Just get column names from hive table

Question

I know that you can get column names from a table via the following trick in hive    hive gt  set hive cli print header true  hive gt  select   from tablename    Is it also possible to just get the column names from the table    I dislike having to change a setting for something I only need once    My current solution is the following    hive gt  set hive cli print header true  hive gt  select   from tablename  hive gt  set hive cli print header false    This seems too verbose and against the DRY-principle

User · Answer

use desc tablename from Hive CLI or beeline to get all the column names  If you want the column names in a file then run the below command from the shell     hive -e  desc dbname tablename    gt    columnnames txt   where dbname is the name of the Hive database where your table is residing You can find the file columnnames txt in your root directory    cd    ls

User · Answer

you could also do show columns in  table or see Hive  how do I retrieve all the database  39 s tables columns for access to hive metadata

User · Answer

Best way to do this is setting the below property  set hive cli print header true  set hive resultset use unique column names false

User · Answer

If you simply want to see the column names this one line should provide it without changing any settings   describe database tablename    However  if that doesn t work for your version of hive this code will provide it  but your default database will now be the database you are using   use database  describe tablename

[sql] Just get column names from hive table

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