在表名称中使用连字符 (-) 创建 Hive 表

Question

I need to create a table in Hive (v-1.2.2) with hyphen (-) in table name.

Reading Hive documentation , I tried to round table name with backticks (`) and it fails.

Query Executed

CREATE EXTERNAL TABLE `kpisample_MarkContent_db786910-bd59-11e7-8329-9f28c9dd3095` STORED AS AVRO LOCATION '/prod/kpisample/dataset=0c253b00-2f04-11e6-ae13-d90f2a2beea0/KPI_id=MarkContent/year=2019/month=11/day=18/hour=4/' TBLPROPERTIES ('avro.schema.url'='/prod/schemas/kpisample/dataset=0c253b00-2f04-11e6-ae13-d90f2a2beea0/KPI_id=MarkContent/kpisetting_MarkContent.avsc');

Fail Message

FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. org.apache.hadoop.hive.ql.metadata.HiveException: [kpisample_MarkContent_db786910-bd59-11e7-8329-9f28c9dd3095]: is not a valid table name

Is there any way to do so?

Appreciate your help.

Answer 1

Actually, table name containing - is not legitimate.
The source code taken from org.apache.hadoop.hive.metastore.MetaStoreUtils shows that only characters , numbers and underscores are allowed in table names:

/**
   * validateName
   *
   * Checks the name conforms to our standars which are: "[a-zA-z_0-9]+". checks
   * this is just characters and numbers and _
   * ...
   */
  static public boolean validateName(String name) {
    Pattern tpat = Pattern.compile("[\\w_]+");
    Matcher m = tpat.matcher(name);
    if (m.matches()) {
      return true;
    }
    return false;
  }