SQLT-DIFF-OLD(1)

💖 NAME 💖

okay so bestie, welcome to SQLT-DIFF-OLD(1) — the User Contributed Perl Documentation moment — where sqlt-diff is here to find the differences b/w two schemas. no cap, that's the whole name vibe. 🦋

✨ SYNOPSIS ✨

For help, run:

sqlt-diff -h|--help

For a list of all valid parsers, run:

sqlt -l|--list

To diff two schemas, run:

sqlt-diff [options] file_name1=parser file_name2=parser

Options, bestie:

• -d|--debug — Show debugging info. 🔍

🌸 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). slay.
• 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>] ) ;

okay important vibe check: ALTER/DROP TABLE and CREATE INDEX statements are not generated by the Producer, unfortunately, and may require massaging before being passed to your target database. so yeah, massage away before it hits your target database. 💀

🫶 AUTHOR 🫶

shoutout to Ken Youens-Clark <kclark@cpan.org>. 💖

🎀 SEE ALSO 🎀

go peek at SQL::Translator and <http://sqlfairy.sourceforge.net> — iconic references, iykyk. ✨

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later bestie 💅 this page is rockin' perl v5.42.0 energy and was dated 2024-12-12.