Feedback on /docs/start/query: Improved `SHOW TABLES` procedure

[amotl]

Documentation feedback

• Page title: Query capabilities
• Page URL: https://cratedb.com/docs/guide/start/query/index.html
• Source: https://github.com/crate/cratedb-guide/blob/main/docs/start/query/index.md

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Possibly within this section, we could elaborate about how to quickly inquire existing database tables. SHOW TABLES was introduced for MySQL compatibility the other day, but it doesn't provide any means to display schema + table information.

References

• Improve SHOW TABLES crate#18922
• Improve PostgreSQL's \dt command crate#18926