Data Access
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Quoted Identifiers in Column Names

Quoted identifiers in the names of table columns are supported in Hive 0.13 and later. An identifier in SQL is a sequence of alphanumeric and underscore (_) characters surrounded by backtick (`) characters. Quoted identifiers in Hive are case-insensitive. In the following example, `x+y` and `a?b` are valid column names for a new table.

CREATE TABLE test (`x+y` String, `a?b` String); 

Quoted identifiers can be used anywhere a column name is expected, including table partitions and buckets:

CREATE TABLE partition_date-1 (key string, value string)
PARTITIONED BY (`dt+x` date, region int);

CREATE TABLE bucket_test(`key?1` string, value string)
CLUSTERED BY (`key?1`) into 5 buckets; 

Use a backtick character to escape a backtick character ( ``).

Enabling Quoted Identifiers

Set the configuration parameter to column in the hive-site.xml file to enable quoted identifiers in SQL column names. For Hive 0.13, the valid values are none and column. = column