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<span style="color:#7a7c7d">-- PostgreSQL doesn't use # as comment</span>
<span style="font-weight:bold">select</span> jsoncol <span style="color:#3f8058">#></span> <span style="font-weight:bold">array</span>[<span style="color:#da4453">'p1</span><span style="color:#f44f4f">'</span>, <span style="color:#da4453">'p2</span><span style="color:#f44f4f">'</span>]
<span style="font-weight:bold">from</span> some_table
<span style="font-weight:bold">where</span> col<span style="color:#3f8058">#-</span><span style="color:#da4453">'{1, a}</span><span style="color:#f44f4f">'</span> <span style="color:#3f8058">@</span>? <span style="color:#da4453">'$.b ? (@ > 0)</span><span style="color:#f44f4f">'</span>;

<span style="font-weight:bold">SELECT</span>

  <span style="color:#da4453">'Single quoted string</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test01,
  <span style="color:#da4453">'Backslashes in single-quoted strings are interpreted literally and get no highlighting: \ </span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test02,
  <span style="color:#da4453">'The single-quote character can be escaped by using two of them: </span><span style="color:#3daee9">''</span><span style="color:#da4453"> This is highlighted.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test03,
  <span style="color:#da4453">'Line breaks</span>
<span style="color:#da4453">are allowed</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test04,

  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">Escape strings are introduced with an uppercase E…</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test11,
  <span style="color:#f44f4f">e'</span><span style="color:#f44f4f">or a lowercase e.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test12,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">Line breaks</span>
<span style="color:#f44f4f">are allowed</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test13,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">The single-quote character can be escaped by using two of them: </span><span style="color:#3daee9">''</span><span style="color:#f44f4f"> This is highlighted.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test14,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">They can have escapes like </span><span style="color:#3daee9">\t</span><span style="color:#f44f4f"> or three-digit octal </span><span style="color:#3daee9">\011</span><span style="color:#f44f4f"> or two-digit hexadecimal </span><span style="color:#3daee9">\x09</span><span style="color:#f44f4f">.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test15,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">Also the escape character itself and the single-quote can be escaped: </span><span style="color:#3daee9">\\</span><span style="color:#f44f4f"> and </span><span style="color:#3daee9">\'</span><span style="color:#f44f4f"> are highlighted.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test16,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">Non-defined combinations: Example: </span><span style="color:#3daee9">\y</span><span style="color:#f44f4f"> is highlighted because it’s treated as escaped characters and substituted by “y”. Even before a line break</span><span style="color:#3daee9">\</span>
<span style="color:#f44f4f">this is possible.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test17,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">Higher Unicode code points: Hex: Four-digit </span><span style="color:#3daee9">\u1234</span><span style="color:#f44f4f"> and eight-digit </span><span style="color:#3daee9">\U00001234</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test18,
  <span style="color:#f44f4f">E'</span><span style="color:#f44f4f">These escapes with “u” and “U” are the only one that are not error tolerant: </span><span style="color:#da4453;text-decoration:underline">\u</span><span style="color:#f44f4f">123 and </span><span style="color:#da4453;text-decoration:underline">\u</span><span style="color:#f44f4f">123 are highlighted as errors.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test19,

  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">Unicode escape strings are introduced with an uppercase U…</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test21,
  <span style="color:#f44f4f">u&amp;'</span><span style="color:#f44f4f">or a lowercase u.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test22,
  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">The single-quote character can be escaped by using two of them: </span><span style="color:#3daee9">''</span><span style="color:#f44f4f"> This is highlighted.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test23,
  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">Types of escape: </span><span style="color:#3daee9">\0061</span><span style="color:#f44f4f"> and </span><span style="color:#3daee9">\+000061</span><span style="color:#f44f4f"> and </span><span style="color:#3daee9">\\</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test24,
  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">All other usages of </span><span style="color:#da4453;text-decoration:underline">\</span><span style="color:#f44f4f"> are errors, including </span><span style="color:#da4453;text-decoration:underline">\</span><span style="color:#f44f4f">'</span> test25,
  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">Line breaks</span>
<span style="color:#f44f4f">are allowed</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test26,

  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">User-defined escape characters can be used instead of \ by specifying</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">UESCAPE</span> <span style="color:#da4453">'w</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test31,
  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">Here, \ behaves as normal character. Escape sequences: </span><span style="color:#3daee9">w0061</span><span style="color:#f44f4f"> and </span><span style="color:#3daee9">w+000061</span><span style="color:#f44f4f"> and </span><span style="color:#3daee9">ww</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">UESCAPE</span> <span style="color:#da4453">'w</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test32,
  <span style="color:#f44f4f">U&amp;'</span><span style="color:#f44f4f">Also work correctly for escape characters that have a special meaning in Regular Expressions: </span><span style="color:#3daee9">.0061</span><span style="color:#f44f4f"> </span><span style="color:#3daee9">.+000061</span><span style="color:#f44f4f"> and </span><span style="color:#3daee9">..</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">UESCAPE</span> <span style="color:#da4453">'.</span><span style="color:#f44f4f">'</span> <span style="font-weight:bold">AS</span> test33,

  <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> <span style="color:#27ae60">U&amp;"Unicode escape identifiers are introduces with an uppercase U…"</span>,
  <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> <span style="color:#27ae60">u&amp;"or a lowercase u."</span>,
  <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> <span style="color:#27ae60">U&amp;"The double-quote character can be escaped by using two of them: </span><span style="color:#3daee9">""</span><span style="color:#27ae60"> This is highlighted."</span>,
  <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> <span style="color:#27ae60">U&amp;"Types of escape: </span><span style="color:#3daee9">\0061</span><span style="color:#27ae60"> and </span><span style="color:#3daee9">\+000061</span><span style="color:#27ae60"> and </span><span style="color:#3daee9">\\</span><span style="color:#27ae60">"</span>,
  <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> <span style="color:#27ae60">U&amp;"All other usages of </span><span style="color:#da4453;text-decoration:underline">\</span><span style="color:#27ae60"> are errors, including </span><span style="color:#da4453;text-decoration:underline">\</span><span style="color:#27ae60">"</span>,
  <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> <span style="color:#27ae60">U&amp;"Line breaks</span>
<span style="color:#27ae60">are allowed"</span>

  <span style="color:#8e44ad">power</span>(<span style="color:#f67400">2</span>, <span style="color:#f67400">3</span>) <span style="font-weight:bold">AS</span> test31,            <span style="color:#7a7c7d">-- PostgreSQL Build-in functions (like “power”) are highlighted when followed by an opening parenthesis…</span>
  power <span style="font-weight:bold">AS</span> test32, <span style="color:#f67400">0</span> <span style="font-weight:bold">AS</span> power,      <span style="color:#7a7c7d">-- …but not highlighted if used as identifier.</span>
  <span style="color:#0099ff;font-weight:bold">ST_PointOnSurface</span>(way) <span style="font-weight:bold">AS</span> test33, <span style="color:#7a7c7d">-- PostGIS functions are highlighted as extensions.</span>

  <span style="color:#7a7c7d">-- User-defined functions get no special highlighting:</span>
  testpower(<span style="color:#f67400">2</span>, <span style="color:#f67400">3</span>) <span style="font-weight:bold">AS</span> test34,

  foo <span style="font-weight:bold">AS</span> bar

<span style="font-weight:bold">FROM</span> mytable;
</pre></body></html>