mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-22 07:31:57 +00:00
777 lines
37 KiB
HTML
777 lines
37 KiB
HTML
<html> <!-- TODO If I write DOCTYPE HTML something changes but I don't know what. -->
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<head>
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<meta charset="UTF-8">
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<link rel="icon" href="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1NCIgaGVpZ2h0PSI0OCIgdmlld0JveD0iMCAwIDkgOCI+PHN0eWxlPi5ve2ZpbGw6I2ZjMH0ucntmaWxsOnJlZH08L3N0eWxlPjxwYXRoIGQ9Ik0wLDcgaDEgdjEgaC0xIHoiIGNsYXNzPSJyIi8+PHBhdGggZD0iTTAsMCBoMSB2NyBoLTEgeiIgY2xhc3M9Im8iLz48cGF0aCBkPSJNMiwwIGgxIHY4IGgtMSB6IiBjbGFzcz0ibyIvPjxwYXRoIGQ9Ik00LDAgaDEgdjggaC0xIHoiIGNsYXNzPSJvIi8+PHBhdGggZD0iTTYsMCBoMSB2OCBoLTEgeiIgY2xhc3M9Im8iLz48cGF0aCBkPSJNOCwzLjI1IGgxIHYxLjUgaC0xIHoiIGNsYXNzPSJvIi8+PC9zdmc+">
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<title>ClickHouse Query</title>
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<!-- Code Style:
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Do not use any JavaScript or CSS frameworks or preprocessors.
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This HTML page should not require any build systems (node.js, npm, gulp, etc.)
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This HTML page should not be minified, instead it should be reasonably minimalistic by itself.
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This HTML page should not load any external resources on load.
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(CSS and JavaScript must be embedded directly to the page. No external fonts or images should be loaded).
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This UI should look as lightweight, clean and fast as possible.
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All UI elements must be aligned in pixel-perfect way.
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There should not be any animations.
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No unexpected changes in positions of elements while the page is loading.
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Navigation by keyboard should work.
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64-bit numbers must display correctly.
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-->
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<!-- Development Roadmap:
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1. Support readonly servers.
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Check if readonly = 1 (with SELECT FROM system.settings) to avoid sending settings. It can be done once on address/credentials change.
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It can be done in background, e.g. wait 100 ms after address/credentials change and do the check.
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Also it can provide visual indication that credentials are correct.
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-->
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<style type="text/css">
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:root {
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--background-color: #DDF8FF; /* Or #FFFBEF; actually many pastel colors look great for light theme. */
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--element-background-color: #FFF;
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--bar-color: #F8F4F0; /* Light bar in background of table cells. */
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--border-color: #EEE;
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--shadow-color: rgba(0, 0, 0, 0.1);
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--button-color: #FFAA00; /* Orange on light-cyan is especially good. */
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--text-color: #000;
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--button-active-color: #F00;
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--button-active-text-color: #FFF;
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--misc-text-color: #888;
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--error-color: #FEE; /* Light-pink on light-cyan is so neat, I even want to trigger errors to see this cool combination of colors. */
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--table-header-color: #F8F8F8;
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--table-hover-color: #FFF8EF;
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--null-color: #A88;
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--link-color: #06D;
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--logo-color: #CEE;
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--logo-color-active: #BDD;
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}
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[data-theme="dark"] {
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--background-color: #000;
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--element-background-color: #102030;
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--bar-color: #182838;
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--border-color: #111;
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--shadow-color: rgba(255, 255, 255, 0.1);
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--text-color: #CCC;
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--button-color: #FFAA00;
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--button-text-color: #000;
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--button-active-color: #F00;
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--button-active-text-color: #FFF;
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--misc-text-color: #888;
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--error-color: #400;
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--table-header-color: #102020;
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--table-hover-color: #003333;
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--null-color: #A88;
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--link-color: #4BDAF7;
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--logo-color: #222;
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--logo-color-active: #333;
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}
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html, body
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{
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/* Personal choice. */
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font-family: Liberation Sans, DejaVu Sans, sans-serif, Noto Color Emoji, Apple Color Emoji, Segoe UI Emoji;
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background: var(--background-color);
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color: var(--text-color);
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}
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/* Otherwise Webkit based browsers will display ugly border on focus. */
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textarea, input, button
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{
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outline: none;
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border: none;
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color: var(--text-color);
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}
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/* Otherwise scrollbar may appear dynamically and it will alter viewport height,
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then relative heights of elements will change suddenly, and it will break overall impression. */
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/* html
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{
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overflow-x: scroll;
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}*/
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div
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{
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width: 100%;
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}
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.monospace
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{
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/* Prefer fonts that have full hinting info. This is important for non-retina displays.
