Add JSON parser and producer modules

[dbsrgits/SQL-Translator.git] / Changes

* Apply quotes to fix tables that are reserved words, DBI::SQLServer (Jonathan C. Otsuka)
* Add DECIMAL_DIGITS to field size for scale info, DBI::SQLServer (Jonathan C. Otsuka)
* De-linkify XML namespace in docs (RT#81838)
* Allow both single and double quotes for values in MySQL parser
* Fix diff for altering two things per column - add ; at the end
* Call all diff methods in list context (it can be merged later)
* Fix Pg diff issue with drop constraint on primary keys
* SQLite support for SET NULL, SET DEFAULT and NO ACTION in FK clauses
* Clean up properly after Parser::DBI::PostgreSQL tests
* Fix typos in error messages
* Add SQL_TINYINT and SQL_BIGINT to the type map in
  SQL::Translator::Schema::Field
* Add JSON parser and producer (Jon Jensen)

# ----------------------------------------------------------
# 0.11016 2012-10-09
# ----------------------------------------------------------

* Allow passing an arrayref to SQLT->filename (lost in Mooification)

# ----------------------------------------------------------
# 0.11015 2012-10-05
# ----------------------------------------------------------

* Fix stupid missing version number in SQL::Translator::Schema::Object

# ----------------------------------------------------------
# 0.11014 2012-10-05
# ----------------------------------------------------------

* Relicense under Perl 5 terms

# ----------------------------------------------------------
# 0.11013_03 2012-09-25
# ----------------------------------------------------------

* Remove SQL::Translator::Schema::Graph as announced in 0.11011
* Remove a number of no longer needed deps

# ----------------------------------------------------------
# 0.11013_02 2012-09-23
# ----------------------------------------------------------

* Fix missing dep (List::MoreUtils)

# ----------------------------------------------------------
# 0.11013_01 2012-09-22
# ----------------------------------------------------------

* Convert SQL::Translator, ::Schema and ::Schema::* to Moo
* Fix leaks by weakening circular references between schema objects

# ----------------------------------------------------------
# 0.11013 2012-09-22
# ----------------------------------------------------------

* Make MySQL producer add NULL after every nullable field, conforming to SQL
  standard, and avoiding MySQL bugs

# ----------------------------------------------------------
# 0.11012 2012-07-02
# ----------------------------------------------------------

* Fix/update quoting in PostgreSQL producer
* Add missing quote function to SQLServer producer
* Fix incorrect Parser::DBI documentation (RT#60878)

# ----------------------------------------------------------
# 0.11011 2012-05-09
# ----------------------------------------------------------

