Function currentTimestamp

Current timestamp (ANSI-standard spelling where available), dialect-appropriate.

• mysql/mariadb/postgres/cockroachdb/redshift/db2: CURRENT_TIMESTAMP
• mssql: CURRENT_TIMESTAMP (ANSI synonym for GETDATE())
• oracle: CURRENT_TIMESTAMP (session-timezone-aware; distinct from SYSTIMESTAMP)
• sqlite: CURRENT_TIMESTAMP (SQLite keyword, UTC)
• snowflake: CURRENT_TIMESTAMP()
• clickhouse: now() (no distinct CURRENT_TIMESTAMP; now() is the canonical form)