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Also I personally dislike "Ubuntu" font due to the similarity of 'r' and 'г' (it looks very ignorant). */
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font-family: Liberation Mono, DejaVu Sans Mono, MonoLisa, Consolas, Monospace;
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}
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.monospace-table
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{
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/* Liberation is worse than DejaVu for block drawing characters. */
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font-family: DejaVu Sans Mono, Liberation Mono, MonoLisa, Consolas, Monospace;
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}
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.shadow
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{
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box-shadow: 0 0 1rem var(--shadow-color);
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}
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input, textarea
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{
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border: 1px solid var(--border-color);
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/* The font must be not too small (to be inclusive) and not too large (it's less practical and make general feel of insecurity) */
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font-size: 11pt;
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padding: 0.25rem;
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background-color: var(--element-background-color);
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}
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#query
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{
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/* Make enough space for even huge queries. */
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height: 20%;
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width: 100%;
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}
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#inputs
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{
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white-space: nowrap;
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width: 100%;
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}
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#url
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{
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width: 70%;
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}
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#user
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{
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width: 15%;
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}
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#password
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{
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width: 15%;
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}
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#run_div
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{
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margin-top: 1rem;
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}
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#run
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{
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color: var(--button-text-color);
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background-color: var(--button-color);
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padding: 0.25rem 1rem;
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cursor: pointer;
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font-weight: bold;
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font-size: 100%; /* Otherwise button element will have lower font size. */
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}
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#run:hover, #run:focus
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{
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color: var(--button-active-text-color);
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background-color: var(--button-active-color);
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}
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#stats
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{
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float: right;
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color: var(--misc-text-color);
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}
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#toggle-light, #toggle-dark
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{
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float: right;
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padding-right: 0.5rem;
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cursor: pointer;
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}
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.hint
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{
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color: var(--misc-text-color);
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}
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#data_div
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{
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margin-top: 1rem;
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}
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#data-table
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{
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border-collapse: collapse;
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border-spacing: 0;
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/* I need pixel-perfect alignment but not sure the following is correct, please help */
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min-width: calc(100vw - 2rem);
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}
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/* Will be displayed when user specified custom format. */
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#data-unparsed
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{
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background-color: var(--element-background-color);
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margin-top: 0rem;
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padding: 0.25rem 0.5rem;
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display: none;
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}
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td
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{
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background-color: var(--element-background-color);
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white-space: nowrap;
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/* For wide tables any individual column will be no more than 50% of page width. */
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max-width: 50vw;
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/* The content is cut unless you hover. */
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overflow: hidden;
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padding: 0.25rem 0.5rem;
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border: 1px solid var(--border-color);
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white-space: pre;
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}
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td.right
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{
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text-align: right;
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}
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th
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{
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padding: 0.25rem 0.5rem;
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text-align: middle;
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background-color: var(--table-header-color);
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border: 1px solid var(--border-color);
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}
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/* The row under mouse pointer is highlight for better legibility. */
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tr:hover, tr:hover td
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{
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background-color: var(--table-hover-color);
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}
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tr:hover
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{
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box-shadow: 0 0 1rem rgba(0, 0, 0, 0.1);
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}
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#error
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{
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background: var(--error-color);
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white-space: pre-wrap;
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padding: 0.5rem 1rem;
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display: none;
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}
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/* When mouse pointer is over table cell, will display full text (with wrap) instead of cut.
