Expressions

A scalar expression is either of a known type, such as Number, Date, or String, or an unknown type. <Scalar Exp> consists of one of these:

<Numeric-castable Exp>

<Date Exp>

A numeric-castable expression is either Number, String, or an unknown type. <Numeric-castable Exp> consists of one of these:

<Numeric Exp>

<String Exp>

<Typeless Exp>