关于Amazon Aurora是否支持Updatable Views的技术问询

Hey Sridhar, glad to help clear this up for you as you plan to adopt Aurora! The short answer is yes—Amazon Aurora does support updatable views, and the specifics align with the open-source database flavors it's compatible with (MySQL and PostgreSQL). Here's a detailed breakdown:

• MySQL-compatible Amazon Aurora: This variant fully inherits MySQL's support for updatable views. For a view to be updatable, it typically needs to meet these core criteria:

  • Based on a single underlying table (no cross-table joins unless you use INSTEAD OF triggers for more complex scenarios)
  • No aggregate functions (SUM, COUNT, etc.), DISTINCT, GROUP BY, HAVING, or UNION clauses included
  • View columns directly map to base table columns (no derived expression values unless paired with triggers)

  For example, if you create a simple view:

  CREATE VIEW customer_snapshot AS
  SELECT id, full_name, phone FROM customers;
  

  Running an update like UPDATE customer_snapshot SET phone = '555-1234' WHERE id = 101; will modify the underlying customers table just as it would in standard MySQL.

• PostgreSQL-compatible Amazon Aurora: This version follows PostgreSQL's updatable view rules. Basic single-table views are updatable by default, and you can use INSTEAD OF triggers to enable updates on more complex views (like those joining multiple tables or including calculated fields). You can also add WITH CHECK OPTION to enforce constraints on what data can be inserted/updated via the view.

Since Aurora is built to be a drop-in replacement for MySQL and PostgreSQL, any existing best practices or documentation for updatable views in those open-source databases will apply directly to Aurora.

内容的提问来源于stack exchange，提问作者Sridhar