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TODO Find a way to make it work on touch devices. */
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td.left:hover
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{
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white-space: pre-wrap;
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}
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/* The style for SQL NULL */
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.null
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{
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color: var(--null-color);
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}
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#hourglass
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{
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display: none;
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padding-left: 1rem;
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font-size: 110%;
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color: #888;
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}
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#check-mark
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{
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display: none;
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padding-left: 1rem;
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font-size: 110%;
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color: #080;
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}
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a, a:visited
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{
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color: var(--link-color);
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text-decoration: none;
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}
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/* This is for graph in svg */
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text
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{
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font-size: 14px;
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fill: var(--text-color);
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}
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.node rect
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{
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fill: var(--element-background-color);
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filter: drop-shadow(.2rem .2rem .2rem var(--shadow-color));
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}
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.edgePath path
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{
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stroke: var(--text-color);
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}
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marker
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{
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fill: var(--text-color);
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}
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#logo
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{
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fill: var(--logo-color);
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}
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#logo:hover
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{
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fill: var(--logo-color-active);
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}
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#logo-container
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{
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text-align: center;
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margin-top: 5em;
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}
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</style>
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</head>
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<body>
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<div id="inputs">
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<input class="monospace shadow" id="url" type="text" value="http://localhost:8123/" /><input class="monospace shadow" id="user" type="text" value="default" /><input class="monospace shadow" id="password" type="password" />
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</div>
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<div>
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<textarea autofocus spellcheck="false" class="monospace shadow" id="query"></textarea>
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</div>
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<div id="run_div">
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<button class="shadow" id="run">Run</button>
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<span class="hint"> (Ctrl/Cmd+Enter)</span>
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<span id="hourglass">⧗</span>
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<span id="check-mark">✔</span>
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<span id="stats"></span>
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<span id="toggle-dark">🌑</span><span id="toggle-light">🌞</span>
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</div>
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<div id="data_div">
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<table class="monospace-table shadow" id="data-table"></table>
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<pre class="monospace-table shadow" id="data-unparsed"></pre>
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</div>
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<svg id="graph" fill="none"></svg>
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<p id="error" class="monospace shadow">
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</p>
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<p id="logo-container">
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<a href="https://clickhouse.com/">
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<svg id="logo" width="50%" viewBox="0 0 180 28" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<title>Powered by ClickHouse</title>
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<g transform="translate(21, 0)">
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<path d="M136.379248,19.4286849 C135.765636,19.9144267 135.063746,20.2807344 134.311043,20.5080563 C133.397586,20.8060079 132.439751,20.9505822 131.477601,20.9357317 C129.484022,21.0457076 127.539179,20.3034303 126.141631,18.899182 C124.819952,17.3656124 124.152831,15.3875844 124.280246,13.3801321 C124.263071,12.3194805 124.438164,11.2643153 124.797297,10.2642109 C125.111353,9.39844373 125.596363,8.60246478 126.224359,7.92217864 C126.799559,7.29363386 127.504769,6.79365416 128.292565,6.4558628 C129.13245,6.11650376 130.03203,5.94349361 130.939868,5.94672536 C131.84844,5.93569173 132.749586,6.10900306 133.587171,6.4558628 C134.355957,6.77570775 135.026242,7.28828126 135.531284,7.94254414 C136.069381,8.66407624 136.423989,9.5021104 136.565387,10.3864039 C136.756685,11.5054228 136.756685,12.6480576 136.565387,13.7670765 L126.720728,13.7670765 C126.831033,17.1749031 128.464915,18.8788165 131.622376,18.8788165 C132.38185,18.8941966 133.138087,18.7769813 133.856038,18.532603 C134.495821,18.304128 135.106567,18.0034291 135.676058,17.6365211 L136.379248,19.4286849 Z M131.022596,7.73888916 C130.017668,7.7293132 129.052936,8.12697327 128.354611,8.83862604 C127.526752,9.75405949 127.031943,10.9148261 126.948231,12.1378367 L134.331725,12.1378367 C134.534684,10.9751452 134.259342,9.78072052 133.566489,8.81826055 C132.931983,8.09270485 131.993938,7.6946933 131.022596,7.73888916 Z" id="Shape"></path>
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</g>
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</svg>
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||
</a>
|
||
</p>
|
||
</body>
|
||
|
||
<script type="text/javascript">
|
||
|
||
/// Incremental request number. When response is received,
|
||
/// if it's request number does not equal to the current request number, response will be ignored.
