How do you display the list of tables in the default database?

How do you display the list of tables in the default database?

SQL command to list all tables in Oracle

1. Show all tables owned by the current user: SELECT table_name FROM user_tables;
2. Show all tables in the current database: SELECT table_name FROM dba_tables;
3. Show all tables that are accessible by the current user:

How do I get a list of table names in a database?

How to Get the names of the table in SQL

1. Syntax (When we have only single database): Select * from schema_name.table_name.
2. Syntax (When we have multiple databases): Select * from database_name.schema_name.table_name.
3. Example: SELECT * FROM INFORMATION_SCHEMA.TABLES.
4. WHERE.
5. INFORMATION_SCHEMA.
6. Output:
7. Attention reader!

How do you drop data from a table?

You can delete data from a table by deleting one or more rows from the table, by deleting all rows from the table, or by dropping columns from the table….To delete every row in a table:

1. Use the DELETE statement without specifying a WHERE clause.
2. Use the TRUNCATE statement.
3. Use the DROP TABLE statement.

How do I get a list of table names in SQL database?

1 Answer

1. SELECT TABLE_NAME.
2. FROM INFORMATION_SCHEMA.TABLES.
3. WHERE TABLE_TYPE = ‘BASE TABLE’ AND TABLE_SCHEMA=’dbName’

When to use the DROP TABLE statement in SQL?

The SQL DROP TABLE Statement. The DROP TABLE statement is used to drop an existing table in a database.

How to force the dropping of a table?

If you have foreign keys referencing the prefixed tables and you want to force the dropping of the tables use this additional logic: This drops the foreign key constraints but leaves the (formerly) dependent tables. I used this to disable constraints, drop constraints and delete the tables.

What to do if you drop the wrong table in Excel?

It’s a good idea to be precise with the LIKE clause; using the escape keyword to ensure underscores aren’t treated as wildcards. Alternatively use substr (table_name, 1, 7) = ‘PREFIX_’. Dropping the wrong table isn’t a disaster provided you’re working on 10g or later and the RECYCLE BIN is enabled, but it’s still better not to.