Selection

s[condition(x)](x:collection)

returns subcollection that satisfies condition

Examples:

s[value(x/Order/date/~data)?”1/1/2000”](x:child(/Customer))

returns collection of all vertices reachable from the root via a Customer edge that contain an order with a date in the new millenium

Condition Expression:

• Default: existential quantification

• universal quantification: all(i, pred(i))

• any datatype specific operation and comparison allowed including text containment, nearness etc.

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