CURRENT_TIMESTAMP' ? ' DEFAULT CURRENT_TIMESTAMP' |
311 | : " DEFAULT '$f1_default'", |
312 | $f1_auto_inc ? ' AUTO_INCREMENT' : '', |
313 | ); |
314 | next; |
315 | } |
316 | |
317 | push @diffs_table_changes, sprintf( "ALTER TABLE %s %s %s%s %s%s%s%s%s;", |
318 | $t1_name, $target_db =~ /SQLServer/ ? "ALTER COLUMN" : "CHANGE", |
319 | $f1_name, $target_db =~ /MySQL/ ? " $f1_name" : '', |
320 | $f1_type, ($f1_size && $f1_type !~ /(blob|text)$/) ? "($f1_size)" : '', |
321 | $f1_nullable ? '' : ' NOT NULL', |
322 | !defined $f1_default || $target_db =~ /SQLServer/ ? '' |
323 | : uc $f1_default eq 'NULL' ? ' DEFAULT NULL' |
324 | : uc $f1_default eq 'CURRENT_TIMESTAMP' ? ' DEFAULT CURRENT_TIMESTAMP' |
325 | : " DEFAULT '$f1_default'", |
326 | $f1_auto_inc ? ' AUTO_INCREMENT' : '', |
afdf6a1c |
327 | ); |
d71512a6 |
328 | if ( defined $f1_default && $target_db =~ /SQLServer/ ) { |
329 | # Adding a column with a default value for SQL Server means adding a |
330 | # constraint and setting existing NULLs to the default value |
331 | push @diffs_table_changes, sprintf( "ALTER TABLE %s ADD CONSTRAINT DF_%s_%s %s FOR %s;", |
332 | $t1_name, $t1_name, $f1_name, uc $f1_default eq 'NULL' ? 'DEFAULT NULL' |
333 | : uc $f1_default eq 'CURRENT_TIMESTAMP' ? 'DEFAULT CURRENT_TIMESTAMP' |
334 | : "DEFAULT '$f1_default'", $f1_name, |
335 | ); |
336 | push @diffs_table_changes, sprintf( "UPDATE %s SET %s = %s WHERE %s IS NULL;", |
337 | $t1_name, $f1_name, uc $f1_default eq 'NULL' ? 'NULL' |
338 | : uc $f1_default eq 'CURRENT_TIMESTAMP' ? 'CURRENT_TIMESTAMP' |
339 | : "'$f1_default'", $f1_name, |
340 | ); |
e12ca55a |
341 | } |
342 | } |
343 | } |
d71512a6 |
344 | |
568bf60a |
345 | my(%checked_indices, @diffs_index_creates, @diffs_index_drops); |
d71512a6 |
346 | INDEX: |
347 | for my $i1 ( $t1->get_indices ) { |
568bf60a |
348 | for my $i2 ( $t2->get_indices ) { |
d71512a6 |
349 | if ( $i1->equals($i2, $case_insensitive) ) { |
568bf60a |
350 | $checked_indices{$i2} = 1; |
d71512a6 |
351 | next INDEX; |
352 | } |
353 | } |
354 | push @diffs_index_creates, sprintf( |
942485ea |
355 | "CREATE %sINDEX%s ON %s (%s);", |
d71512a6 |
356 | $i1->type eq NORMAL ? '' : $i1->type." ", |
357 | $i1->name ? " ".$i1->name : '', |
942485ea |
358 | $t1_name, |
d71512a6 |
359 | join(",", $i1->fields), |
942485ea |
360 | ); |
d71512a6 |
361 | } |
568bf60a |
362 | INDEX2: |
363 | for my $i2 ( $t2->get_indices ) { |
364 | next if $checked_indices{$i2}; |
365 | for my $i1 ( $t1->get_indices ) { |
366 | next INDEX2 if $i2->equals($i1, $case_insensitive); |
367 | } |
d71512a6 |
368 | $target_db =~ /SQLServer/ |
369 | ? push @diffs_index_drops, "DROP INDEX $t1_name.".$i2->name.";" |
370 | : push @diffs_index_drops, "DROP INDEX ".$i2->name." on $t1_name;"; |
371 | } |
372 | |
568bf60a |
373 | my(%checked_constraints, @diffs_constraint_adds, @diffs_constraint_drops); |
d71512a6 |
374 | CONSTRAINT: |
375 | for my $c1 ( $t1->get_constraints ) { |
568bf60a |
376 | for my $c2 ( $t2->get_constraints ) { |
d71512a6 |
377 | if ( $c1->equals($c2, $case_insensitive) ) { |
568bf60a |
378 | $checked_constraints{$c2} = 1; |
d71512a6 |
379 | next CONSTRAINT; |
380 | } |
381 | } |
382 | push @diffs_constraint_adds, "ALTER TABLE $t1_name ADD ". |
383 | constraint_to_string($c1, $source_schema).";"; |
384 | } |
568bf60a |
385 | CONSTRAINT2: |
386 | for my $c2 ( $t2->get_constraints ) { |
387 | next if $checked_constraints{$c2}; |
388 | for my $c1 ( $t1->get_constraints ) { |
389 | next CONSTRAINT2 if $c2->equals($c1, $case_insensitive); |
390 | } |
d71512a6 |
391 | if ( $c2->type eq UNIQUE ) { |
392 | push @diffs_constraint_drops, "ALTER TABLE $t1_name DROP INDEX ". |
393 | $c2->name.";"; |
394 | } elsif ( $target_db =~ /SQLServer/ ) { |
395 | push @diffs_constraint_drops, "ALTER TABLE $t1_name DROP ".$c2->name.";"; |
396 | } else { |
397 | push @diffs_constraint_drops, "ALTER TABLE $t1_name DROP ".$c2->type. |
398 | ($c2->type eq FOREIGN_KEY ? " ".$c2->name : '').";"; |
399 | } |
400 | } |
