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colOrder: ( ASC | DESC )
colNullOrder: (NULLS FIRST | NULLS LAST)           -- (Note: Available in Hive 2.1.0 and later)
orderBy: ORDER BY colName colOrder? colNullOrder? (',' colName colOrder? colNullOrder?)*
query: SELECT expression (',' expression)* FROM src orderBy

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The default sorting order is ascending (ASC).

In Hive 2.1.0 and later, specifying the null sorting order for each of the columns in the "order by" clause is supported. The default null sorting order for ASC order is NULLS FIRST, while the default null sorting order for DESC order is NULLS LAST.

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