Mirror of <https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/dayofweek.html> (Salesforce, Data 360 Query Guide), read 2026-10-23. Salesforce's own page is the authority; this copy exists because that site refuses non-browser readers.

DAYOFWEEK

Applies to: ✅ Data 360 SQL ✅ Tableau Hyper API

Returns the day of the week as an integer.

• <date_value>: A date, timestamp, or timestamptz value.

Returns an integer from 0 (Sunday) through 6 (Saturday). NULL input returns NULL.

• Uses Snowflake numbering, not ISO numbering.

Return the weekday number for January 7, 2024, a Sunday.

Returns 0.

Return the weekday number for January 13, 2024, a Saturday.

Returns 6.

• DAYNAME
• Date/Time Functions and Operators

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