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*** INCOMPATIBLE CHANGES:
* SQLT no longer supports setting separate conflicting values for the now
  deprecated 'quote_table_names' and 'quote_field_names'. Instead their values
  are proxied to the new 'quote_identifiers'. If 'quote_identifiers' is
  supplied, the legacy settings are ignored (with a warning). If nothing is
  specified the default is TRUE as before. If only one is specified - default
  to its value for everything, and if both are specified with a conflicting
  value an exception is thrown.
* Partial quoting support has been added in SQLite. It is currently disabled by
  default, you need to request is explicitly with quote_identifiers => 1. In a
  future version of SQL::Translator *THIS DEFAULT BEHAVIOR WILL CHANGE*.
  If you do NOT WANT quoting, set quote_identifiers to a false value to
  protect yourself from changes in a future release.
* Bump the default MySQL parser version to MySQL 4.0
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* script/sqlt-graph now accepts a --trace option
* Fixes to SQLite foreign keys production (patch from Johan Viklund)
  closes RT#16412, RT#44769
* ON DELETE/UPDATE actions for SQLite (patch from Lukas Thiemeier)
  closes RT#70734, RT#71283, RT#70378
* Fix data preservation on SQLite diffs involving adding/dropping columns
* Support for triggers in PostgreSQL producer and parser
* Correct Data Type in SQLT::Parser::DBI::PostgreSQL (patch from Andrew Pam)
* Fix index issue in SQLT::Parser::DBI::PostgreSQL
* Add column and table comments in SQLT::Parser::DBI::PostgreSQL(patch from Andrew Pam)
* Stop the DBI parser from disconnecting externally supplied DBI handles (RT#35868)
* Fixed alter_drop_constraint for foreign keys and applying multiple changes
  via alter_field to a column in Postgres Producer
* Added a working mechanism for naming foreign keys in the PostgreSQL producer
* Fix PostgreSQL ignoring default values with specified data type
* Fix PostgreSQL parser support for (N)::int defaults (patch by Tina Müller)
* Fix possible name duplication in SQLlite producer
* Oracle does not accept ON DELETE/UPDATE RESTRICT (though it is the actual default)
  fix by not adding the ON DELETE/UPDATE clause at all
* Changed dependency on Digest::SHA1 to the core-bundled Digest::SHA (RT#67989)
* Support for double quoted and bit strings as default values in MySQL parser
* Improved VIEW support in MySQL parser
* Proper handling of CURRENT_TIMESTAMP default values in MySQL parser (RT#65844)
* Check in MySQL parser to avoid trying to parse a table defined twice in the same
  file as indices (and probably other things) get messed up
* Workaround for some MySQL quirks on primary key definitions
* Fix dropping primary keys in MySQL diffs (RT#62250, patch from Nick Bertrand)
* MySQL producer does not attempt to write out non-existent unique constraint names
* MySQL parser correctly differentiates between signed and unsigned integer column
  display sizes
* Replace Class::Accessor::Fast dependency with already-included Moo
* Entire codebase is now free of tabs and trailing whitespace
* Spellfixes (RT#68912)
* Fix Diagram Producer POD (RT#71397, RT#71398)
* Fix Diagram Producer to use correct binmode on output (RT#71399)
* Fix ignored option to script/sqlt-diagram (RT#5992)
* Fix t/17sqlfxml-producer.t failures due to whitespace differences introduced by
  environment config snippets (RT#70786)
* Fix assembly of Table objects with numbered columns being added out of order
  (RT#74771) (based on patch from Jonathan Otsuka)
* Fix syntax error in SQL::Translator::Producer::Latex (RT#74953)
* Deprecate SQL::Translator::Schema::Graph and the as_graph() schema method
* Bump minimum supported perl version to 5.8.1 (mostly due to Moo)

# ----------------------------------------------------------
# 0.11010 2011-10-05
# ----------------------------------------------------------

* Add "if exists" to drop view statements in Pg.

# ----------------------------------------------------------
# 0.11009 2011-09-02
# ----------------------------------------------------------

* Fix MySQL producer to properly quote all table names on output (patch from geistteufel)

# ----------------------------------------------------------
# 0.11008 2011-05-04
# ----------------------------------------------------------

* Correctly create and parse FK constraints in SQLite
* Correct postgis geography type insertion and linebreak fix for multiple geometry/geography columns
* made PostgreSQL producer consistent with other producers in terms of
  quoting and allowing functions in constraints and indices
* Add distinction of autoinc and regular primary keys to the GraphViz producer
* Fix odd invocation of Test::More::pass() in t/36-filters.t (RT#64728)
* Quote everything in SQL Server
* Turn off constraints before dropping tables in SQL Server
* Make true unique constraints if needed in SQL Server
* Fixed Producer::PostgresSQL to output array type after type size,
  i.e. varchar(64)[] rather than varchar[](64)

# ----------------------------------------------------------
# 0.11007 2010-11-30
# ----------------------------------------------------------

* Fix POD typo in SQL/Translator/Schema/Trigger.pm
* Add explicit Scalar::Util to the deplist for really old perls
* Add support for PostGIS Geometry and Geography data types in the Pg producer
* Some minor fixes to squash warnings on new perls
* Support a custom_type_name hint when creating enum types in PostgreSQL
* Fix sqlt options/pod mismatch (RT#58318)
* Oracle Producer multicolumn constraint support
* Add support for triggers in the MySQL producer
* Fix unstable order of View's in MySQL parser

