n<span class="token operator">: </span><a href="../-window-frame-bound-direction/index.html">WindowFrameBoundDirection</a></span></span><span class="token punctuation">)</span> : <a href="../-window-frame-bound/index.html">WindowFrameBound</a></div><p class="paragraph">Represents UNBOUNDED PRECEDING or FOLLOWING window function frame bound. <a href="../../../exposed-core/org.jetbrains.exposed.v1.core/-unbounded-window-frame-bound/direction.html">direction</a> specifies whether first or last partition row wi