Comparison expressions

Comparison expressions compare two values. XQuery provides three kinds of comparison expressions: value comparisons, general comparisons, and node comparisons.

Value comparisons
Value comparisons compare two atomic values. The value comparison operators include eq, ne, lt, le, gt, and ge.
General comparisons
A general comparison compares two sequences of any length to determine whether at least one item in the first sequence and one item in the second sequence satisfy the specified comparison. The general comparison operators are =, !=, <, <=, >, and >=.
Node comparisons
Node comparisons compare two nodes. Nodes can be compared to determine if they share the same identity or if one node precedes or follows another node in document order.

Parent topic: Expressions