Merge pull request #392 from cockroachdb/hexadecimal-literals

hexidecimal string and numeric literals

Author: jseldess

int.md

@@ -20,7 +20,15 @@ In CockroachDB, the following are aliases for `INT`:
 
 ## Format
 
-When inserting into an `INT` column, format the value as `12345`.
+An `INT` column accepts numeric literals and hexadecimal-encoded numeric literals.
+
+### Numeric Literal
+
+When inserting a numeric literal into an `INT` column, format the value as `12345`.
+
+### Hexadecimal-Encoded Numeric Literal
+
+When inserting a hexadecimal-encoded numeric literal into a `INT` column, format the value as hexadecimal digits preceded by `0x`. For example, `0xcafe1111` corresponds to the numeric literal `3405648145`.
 
 ## Size
 

string.md

@@ -36,15 +36,19 @@ When inserting a string:
 
 ## Format
 
-A `STRING` column accepts both string literals and escape strings. 
+A `STRING` column accepts Unicode string literals, hexadecimal string literals, and escape strings. 
 
 ### String Literal
 
 When inserting a string literal into a `STRING` column, format the value as Unicode characters within single quotes, e.g., `'a1b2c3'`.
 
+### Hexadecimal-Encoded String Literal
+
+When inserting a hexadecimal-encoded string literal into a `STRING` column, format the value as `x` or `X` followed by hexadecimal digits in single quotes. For example, `x'636174'` or `X'636174'` correspond to the Unicode string literal `'cat'`.
+
 ### Escape String
 
-When inserting an escape string into a `STRING` column, use either `e` or `E` and followed by one or more of the following backslash escape sequences within single quotes:   
+When inserting an escape string into a `STRING` column, format the value as `e` or `E` followed by one or more of the following backslash escape sequences within single quotes:   
 
 Backslash Escape Sequence | Interpretation
 --------------------------|---------------