12 Questions
What is the purpose of the comma in the SELECT list?
To separate two columns in the list of columns
What happens if you omit the FROM clause in the SELECT statement?
The SELECT statement is executed without any issues
What is the purpose of the asterisk (*) in the SELECT statement?
To select data from all columns in the table
In what order does PostgreSQL evaluate the clauses in the SELECT statement?
FROM clause before the SELECT clause
What is the case sensitivity of SQL keywords in PostgreSQL?
SQL keywords are case-insensitive
What is the purpose of the SELECT statement in PostgreSQL?
To retrieve data from a table
What is the command to switch to the dvdrental database in PostgreSQL?
\c dvdrental
What is the purpose of the semicolon at the end of an SQL statement in PostgreSQL?
It is used to indicate the conclusion of an SQL statement
What is the result of running the SQL query SELECT first_name FROM customer;?
A list of first names of all customers in the customer table
What is the difference between SELECT first_name, last_name, email FROM customer; and SELECT * FROM customer;?
The first query returns only the specified columns, while the second query returns all columns
What is the command to connect to the PostgreSQL server using the postgres user?
psql -U postgres
What is the name of the table being queried in the examples provided?
customer
Test your understanding of the basic form of the SELECT statement in PostgreSQL, including the syntax and selecting data from a single table. Learn how to specify a select list and retrieve data from a table.
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