NAME

       sqlt-diff - find the differences b/w two schemas

SYNOPSIS

       For help:

         sqlt-diff -h|--help

       For a list of all valid parsers:

         sqlt -l|--list

       To diff two schemas:

         sqlt-diff [options] file_name1=parser1 file_name2=parser2

       Options:

         -d|--debug   Show debugging info
         -t|--trace   Turn on tracing for Parse::RecDescent
         -c|--case-insensitive   Compare tables/columns case-insensitively
         --ignore-index-names    Ignore index name differences
         --ignore-constraint-names   Ignore constraint name differences
         --mysql_parser_version=<#####> Specify a target MySQL parser version
                                        for dealing with /*! comments
         --output-db=<Producer>  This Producer will be used instead of one
                                 corresponding to parser1 to format output
                                 for new tables
         --ignore-view-sql    Ignore view SQL differences
         --ignore-proc-sql    Ignore procedure SQL differences
         --no-batch-alters    Do not clump multile alters to the same table into a
                              single ALTER TABLE statement where possible.
         --quote=<character>  Use <character> to quote all table and field
                              names in statements

DESCRIPTION

       sqlt-diff is a utility for creating a file of SQL commands necessary to transform the
       first schema provided to the second.  While not yet exhaustive in its ability to mutate
       the entire schema, it will report the following

       •   New tables

           Using the Producer class of the target (second) schema, any tables missing in the
           first schema will be generated in their entirety (fields, constraints, indices).

       •   Missing/altered fields

           Any fields missing or altered between the two schemas will be reported as:

             ALTER TABLE <table_name>
               [DROP <field_name>]
               [CHANGE <field_name> <datatype> (<size>)] ;

       •   Missing/altered indices

           Any indices missing or of a different type or on different fields will be indicated.
           Indices that should be dropped will be reported as such:

             DROP INDEX <index_name> ON <table_name> ;

           An index of a different type or on different fields will be reported as a new index as
           such:

             CREATE [<index_type>] INDEX [<index_name>] ON <table_name>
               ( <field_name>[,<field_name>] ) ;

       ALTER, CREATE, DROP statements are created by SQL::Translator::Producer::*, see there for
       support/problems.

       Currently (v0.0900), only MySQL is supported by this code.

AUTHOR

       Ken Youens-Clark <kclark@cpan.org>.

SEE ALSO

       SQL::Translator, <http://sqlfairy.sourceforge.net>.