# ----------------------------------------------------------
# 0.11006 2010-06-03
# ----------------------------------------------------------
* Fix Producer::Oracle varchar2 without size def (ORA-00906: missing right
  parenthesis)
* Fix Producer::Oracle translate float and double to float instead of number
* Fix Producer::Oracle generation of too long unique constraint names
* Fix Producer::SQLite when generating VIEWs with add_drop_table => 1
* Fix Producer::MySQL not quoting index names when requested (RT#56173)
* Fix Producer::MySQL wrapping extra ()s around VIEW SELECT-ors (RT#56419)
* Fix Field::default_value to behave like a real accessor (allow undef as
  an unsetting argument)
* Fix Mysql/Pg/SQLite/MSSQL producers to properly *not* quote numeric default
  values (RT#57059)
* Producer::Oracle tests now use Test::Differences
* Prettify output of SQLite producer (less bogus newlines)
* Augment SQLite and Pg producers to accept a perl-formatted (%d.%03d%03d)
  and regular no-leading-zero (X.X.X) *_version producer args

# ----------------------------------------------------------
# 0.11005 2010-02-24
# ----------------------------------------------------------
* Fix Parser::DBI::Oracle reading too many tables (RT#49413)
* Fix Parser::MySQL tripping up on PRIMARY KEY ... USING (currently value is ignored) (RT#50468)
* Fix runaway debug trace (RT#52276)
* Fix Parser::PostgreSQL choking on commit; statements in DDL (#RT52277)
* Producer::Oracle now respects quote_field|table_names, and
  no longer does name munging of reserved table names
* Producer::Oracle now correctly outputs databse-unique index names

# ----------------------------------------------------------
# 0.11004 2010-02-14
# ----------------------------------------------------------
* Fix PG producer numeric precision regression (RT#49301)
* Add DB2 producer numeric/decimal precision output
* Fix Oracle producer creating numeric precision statements that the test case expects (no whitespace)
* Add Oracle producer creating drop view statements like PG producer does
* Fix SQL::Translator::Diff to use producer_args instead of producer_options

# ----------------------------------------------------------
# 0.11003 2009-09-28
# ----------------------------------------------------------
* Pg parser fixes to deal properly with MATCH <type>
* Pg parser fixes to parse timestamp attributes correctly
* Fix broken default detection in script/sqlt (RT#27438)
* Fix dependency issues with LibXML and TT

# ----------------------------------------------------------
# 0.11002 2009-08-30
# ----------------------------------------------------------
* Depend on fixed Parse::RecDescent
* Added skip-tables and skip-tables-like options to Diagram

# ----------------------------------------------------------
# 0.11001 2009-08-18
# ----------------------------------------------------------
* Removed last use of Readonly
* Adjusted YAML dependency

# ----------------------------------------------------------
# 0.11000 2009-08-18
# ----------------------------------------------------------
* Re-add version numbers to files, else cpan's "upgrade" gets very confused
* Replaced code using Readonly, since most of the rest uses constant, and thats already a dep
* Moved YAML and XML::LibXML back to recommends, the tests for both now skip if not installed
* Bumped to 0.11000 to supercede 0.10 which has incorrect numbering scheme

# ----------------------------------------------------------
# 0.10 2009-08-13
# ----------------------------------------------------------
* Resolved the following RT bugs (thanks to everyone for reporting!):
25791   does not recognize PostgreSQL ON_ERROR_STOP
29265   sqlt-diagram: --natural-join needs Graph::Directed
37814   SQLite translator failing to parse schema
42548   Producer::PostgreSQL incorrectly inserts the size in
        'time(stamp)? with(out) time zone' fields
43173   SQL::Translator::Parser without versionnumber - will install
        old 0.09002
46805   (No subject)
47026   META.yml is not packaged due to MANIFEST.SKIP (easyfix)
32130   Move from XML::XPath to XML::LibXML::XPathContext
22261   MySQL parse
13915   missing optional prerequisite cause make test to fail
8847    Diagram.pm: BINMODE missing in printing of graphic file.
21065   GraphViz producer fails on tables named 'node'
35448   Producer::PostgreSQL types without size
22026   sqlt-diagram uses -f arg twice
47897   [PATCH] Fix uninitialized value within @_ in (uc|lc)
47668   Mysql Parser doesn't recognize key types
46448   sqlt-graph errors out on MySQL DDL with btree keys
47176   Add Foreign Key support to Parser::DBI::PostgreSQL.pm
48025   MySQL Producer: Case inconsistency between elements in
        @no_length_attr and $data_type
48569   sqlt-diagram fails to load SQLite schema
48596   SQL::Translator::Diff::schema_diff should produce a list in
        list context
44907   SQL::Translator::Producer::PostgreSQL produce() in list context
        should return a list of statements

