Additional tables for multi-table UPDATE (MySQL syntax)
Whether FROM clause appears before SET (Snowflake syntax)
JOINs after FROM clause (PostgreSQL, Snowflake, SQL Server syntax)
Leading comments before the statement
LIMIT clause (MySQL)
ORDER BY clause (MySQL)
OUTPUT clause (TSQL)
RETURNING clause (PostgreSQL, SQLite)
JOINs attached to the table list (MySQL multi-table syntax)
WITH clause (CTEs)
UPDATE statement