Hive Alter table change Column Name

Question

I am trying to rename a columnName in Hive. Is there a way to rename column name in Hive .

tableA (column1 ,_c1,_c2) to tableA(column1,column2,column3) ??

Answer 1

Command works only if "use" -command has been first used to define the database where working in. Table column renaming syntax using DATABASE.TABLE throws error and does not work. Version: HIVE 0.12.

EXAMPLE:

hive> ALTER TABLE databasename.tablename CHANGE old_column_name new_column_name;

  MismatchedTokenException(49!=90)
        at org.antlr.runtime.BaseRecognizer.recoverFromMismatchedToken(BaseRecognizer.java:617)
        at org.antlr.runtime.BaseRecognizer.match(BaseRecognizer.java:115)
        at org.apache.hadoop.hive.ql.parse.HiveParser.alterStatementSuffixExchangePartition(HiveParser.java:11492)
        ...

hive> use databasename;

hive> ALTER TABLE tablename CHANGE old_column_name new_column_name;

OK