# ----------------------------------------------------------
# 0.09007 2009-06-25
# ----------------------------------------------------------
* Fixed Pg parser - caching the compiled P::RD schema is a *very*
  bad idea
* Fix MSSQL handling of ON UPDATE/DELETE RESTRICT
* Delay MSSQL FK constraint deployment until after all CREATE TABLE
  statements
* Coerce other engine's bytea/blob/clob datatypes to VarBinary

# ----------------------------------------------------------
# 0.09006 2009-06-10
# ----------------------------------------------------------
* Multiple test and dependency adhustments to make smokers happy
* Fix YAML producer wrt extra attribute
* Added support for "time(stamp) (p) with time zone" for Pg producer (mo)

# ----------------------------------------------------------
# 0.09005 2009-06-08
# ----------------------------------------------------------
* Add parser support for MySQL default values with a single quote
* Properly quote absolute table names in the MySQL producer
* Added CREATE VIEW subrules for mysql parser (wreis)
* Many fixes to code and tests for trigger's "database_events"
* Added semi-colon for (DROP|CREATE) TYPE statements in the Pg producer (wreis)
* ALTER TABLE/ALTER COLUMN/DROP DEFAULT support in Pg producer (mo)
* XML parser support for multi-event triggers
* SQLite producer support for multi-event triggers
* XML parser switched from XML::XPath to XML::LibXML
* Pg producer ALTER TABLE/COLUMN and DROP DEFAULT support
* MySQL producer skips length attribute for columns which do not support that
  attribute. Currently following column types are added to that list:
  date time timestamp datetime year
* Switch to Module::Install (mandates minimum perl 5.005)
* Major cleanup of GraphViz proucer
* Massive amount of fixes to SQLite/Pg/Mysql/MSSQL parsers/producers
  Fix most of the problems uncovered by the roundtrip test framework
  Some highlights:
    - Rewind exhausted globs before attempting a read
    - Do not add xml comment header if no_comments is set
    - table/field counts are held per schema object, not globally
    - no more variable table and column names in SQLite and MSSQL
    - VIEW support for Pg parser, also some cleanups
    - The way we generate Pg create view statements was not standards compliant
      (per RhodiumToad in #postgresql)
    - Disable MSSQL view/procedure production - they never worked in the first place
    - SQLite/MSSQL improvements:
      - Support parsing of all DROP clauses
      - Support parsing of field-level comments
      - When producing do not append table names to constraint/index names

# ----------------------------------------------------------
# 0.09004 2009-02-13
# ----------------------------------------------------------
* Add support for temporary tables in Pg (nachos)
* Create Trigger support for SQLite
* GraphViz producer improvements

# ----------------------------------------------------------
# 0.09003 2009-02-07
# ----------------------------------------------------------
  <BORKED RELEASE DELETED OFF CPAN>

# ----------------------------------------------------------
# 0.09002 2008-12-05
# ----------------------------------------------------------
* parsing MySQL CURRENT_TIMESTAMP as scalar ref so it can be produced without
  quotes (jgoulah)
* Add ignore_opts parser arg (to ignore table options) in Parser::MySQL (jgoulah)
* Skip tests for buggy Spreadsheet::ParseExcel versions (rbo)
* Add support for skip tables parser arg in Parser::DBI::MySQL (jgoulah)
* Changed behaviour of ::Producer::Oracle when returning an array of statements
  to make it compatible to DBI->do()
* Fixed a few bugs in ::Producer::Oracle
* Applied patch from jgoulah to support mysql's MERGE option
* Applied patch from rbo to add support of multiple database events on a trigger
* Applied patch from lukes to allow drop if exists in sqlite producer, with
  version >= 3.3
* Applied patch from rjbs with minor changes, now we support scalar refs in
  default values!
* Fixed SQLite producer to end index statements in newlines, in scalar context
* Decreed that all list context statements shall not end in ; or ;\n
* Fixed SQLite, Diff and MySQL producers to agree with Decree.
* Added support for CREATE VIEW + tests in the Pg producer (wreis)
* Added support for CREATE VIEW + tests in the sqlite producer (groditi)
* Added proper argument parsing and documentation to MySQL Parser and
  Producer (ribasushi)
* Using DROP VIEW instead of OR REPLACE clause in the Pg producer, as replace
  only allows replacement with identical set of columns (wreis)
* Added support for DROP VIEW and fixed CREATE VIEW statement in the sqlite
  producer (wreis)
* Removed source_db and target_db accessors from Diff (throwback to old version,
  only output_db is used)


