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An equivalence of ".schema sqlite_master" in Oracle


I'm trying to do the same exercise for both SQLite and Oracle. In SQLite, there is a table sqlite_master containing a description of all of the other tables, indexes, triggers, and views that are contained within the database. I can see the query to generate sqlite_master with .schema sqlite_master.

In Oracle, the data dictionary is presented to us in the form of a number of views (DBA, ALL or USER). Let's take the table USER_TABLES as an example. We can do query on USER_TABLES, for example

SELECT table_name
FROM USER_TABLES;

Is there anyway to get the query used to create the table USER_TABLES in Oracle? I tried

SELECT dbms_metadata.get_ddl('TABLE', 'USER_TABLES')
FROM dual;

but it does not work.


Solution

  • I am not sure what are you looking for but if you want the definition of any table in oracle you can use :

    Describe TableName
    

    Or if you want to have list of tables, views or columns you can use below queries: For Tables :

    select * from select * from all_tables 
    

    For Columns :

    select * from all_tab_columns
    

    For Views :

    select * from select * from all_views 
    

    To get all the column information of a table: select *

     from all_tab_columns
     where upper(table_name) = upper('Test')
     order by column_id
    

    Typically oracle stores table_name in uppercase so I used upper() or you can just type 'TEST'