More details about literals

docs/src/main/sphinx/language/types.md

@@ -49,9 +49,9 @@ Integer numbers can be expressed as numeric literals in the following formats:
   for decimal `9` or `0b101010` for decimal `42``.
 
 Underscore characters are ignored within literal values, and can be used to
-increase readability. For example, decimal integer `123_456.789_123` is
-equivalent to `123456.789123`. Preceding and trailing underscores are not
-permitted.
+increase readability. For example, decimal integer `123_456` is equivalent to 
+`123456`. Preceding underscores, trailing underscores, and consecutive underscores
+are not permitted.
 
 Integers are supported by the following data types.
 
@@ -83,8 +83,8 @@ Floating-point, fixed-precision numbers can be expressed as numeric literal
 using scientific notation such as `1.03e1` and are cast as `DOUBLE` data type.
 Underscore characters are ignored within literal values, and can be used to
 increase readability. For example, value `123_456.789e4` is equivalent to
-`123456.789e4`. Preceding underscores, trailing underscores, and underscores
-beside the comma (`.`) are not permitted.
+`123456.789e4`. Preceding underscores, trailing underscores, consecutive
+underscores, and underscores beside the comma (`.`) are not permitted.
 
 ### `REAL`
 
@@ -108,8 +108,8 @@ are supported by the `DECIMAL` data type.
 
 Underscore characters are ignored within literal values, and can be used to
 increase readability. For example, decimal `123_456.789_123` is equivalent to
-`123456.789123`. Preceding underscores, trailing underscores, and underscores
-beside the comma (`.`) are not permitted.
+`123456.789123`. Preceding underscores, trailing underscores, consecutive
+underscores, and underscores beside the comma (`.`) are not permitted.
 
 Leading zeros in literal values are permitted and ignored. For example,
 `000123.456` is equivalent to `123.456`.
@@ -178,6 +178,9 @@ The binary data has to use hexadecimal format. For example, the binary form of
 SELECT from_utf8(x'65683F');
 ```
 
+Binary literals ignore any whitespace characters. For example, the literal
+`X'FFFF 0FFF  3FFF FFFF'` is equivalent to `X'FFFF0FFF3FFFFFFF'`.
+
 :::{note}
 Binary strings with length are not yet supported: `varbinary(n)`
 :::