* Support for longer varchar fields in MySQL

# ----------------------------------------------------------
# 0.09001 2008-08-19
# ----------------------------------------------------------
* Added support for CREATE VIEW + tests in the mysql producer (groditi)
* Added support for SET fields in the mysql producer + test (groditi)
* Added support for proper booleans in the mysql producer, when a mysql version
  of at least 4.x is supplied
* Added support for proper enums under pg (as of 8.3), with pg version check,
  and deferrable constraints
* Added support to truncate long constraint and index names in the mysql
  producer, because of a change to DBIx::Class to produce such long names in
  some cases.

# ----------------------------------------------------------
# 0.09000 2008-02-25
# ----------------------------------------------------------

* Fix Pg produces idea of which field types need a size param (wreis)
* Add support for COLLATE table option to MySQL parser
* Allow DEFAULT CHARACTER SET without '=' (as produced by mysqldump)

# -----------------------------------------------------------
# 0.0899_02 2008-01-29
# ----------------------------------------------------------

* Major refactoring of SQL::Translator::Diff again:
* Diff is no longer one huge monolithic function.
* Added more tests for diff
* When producing diffs for MySQL you will (by default) get single alter
  statements per table
* SQLite can also do remove columns (by creating a temp table as shown in
  http://sqlite.org/faq.html#q11
* Columns can be renamed if the new schema is from a form that can have metadata
  (which is pretty much anything but an SQL file.) It does this by looking at
  renamed_from in the $field->extra
* Updated Oracle and Postgres producers
* More tests!

# -----------------------------------------------------------
# 0.0899_01 2007-10-21
# ----------------------------------------------------------

* SQL::Translator::Diff now uses the ::Producer modules to create diffs
  This *will* break back-compatibility
  Use sqlt-diff-old for the previous one, and fix producers!

# -----------------------------------------------------------
# 0.08001 2007-09-26
# ----------------------------------------------------------

* Patched to ignore all TT versions >= 2.15 until TT is fixed :(

# -----------------------------------------------------------
# 0.08 2006-12-07
# -----------------------------------------------------------

* Patched 18ttschema-producer.t and 33tt-table-producter.t to skip on TT 2.15,
  thanks Ash!

# -----------------------------------------------------------
# 0.08_04 2006-11-10
# -----------------------------------------------------------

* Patched MySQL producer to name constraints sanely, thanks Ash
* Added patch to Producer::DB2 to avoid dependency issues with foreign keys
* Added patch to remove single quotes for numeric default values in Producer::DB2
* Fixed Parser::SQLite to require a semicolon after a create trigger statement
* Added patch from avinash to add CASCADE to pg table drops

# -----------------------------------------------------------
# 0.08_03
# -----------------------------------------------------------

* Added patch to use default values for Pg timestamp fields

# -----------------------------------------------------------
# 0.08_02    2006-11-03
# -----------------------------------------------------------

* Added patch from Ash to separate DROP statements in mysql producer in
  list-context
* Fixed up SQLites usage of no-comments

# -----------------------------------------------------------
# 0.08_01    2006-07-23
# -----------------------------------------------------------

* Made Trigger check that a give table exists in on_table - castaway
* Split some producers (DB2, MySQL, SQLite, PostgreSQL) into sub methods (others
  to follow) - castaway
* Add alter_* methods to some Producers and docs to Producer.pm (for use by Diff
  later) - castaway
* Made changes to allow producers to return a list of statements - castaway
* Split sqlt-diff into script and module - castaway
* Added quote_table_names and quote_field_names patch (omega, zamolxes) - castaway
* Added DB2 Producer - castaway
* Added mysql_character_set for 4.1+ -mda
* New filters, Names and Globals. -mda
* Added the initial work on a template based Dia UML producer. -mda

# -----------------------------------------------------------
# 0.07    2005-06-10
# -----------------------------------------------------------
*   YAML parser supports extra attributes on tables.

*   All schema objects now support the extra attribute, so can
    have arbitary name/value data attached to them.

*   Refactoring: Added SQL::Translator::Schema::Object - base
    class for all Schema objects.