|
||
/// This is to avoid race conditions.
|
||
let request_num = 0;
|
||
|
||
/// Save query in history only if it is different.
|
||
let previous_query = '';
|
||
|
||
const current_url = new URL(window.location);
|
||
|
||
const server_address = current_url.searchParams.get('url');
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||
if (server_address) {
|
||
document.getElementById('url').value = server_address;
|
||
} else if (location.protocol != 'file:') {
|
||
/// Substitute the address of the server where the page is served.
|
||
document.getElementById('url').value = location.origin;
|
||
}
|
||
|
||
/// Substitute user name if it's specified in the query string
|
||
const user_from_url = current_url.searchParams.get('user');
|
||
if (user_from_url) {
|
||
document.getElementById('user').value = user_from_url;
|
||
}
|
||
|
||
function postImpl(posted_request_num, query)
|
||
{
|
||
const user = document.getElementById('user').value;
|
||
const password = document.getElementById('password').value;
|
||
|
||
const server_address = document.getElementById('url').value;
|
||
|
||
const url = server_address +
|
||
(server_address.indexOf('?') >= 0 ? '&' : '?') +
|
||
/// Ask server to allow cross-domain requests.
|
||
'add_http_cors_header=1' +
|
||
'&user=' + encodeURIComponent(user) +
|
||
'&password=' + encodeURIComponent(password) +
|
||
'&default_format=JSONCompact' +
|
||
/// Safety settings to prevent results that browser cannot display.
|
||
'&max_result_rows=1000&max_result_bytes=10000000&result_overflow_mode=break';
|
||
|
||
const xhr = new XMLHttpRequest;
|
||
|
||
xhr.open('POST', url, true);
|
||
|
||
xhr.onreadystatechange = function()
|
||
{
|
||
if (posted_request_num != request_num) {
|
||
return;
|
||
} else if (this.readyState === XMLHttpRequest.DONE) {
|
||
renderResponse(this.status, this.response);
|
||
|
||
/// The query is saved in browser history (in state JSON object)
|
||
/// as well as in URL fragment identifier.
|
||
if (query != previous_query) {
|
||
const state = {
|
||
query: query,
|
||
status: this.status,
|
||
response: this.response.length > 100000 ? null : this.response /// Lower than the browser's limit.
|
||
};
|
||
const title = "ClickHouse Query: " + query;
|
||
|
||
let history_url = window.location.pathname + '?user=' + encodeURIComponent(user);
|
||
if (server_address != location.origin) {
|
||
/// Save server's address in URL if it's not identical to the address of the play UI.
|
||
history_url += '&url=' + encodeURIComponent(server_address);
|
||
}
|
||
history_url += '#' + window.btoa(query);
|
||
|
||
if (previous_query == '') {
|
||
history.replaceState(state, title, history_url);
|
||
} else {
|
||
history.pushState(state, title, history_url);
|
||
}
|
||
document.title = title;
|
||
previous_query = query;
|
||
}
|
||
} else {
|
||
//console.log(this);
|
||
}
|
||
}
|
||
|
||
document.getElementById('check-mark').style.display = 'none';
|
||
document.getElementById('hourglass').style.display = 'inline';
|
||
|
||
xhr.send(query);
|
||
}
|
||
|
||
function renderResponse(status, response) {
|
||
document.getElementById('hourglass').style.display = 'none';
|
||
|
||
if (status === 200) {
|
||
let json;
|
||
try { json = JSON.parse(response); } catch (e) {}
|
||
if (json !== undefined && json.statistics !== undefined) {
|
||
renderResult(json);
|
||
} else {
|
||
renderUnparsedResult(response);
|
||
}
|
||
document.getElementById('check-mark').style.display = 'inline';
|
||
} else {
|
||
/// TODO: Proper rendering of network errors.
