PostgreSQL plan advice

<div class="demo"><div class="head"><b>PLAN ADVICE</b><span>same query</span></div><div class="stage advice"><div class="plan"><strong>planner</strong><div class="cell" id="plain">Seq Scan</div><small>orders</small></div><div class="switch">→</div><div class="plan"><strong>with advice</strong><div class="cell on" id="advised">Index Scan</div><small>orders_idx</small></div></div><div class="foot"><span id="advstatus">compare candidate plans</span><span>PG 19 beta</span></div></div>

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let n=0;function tick(){document.getElementById('plain').classList.toggle('on',!n);document.getElementById('advised').classList.toggle('on',!!n);document.getElementById('advstatus').textContent=n?'advice selects Index Scan':'planner selects Seq Scan';n=1-n}tick();const t=setInterval(tick,1100);document.querySelector('.demo').onclick=()=>{clearInterval(t);tick()}