Release 10.1A: OpenEdge Data Management:
SQL Reference

> ## DAYOFWEEK

> Returns the day of the week in the argument as a short integer value in the range of 1–7.

> The argument `date_expression` can be the name of a column, the result of another scalar function, or a date or timestamp literal.

> #### Syntax

>     DAYOFWEEK ( date_expression )

> Example

> The following example shows how to use the `DAYOFWEEK` function:

>     SELECT *
>         FROM orders
>         WHERE DAYOFWEEK (order_date) = 2 ;

> #### Notes

> - The argument to the function must be of type `DATE`.

> - If `date_expression` is supplied as a date literal, it can be any of the valid `date_literal` formats where the day specification (DD) precedes the month specification (MM).

> - The result is of type `SHORT`.

> - If the argument expression evaluates to `NULL`, the result is `NULL`.

> ##### Compatibility

> ODBC compatible

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