`KeySpecifier`

KeySpecifier ::= (NCName | IntegerLiteral | ParenthesizedExpr | "*")

Appears in productions:

Appears in specifications:

XML Path Language (XPath) 3.1

3 Expressions
- 3.11 Maps and Arrays
  - 3.11.3 The Lookup Operator ("?") for Maps and Arrays
    3.11.3.1 Unary Lookup
1 XPath 3.1 Grammar
- 1.1 EBNF

XQuery 3.1: An XML Query Language

3 Expressions
- 3.11 Maps and Arrays
  - 3.11.3 The Lookup Operator ("?") for Maps and Arrays
    3.11.3.1 Unary Lookup
1 XQuery 3.1 Grammar
- 1.1 EBNF