|
||
renderError(response);
|
||
}
|
||
}
|
||
|
||
window.onpopstate = function(event) {
|
||
if (!event.state) {
|
||
return;
|
||
}
|
||
document.getElementById('query').value = event.state.query;
|
||
if (!event.state.response) {
|
||
clear();
|
||
return;
|
||
}
|
||
renderResponse(event.state.status, event.state.response);
|
||
};
|
||
|
||
if (window.location.hash) {
|
||
document.getElementById('query').value = window.atob(window.location.hash.substr(1));
|
||
}
|
||
|
||
function post()
|
||
{
|
||
++request_num;
|
||
let query = document.getElementById('query').value;
|
||
postImpl(request_num, query);
|
||
}
|
||
|
||
document.getElementById('run').onclick = function()
|
||
{
|
||
post();
|
||
}
|
||
|
||
document.onkeydown = function(event)
|
||
{
|
||
/// Firefox has code 13 for Enter and Chromium has code 10.
|
||
if ((event.metaKey || event.ctrlKey) && (event.keyCode == 13 || event.keyCode == 10)) {
|
||
post();
|
||
}
|
||
}
|
||
|
||
function clear()
|
||
{
|
||
let table = document.getElementById('data-table');
|
||
while (table.firstChild) {
|
||
table.removeChild(table.lastChild);
|
||
}
|
||
|
||
let graph = document.getElementById('graph');
|
||
while (graph.firstChild) {
|
||
graph.removeChild(graph.lastChild);
|
||
}
|
||
graph.style.display = 'none';
|
||
|
||
document.getElementById('data-unparsed').innerText = '';
|
||
document.getElementById('data-unparsed').style.display = 'none';
|
||
|
||
document.getElementById('error').innerText = '';
|
||
document.getElementById('error').style.display = 'none';
|
||
|
||
document.getElementById('stats').innerText = '';
|
||
|
||
document.getElementById('hourglass').style.display = 'none';
|
||
document.getElementById('check-mark').style.display = 'none';
|
||
|
||
document.getElementById('logo-container').style.display = 'block';
|
||
}
|
||
|
||
function renderResult(response)
|
||
{
|
||
clear();
|
||
|
||
let stats = document.getElementById('stats');
|
||
stats.innerText = 'Elapsed: ' + response.statistics.elapsed.toFixed(3) + " sec, read " + response.statistics.rows_read + " rows.";
|
||
|
||
/// We can also render graphs if user performed EXPLAIN PIPELINE graph=1.
|
||
if (response.data.length > 3 && response.data[0][0] === "digraph" && document.getElementById('query').value.match(/^\s*EXPLAIN/i)) {
|
||
renderGraph(response);
|
||
} else {
|
||
renderTable(response);
|
||
}
|
||
}
|
||
|
||
function renderTable(response)
|
||
{
|
||
let thead = document.createElement('thead');
|
||
for (let idx in response.meta) {
|
||
let th = document.createElement('th');
|
||
const name = document.createTextNode(response.meta[idx].name);
|
||
th.appendChild(name);
|
||
thead.appendChild(th);
|
||
}
|
||
|
||
/// To prevent hanging the browser, limit the number of cells in a table.
|
||
/// It's important to have the limit on number of cells, not just rows, because tables may be wide or narrow.