401 | |
402 | push @diffs, @diffs_index_drops, @diffs_constraint_drops, |
403 | @diffs_table_options, @diffs_table_adds, @diffs_table_changes, |
404 | @diffs_constraint_adds, @diffs_index_creates; |
942485ea |
405 | } |
406 | |
407 | for my $t2 ( $target_schema->get_tables ) { |
408 | my $t2_name = $t2->name; |
d71512a6 |
409 | my $t1 = $source_schema->get_table( $t2_name, $target_db =~ /SQLServer/ ); |
942485ea |
410 | |
411 | unless ( $t1 ) { |
d71512a6 |
412 | if ( $target_db =~ /SQLServer/ ) { |
413 | for my $constraint ( $t2->get_constraints ) { |
414 | next if $constraint->type eq PRIMARY_KEY; |
415 | push @diffs, "ALTER TABLE $t2_name DROP ".$constraint->name.";"; |
416 | } |
417 | } |
418 | push @diffs_at_end, "DROP TABLE $t2_name;"; |
942485ea |
419 | next; |
420 | } |
421 | |
422 | for my $t2_field ( $t2->get_fields ) { |
423 | my $f2_name = $t2_field->name; |
424 | my $t1_field = $t1->get_field( $f2_name ); |
425 | unless ( $t1_field ) { |
d71512a6 |
426 | my $modifier = $target_db =~ /SQLServer/ ? "COLUMN " : ''; |
427 | push @diffs, "ALTER TABLE $t2_name DROP $modifier$f2_name;"; |
942485ea |
428 | } |
429 | } |
430 | } |
431 | |
432 | if ( @new_tables ) { |
433 | my $dummy_tr = SQL::Translator->new; |
434 | $dummy_tr->schema->add_table( $_ ) for @new_tables; |
435 | my $producer = $dummy_tr->producer( $target_db ); |
436 | unshift @diffs, $producer->( $dummy_tr ); |
e12ca55a |
437 | } |
d71512a6 |
438 | push(@diffs, @diffs_at_end); |
e12ca55a |
439 | |
440 | if ( @diffs ) { |
942485ea |
441 | print join( "\n", |
8b3b2f0c |
442 | "-- Convert schema '$s2_name' to '$s1_name':\n", @diffs, '' |
942485ea |
443 | ); |
e12ca55a |
444 | } |
445 | else { |
446 | print "There were no differences.\n"; |
447 | } |
448 | |
d71512a6 |
449 | sub constraint_to_string { |
450 | my $c = shift; |
451 | my $schema = shift or die "No schema given"; |
452 | my @fields = $c->fields or return ''; |
453 | |
454 | if ( $c->type eq PRIMARY_KEY ) { |
455 | return 'PRIMARY KEY (' . join(', ', @fields). ')'; |
456 | } |
457 | elsif ( $c->type eq UNIQUE ) { |
458 | return 'UNIQUE '. |
459 | (defined $c->name ? $c->name.' ' : ''). |
460 | '(' . join(', ', @fields). ')'; |
461 | } |
462 | elsif ( $c->type eq FOREIGN_KEY ) { |
463 | my $def = join(' ', |
464 | map { $_ || () } 'CONSTRAINT', $c->name, 'FOREIGN KEY' |
465 | ); |
466 | |
467 | $def .= ' (' . join( ', ', @fields ) . ')'; |
468 | |
469 | $def .= ' REFERENCES ' . $c->reference_table; |
470 | |
471 | my @rfields = map { $_ || () } $c->reference_fields; |
472 | unless ( @rfields ) { |
473 | my $rtable_name = $c->reference_table; |
474 | if ( my $ref_table = $schema->get_table( $rtable_name ) ) { |
475 | push @rfields, $ref_table->primary_key; |
476 | } |
477 | else { |
478 | warn "Can't find reference table '$rtable_name' " . |
479 | "in schema\n"; |
480 | } |
481 | } |
482 | |
483 | if ( @rfields ) { |
484 | $def .= ' (' . join( ', ', @rfields ) . ')'; |
485 | } |
486 | else { |
487 | warn "FK constraint on " . 'some table' . '.' . |
488 | join('', @fields) . " has no reference fields\n"; |
489 | } |
490 | |
491 | if ( $c->match_type ) { |
492 | $def .= ' MATCH ' . |
493 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
494 | } |
495 | |
496 | if ( $c->on_delete ) { |
497 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
498 | } |
499 | |
500 | if ( $c->on_update ) { |
501 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
502 | } |
503 | |
504 | return $def; |
505 | } |
506 | } |
507 | |
e12ca55a |
508 | # ------------------------------------------------------------------- |
509 | # Bring out number weight & measure in a year of dearth. |
510 | # William Blake |
511 | # ------------------------------------------------------------------- |
512 | |
513 | =pod |
514 | |
515 | =head1 AUTHOR |
516 | |
517 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
518 | |
519 | =head1 SEE ALSO |
520 | |
521 | SQL::Translator, L<http://sqlfairy.sourceforge.net>. |
522 | |
523 | =cut |