*   Changes to MySQL Parser (Dave Howorth)
    - ignore INSERT statements
    - permit ALTER TABLE ADD FOREIGN KEY
    - allow trailing comma on last field in CREATE statements
    - collect the database name

*   TTSchema Producer
    - Can pass extra variables using tt_vars producer arg.
    - Can pass extra config using tt_conf producer arg.
    - Variables and config can be passed on the command line
      with --tt-var and --tt-conf options to sqlt.

*   Added schema filters.

*   MySQL Producer
    - Added 'mysql_table_type' extra attribute on tables.
    - Works out InnoDB tables from constraints.
    - mysql_charset and mysql_collate extra attributes for tables and fiels.


# -----------------------------------------------------------
# 0.06    2004-05-13
# -----------------------------------------------------------
*   Added SQL::Translator::Manual

*   Installation process now uses Module::Build

*   Added new "Dumper" producer

*   Changed the native SQL Fairy XML format to a fixed mapping.
    *NB:* You should convert your existing XML schema. See the
    SQL::Translator::Parser::XML::SQLFairy docs.

*   Added producers: TT::Base and TT::Table.

# -----------------------------------------------------------
# 0.05    2004-02-27
# -----------------------------------------------------------
*   Added "COMMENT ON *" syntax to PostgreSQL parser

*   Some fixes to Oracle parser as reported by Gail Binkley

*   Added support in PostgreSQL parser for all "ALTER TABLE" statements

*   Now distributing sqlt-diff script as it's pretty usable

*   Added new options to sqlt-graph and GraphViz producer (Dave Cash)

# -----------------------------------------------------------
# 0.04    2003-11-07
# -----------------------------------------------------------

*   Increased version of Constants module to 1.41 to avoid a problem
    where 0.02 has 1.4 of that file and 0.03 had 1.06 which confused
    CPAN

*   Hard-coded all the PREREQ_PM modules in Makefile.PL (rather than
    setting them dynamically) so that automated tests would pass

# -----------------------------------------------------------
# 0.03    2003-11-06
# -----------------------------------------------------------

*   Added parsers: XML::SQLFairy, Sybase, SQLite, DBI-MySQL,
    DBI-PostgreSQL, DBI-SQLite, DBI-Sybase, Storable, YAML

*   Added producers: XML::SQLFairy, TTSchema, Storable, YAML

*   HTML producer now uses stylesheets to allow easy customization of colors

*   Many bug fixes to most every module

*   Added "sqlt-dumper" script to help create a script for dumping
    a database a la "mysqldump"

*   Reversed the arrowheads on the graphical producers to show the
    relationships in a more standard way

*   Changes all included script names to start with "sqlt"

*   Added capturing and printing most embedded table and field comments

# -----------------------------------------------------------
# 0.02    2003-06-17
# -----------------------------------------------------------

*   Added parsers for Excel and Oracle

*   Removed Sybase parser because it didn't actually work

*   Added ClassDBI, Diagram, GraphViz, HTML, POD, SQLite, Sybase producers

*   Added Schema classes to represent schema as objects

*   Removed "Raw" producer in favor of the Schema classes

*   Removed "Validator" class as the Schema classes validate themselves

*   Improved all existing parsers and producers, expanding them to
    handle foreign keys much better, produce better output, etc.

*   Added sqlt-diagram.pl and sqlt-graphviz.pl as CLI frontends to the
    graphical producers

*   Added sql_translator.cgi as a web-form frontend to graphical producers

*   Expanded test suite

# -----------------------------------------------------------
# 0.01    2003-02-27
# -----------------------------------------------------------

*   Added parsers: XML::SQLFairy, Sybase, SQLite, DBI-MySQL,
    DBI-PostgreSQL, DBI-SQLite, DBI-Sybase, Storable, YAML

*   Added producers: XML::SQLFairy, TTSchema, Storable, YAML

*   HTML producer now uses stylesheets to allow easy customization of colors

*   Many bug fixes to most every module

*   Added "sqlt-dumper" script to help create a script for dumping
    a database a la "mysqldump"

*   Reversed the arrowheads on the graphical producers to show the
    relationships in a more standard way

*   Changes all included script names to start with "sqlt"

*   Added capturing and printing most embedded table and field comments