Counting no. of records from multiple tables; Oracle DB

Question

I know i need to use this query to get the list of tables for a schema: select table_name from all_tables where owner=\'schema\'

I know the following query counts t

Answer 1

The table ALL_TABLES contains the column NUM_ROWS. (You can get a description of the table with the following SQL statement: DESCRIBE ALL_TABLES;)

The following statement shows the number of records for every table:

SELECT TABLE_NAME, NUM_ROWS FROM ALL_TABLES WHERE OWNER='SCHEMA';

To get the number of records in all tables of your schema, use:

SELECT SUM(NUM_ROWS) FROM ALL_TABLES WHERE OWNER='SCHEMA';