li> <a href="tech.v3.dataset.html#var-sort-by-column">sort-by-column</a> </li><li> <a href="tech.v3.dataset.html#var-tail">tail</a> </li><li> <a href="tech.v3.dataset.html#var-take-nth">take-nth</a> </li><li> <a href="tech.v3.dataset.html#var-unique-by">unique-by</a> </li><li> <a href="tech.v3.dataset.html#var-unique-by-column">unique-by-column</a> </li><li> <a href="tech.v3.dataset.html#var-unordered-select">unordered-select</a> </li><li> <a href="tech.v3.dataset.html#var-unroll-column">unroll-column</a> <