|
||
const max_rows = 10000 / response.meta.length;
|
||
let row_num = 0;
|
||
|
||
const column_is_number = response.meta.map(elem => !!elem.type.match(/^(U?Int|Decimal|Float)/));
|
||
const column_maximums = column_is_number.map((elem, idx) => elem ? Math.max(...response.data.map(row => row[idx])) : 0);
|
||
const column_minimums = column_is_number.map((elem, idx) => elem ? Math.min(...response.data.map(row => Math.max(0, row[idx]))) : 0);
|
||
const column_need_render_bars = column_is_number.map((elem, idx) => column_maximums[idx] > 0 && column_maximums[idx] > column_minimums[idx]);
|
||
|
||
let tbody = document.createElement('tbody');
|
||
for (let row_idx in response.data) {
|
||
let tr = document.createElement('tr');
|
||
for (let col_idx in response.data[row_idx]) {
|
||
let td = document.createElement('td');
|
||
let cell = response.data[row_idx][col_idx];
|
||
|
||
let is_null = (cell === null);
|
||
let is_link = false;
|
||
|
||
/// Test: SELECT number, toString(number) AS str, number % 2 ? number : NULL AS nullable, range(number) AS arr, CAST((['hello', 'world'], [number, number % 2]) AS Map(String, UInt64)) AS map FROM numbers(10)
|
||
let text;
|
||
if (is_null) {
|
||
text = 'ᴺᵁᴸᴸ';
|
||
} else if (typeof(cell) === 'object') {
|
||
text = JSON.stringify(cell);
|
||
} else {
|
||
text = cell;
|
||
|
||
/// If it looks like URL, create a link. This is for convenience.
|
||
if (typeof(cell) == 'string' && cell.match(/^https?:\/\/\S+$/)) {
|
||
is_link = true;
|
||
}
|
||
}
|
||
|
||
let node = document.createTextNode(text);
|
||
if (is_link) {
|
||
let link = document.createElement('a');
|
||
link.appendChild(node);
|
||
link.href = text;
|
||
link.setAttribute('target', '_blank');
|
||
node = link;
|
||
}
|
||
|
||
td.className = column_is_number[col_idx] ? 'right' : 'left';
|
||
if (is_null) {
|
||
td.className += ' null';
|
||
}
|
||
|
||
/// If it's a number, render bar in background.
|
||
if (column_need_render_bars[col_idx] && text > 0) {
|
||
const ratio = 100 * text / column_maximums[col_idx];
|
||
|
||
let div = document.createElement('div');
|
||
|
||
div.style.width = '100%';
|
||
div.style.background = `linear-gradient(to right,
|
||
var(--bar-color) 0%, var(--bar-color) ${ratio}%,
|
||
transparent ${ratio}%, transparent 100%)`;
|
||
|
||
div.appendChild(node);
|
||
node = div;
|
||
}
|
||
|
||
td.appendChild(node);
|
||
tr.appendChild(td);
|
||
}
|
||
tbody.appendChild(tr);
|
||
|
||
++row_num;
|
||
if (row_num >= max_rows) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
let table = document.getElementById('data-table');
|
||
table.appendChild(thead);
|
||
table.appendChild(tbody);
|
||
}
|
||
|
||
/// A function to render raw data when non-default format is specified.
|
||
function renderUnparsedResult(response)
|
||
{
|
||
clear();
|
||
let data = document.getElementById('data-unparsed')
|
||
|
||
if (response === '') {
|
||
/// TODO: Fade or remove previous result when new request will be performed.
|
||
response = 'Ok.';
|
||
}
|
||
|
||
data.innerText = response;
|
||
/// inline-block make width adjust to the size of content.
|
||
data.style.display = 'inline-block';
|
||
}
|
||
|
||
function renderError(response)
|
||
{
|
||
clear();
|
||
document.getElementById('error').innerText = response ? response : "No response.";
|
||
document.getElementById('error').style.display = 'block';
|
||
document.getElementById('logo-container').style.display = 'none';
|
||
}
|
||
|
||
/// Huge JS libraries should be loaded only if needed.
