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MapReduce Service
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      Help Center/ MapReduce Service/ Component Operation Guide (LTS)/ Using HetuEngine/ HetuEngine SQL Syntax/ SQL Syntax/ Auxiliary Command Syntax/ DESCRIBE FORMATTED COLUMNS

      DESCRIBE FORMATTED COLUMNS

      Updated on 2022-11-18 GMT+08:00
      View PDF

      Syntax

      DESCRIBE FORMATTED [db_name.]table_name [PARTITION partition_spec] col_name

      Description

      This statement is used to describe the column information of a table or partition and collect statistics on the columns of specified tables or partitions.

      Example

      describe formatted show_table1 a;
  Describe Formatted Column   
------------------------------
 col_name             a       
 data_type            integer 
 min                          
 max                          
 num_nulls                    
 distinct_count       0       
 avg_col_len                  
 max_col_len                  
 num_trues                    
 num_falses                   
 comment                      
(1 row)
      Parent topic: Auxiliary Command Syntax
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