Basic XQuery expression.
An Expr represents a basic XQuery expression and provides
several kinds of expressions. Each kind of expression is defined in terms of
other expressions (compositionality).
Operands with a higher precedence number bind more tightly than those with a lower precedence number. Operands listed at the same level are evaluated from left to right.
| Precedence Number | Syntax Constructs |
|---|---|
| 1 (lowest) | SortExpr |
| 2 | OrExpr |
| 3 | AndExpr |
| 4 | CompExpr,
FLWORExpr,
IfExpr |
| 5 | RangeExpr |
| 6 | AdditiveExpr |
| 7 | MultiplicativeExpr |
| 8 | UnionExpr |
| 9 | IntersectExceptExpr |
| 10 | TreatExpr |
| 11 | UnaryExpr |
| 12 (highest) | Constructor,
PathExpr |
See the pages of the various expressions for examples.
The following construct(s) refer to this construct:
