func newSargOr(expr *expression.Or) *sargOr {
rv := &sargOr{}
rv.sarg = func(expr2 expression.Expression) (Spans, error) {
if expr.EquivalentTo(expr2) {
return _SELF_SPANS, nil
}
spans := make(Spans, 0, len(expr.Operands()))
for _, child := range expr.Operands() {
cspans := SargFor(child, expr2)
if len(cspans) > 0 {
spans = append(spans, cspans...)
}
}
return spans, nil
}
return rv
}
