I need a query which will give the tablename and the count of the number of rows. Is it possible?
Yes, it's fairly straightforward.
select 'Customers' as tablename , count(*) as row_count from Customers union all select 'Orders' as tablename , count(*) as row_count from Orders union all select 'Products' as tablename , count(*) as row_count from Products union all ...
If you need to run this for all tables in your database, you can generate the list of tables from the INFORMATION_SCHEMA.TABLES view:
select table_name from information_schema.tables where table_schema = 'mydatabase'
Then you can use the result set of this query along with a text editor to generate the first query.
Dig Deeper on Oracle and SQL
Related Q&A from Rudy Limeback
Read an example of an SQL case expression from our SQL expert Rudy Limeback. Continue Reading
Read SQL expert Rudy Limeback's advice for counting combinations in a table with SQL's GROUP BY clause Continue Reading
Read about the Mimer Validator, a tool used to verify your SQL code, in this tip from SQL expert Rudy Limeback. Continue Reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.