Witryna11 sty 2024 · Hive doesn't support updates (or deletes), but it supports INSERT INTO, so it is possible to add new rows to an existing table. > insert overwrite table table_name > select *, case when [condition] then 1 else flag_col end as flag_col, from table_name //If you want to use you can add where// > where id <> 1; Share Follow Witryna31 lip 2024 · By default the directory is owned by hive user and hadoop group, you can run below hdfs command as hdfs user and then try to create a database hdfs dfs …
How to query sorted/indexed columns in Impala - Stack Overflow
Witryna22 wrz 2016 · Use DESC EXTENDED tableName for table-level statistics and see if you find the ones that were generated by Impala or Hive. If they are in DESC EXTENDED … Witryna24 wrz 2024 · Both Impala and Hive can operate at an unprecedented and massive scale, with many petabytes of data. Both are 100% Open source, so you can avoid … dam health pcr test sheffield
Hive/Impala replication - Cloudera
Witryna24 sty 2024 · Hive It is a component of Horton works Data Platform(HDP). 1) Hive provides a SQL-like interface to data stored in Hadoop clusters. 2) It translate SQL … Witryna26 mar 2024 · No idea how tableau works, try posting a new answer. If you connect to impala directly using the client or hue (in cdh distro) you should be able to run this command with problem. Even more, this is just a sql statement in impala, you should be able to run it as any other query. – Witryna1 gru 2024 · Create new table in new database: Create Table table_name; Insert data in new tables from old tables using the command: insert into new_table_name partition (partition_column='value') select col1, col2, col3, col4 from old_db.old_table_name where partition_column='value'; Share Improve this answer Follow edited May 3, 2016 at … bird migration theory听力答案