Github user hyunsik commented on a diff in the pull request:
https://github.com/apache/tajo/pull/688#discussion_r37171714
--- Diff: tajo-docs/src/main/sphinx/sql_language/sql_expression.rst ---
@@ -16,16 +16,26 @@ A type cast converts a specified-typed data to
another-typed data. Tajo has two
CAST ( expression AS type )
expression::type
+In addition, several functions are provided for type conversion. Please
refer to `:doc:data_type_func_and_operators` and
`:doc:datetime_func_and_operators`.
-------------------------
-String Expressions
+String Constants
--- End diff --
'string literal' also would be good.
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