kiszk commented on a change in pull request #28451:
URL: https://github.com/apache/spark/pull/28451#discussion_r420182915
##########
File path: docs/sql-ref-literals.md
##########
@@ -71,128 +68,114 @@ SELECT 'it\'s $10.' AS col;
+---------+
|It's $10.|
+---------+
-{% endhighlight %}
+```
### Binary Literal
A binary literal is used to specify a byte sequence value.
#### Syntax
-{% highlight sql %}
-X { 'c [ ... ]' | "c [ ... ]" }
-{% endhighlight %}
+```sql
+X { 'num [ ... ]' | "num [ ... ]" }
+```
+
+#### Parameters
-#### <em>Parameters</em>
+* **num**
-<dl>
- <dt><code><em>c</em></code></dt>
- <dd>
- One character from the character set.
- </dd>
-</dl>
+ Any hexadecimal number from 0 to F.
-#### <em>Examples</em>
+#### Examples
-{% highlight sql %}
+```sql
SELECT X'123456' AS col;
+----------+
| col|
+----------+
|[12 34 56]|
+----------+
-{% endhighlight %}
+```
### Null Literal
A null literal is used to specify a null value.
#### Syntax
-{% highlight sql %}
+```sql
NULL
-{% endhighlight %}
+```
#### Examples
-{% highlight sql %}
+```sql
SELECT NULL AS col;
+----+
| col|
+----+
|NULL|
+----+
-{% endhighlight %}
+```
### Boolean Literal
A boolean literal is used to specify a boolean value.
#### Syntax
-{% highlight sql %}
+```sql
TRUE | FALSE
-{% endhighlight %}
+```
#### Examples
-{% highlight sql %}
+```sql
SELECT TRUE AS col;
+----+
| col|
+----+
|true|
+----+
-{% endhighlight %}
+```
### Numeric Literal
A numeric literal is used to specify a fixed or floating-point number.
#### Integral Literal
-#### Syntax
+##### Syntax
-{% highlight sql %}
+```sql
[ + | - ] digit [ ... ] [ L | S | Y ]
-{% endhighlight %}
+```
-#### Parameters
+##### Parameters
+
+* **digit**
-<dl>
- <dt><code><em>digit</em></code></dt>
- <dd>
Any numeral from 0 to 9.
- </dd>
-</dl>
-<dl>
- <dt><code><em>L</em></code></dt>
- <dd>
- Case insensitive, indicates <code>BIGINT</code>, which is a 8-byte signed
integer number.
- </dd>
-</dl>
-<dl>
- <dt><code><em>S</em></code></dt>
- <dd>
- Case insensitive, indicates <code>SMALLINT</code>, which is a 2-byte
signed integer number.
- </dd>
-</dl>
-<dl>
- <dt><code><em>Y</em></code></dt>
- <dd>
- Case insensitive, indicates <code>TINYINT</code>, which is a 1-byte signed
integer number.
- </dd>
-</dl>
-<dl>
- <dt><code><em>default (no postfix)</em></code></dt>
- <dd>
+
+* **L**
+
+ Case insensitive, indicates `BIGINT`, which is a 8-byte signed integer
number.
Review comment:
nit: `an 8-byte`
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