|
||
function loadJS(src, integrity) {
|
||
return new Promise((resolve, reject) => {
|
||
const script = document.createElement('script');
|
||
script.src = src;
|
||
if (integrity) {
|
||
script.crossOrigin = 'anonymous';
|
||
script.integrity = integrity;
|
||
} else {
|
||
console.warn('no integrity for', src)
|
||
}
|
||
script.addEventListener('load', function() { resolve(true); });
|
||
document.head.appendChild(script);
|
||
});
|
||
}
|
||
|
||
let load_dagre_promise;
|
||
function loadDagre() {
|
||
if (load_dagre_promise) { return load_dagre_promise; }
|
||
|
||
load_dagre_promise = Promise.all([
|
||
loadJS('https://dagrejs.github.io/project/dagre/v0.8.5/dagre.min.js',
|
||
'sha384-2IH3T69EIKYC4c+RXZifZRvaH5SRUdacJW7j6HtE5rQbvLhKKdawxq6vpIzJ7j9M'),
|
||
loadJS('https://dagrejs.github.io/project/graphlib-dot/v0.6.4/graphlib-dot.min.js',
|
||
'sha384-Q7oatU+b+y0oTkSoiRH9wTLH6sROySROCILZso/AbMMm9uKeq++r8ujD4l4f+CWj'),
|
||
loadJS('https://dagrejs.github.io/project/dagre-d3/v0.6.4/dagre-d3.min.js',
|
||
'sha384-9N1ty7Yz7VKL3aJbOk+8ParYNW8G5W+MvxEfFL9G7CRYPmkHI9gJqyAfSI/8190W'),
|
||
loadJS('https://cdn.jsdelivr.net/npm/d3@7.0.0',
|
||
'sha384-S+Kf0r6YzKIhKA8d1k2/xtYv+j0xYUU3E7+5YLrcPVab6hBh/r1J6cq90OXhw80u'),
|
||
]);
|
||
|
||
return load_dagre_promise;
|
||
}
|
||
|
||
async function renderGraph(response)
|
||
{
|
||
await loadDagre();
|
||
|
||
/// https://github.com/dagrejs/dagre-d3/issues/131
|
||
const dot = response.data.reduce((acc, row) => acc + '\n' + row[0].replace(/shape\s*=\s*box/g, 'shape=rect'));
|
||
|
||
let graph = graphlibDot.read(dot);
|
||
graph.graph().rankdir = 'TB';
|
||
|
||
let render = new dagreD3.render();
|
||
|
||
let svg = document.getElementById('graph');
|
||
svg.style.display = 'block';
|
||
|
||
render(d3.select("#graph"), graph);
|
||
|
||
svg.style.width = graph.graph().width;
|
||
svg.style.height = graph.graph().height;
|
||
}
|
||
|
||
function setColorTheme(theme)
|
||
{
|
||
window.localStorage.setItem('theme', theme);
|
||
document.documentElement.setAttribute('data-theme', theme);
|
||
}
|
||
|
||
/// The choice of color theme is saved in browser.
|
||
let theme = window.localStorage.getItem('theme');
|
||
if (theme) {
|
||
setColorTheme(theme);
|
||
} else {
|
||
/// Obtain system-level user preference
|
||
let media_query_list = window.matchMedia('prefers-color-scheme: dark')
|
||
|
||
if (media_query_list.matches) {
|
||
/// Set without saving to localstorage
|
||
document.documentElement.setAttribute('data-theme', 'dark');
|
||
}
|
||
|
||
/// There is a rumor that on some computers, the theme is changing automatically on day/night.
|
||
media_query_list.addEventListener('change', function(e) {
|
||
if (e.matches) {
|
||
document.documentElement.setAttribute('data-theme', 'dark');
|
||
} else {
|
||
document.documentElement.setAttribute('data-theme', 'light');
|
||
}
|
||
});
|
||
}
|
||
|
||
document.getElementById('toggle-light').onclick = function()
|
||
{
|
||
setColorTheme('light');
|
||
}
|
||
|
||
document.getElementById('toggle-dark').onclick = function()
|
||
{
|
||
setColorTheme('dark');
|
||
}
|
||
</script>
|
||
</html>
|