Query information_schema with SELECT
information_schema is a meta-database that holds information about your current database. information_schema has multiple tables you can query with the known SELECT * FROM syntax:
tables: information about all tables in your current databasecolumns: information about all columns in all of the tables in your current database- …
In this exercise, you'll only need information from the 'public' schema, which is specified as the column table_schema of the tables and columns tables. The 'public' schema holds information about user-defined tables and databases. The other types of table_schema hold system information – for this course, you're only interested in user-defined stuff.
Questo esercizio fa parte del corso
Introduction to Relational Databases in SQL
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
-- Query the right table in information_schema
SELECT table_name
FROM information_schema.___
-- Specify the correct table_schema value
WHERE table_schema = '___';