get row count from all tables in hive

In this approach we will build a query to get the row count from each of the individual But what about tables where its not partitioned ? Row Number is a Function IN SQL Server for this type of Work. Some names and products listed are the registered trademarks of their respective owners. SELECT column_A, count(*) as cnt FROM table_name GROUP BY column_A I want to get the top 10 rows in every group. The query takes the sum of total size of all the Hive tables based on the. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. [schema_id], INNER JOIN sys.partitions p ON p.object_id = o.object_id, INNER JOIN sys.indexes ip ON ip.object_id=o.object_id and p.index_id = ip.index_id and ip.is_primary_key=1, INNER JOIN sys.columns c on c.object_id = o.object_id, INNER JOIN sys.foreign_key_columns fkc on fkc.parent_object_id = o.object_id and fkc.parent_column_id = c.column_id, INNER JOIN sys.foreign_keys fk on fk.object_id = fkc.constraint_object_id, LEFT JOIN sys.index_columns ic on o.object_id = ic.object_id and c.column_id = ic.column_id, LEFT JOIN sys.indexes i on i.index_id = ic.Index_id and i.object_id = ic.object_id, order by s.name,o.name,c.column_id,fk.name'. Created counts for all the tables in a database. at one time instead of all the tables which might otherwise put a lot of load Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Your approach works well too! Let's count all rows in the table. See the below example query. At 13:45 there were Y amount of activity 3s. Your piece, "SQL Server Row Count for all Tables in a Database" is unhelpful for me, because I don't ess how to use any of the techniques. Boost your math skills with Number Hive - A fun and strategic math game app that helps you learn your times tables. The first argument specifies the offset of the first row to return (as of Hive 2.0.0) and the second specifies the maximum number of rows to return. 11-08-2017 I am interested in the database name, table name and row count, http://dwgeek.com/apache-hive-explain-command-example.html/.

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