Podcast
Questions and Answers
What is the purpose of the comma in the SELECT list?
What is the purpose of the comma in the SELECT list?
- To specify the FROM clause
- To separate two columns in the list of columns (correct)
- To indicate the end of the SELECT statement
- To separate the table name from the column name
What happens if you omit the FROM clause in the SELECT statement?
What happens if you omit the FROM clause in the SELECT statement?
- The SELECT statement is executed without any issues (correct)
- The SELECT statement only returns the column names
- An error is generated
- The SELECT statement returns data from all tables
What is the purpose of the asterisk (*) in the SELECT statement?
What is the purpose of the asterisk (*) in the SELECT statement?
- To separate two columns in the list of columns
- To specify a list of columns
- To select data from all columns in the table (correct)
- To specify the table name
In what order does PostgreSQL evaluate the clauses in the SELECT statement?
In what order does PostgreSQL evaluate the clauses in the SELECT statement?
What is the case sensitivity of SQL keywords in PostgreSQL?
What is the case sensitivity of SQL keywords in PostgreSQL?
What is the purpose of the SELECT statement in PostgreSQL?
What is the purpose of the SELECT statement in PostgreSQL?
What is the command to switch to the dvdrental database in PostgreSQL?
What is the command to switch to the dvdrental database in PostgreSQL?
What is the purpose of the semicolon at the end of an SQL statement in PostgreSQL?
What is the purpose of the semicolon at the end of an SQL statement in PostgreSQL?
What is the result of running the SQL query SELECT first_name FROM customer;?
What is the result of running the SQL query SELECT first_name FROM customer;?
What is the difference between SELECT first_name, last_name, email FROM customer; and SELECT * FROM customer;?
What is the difference between SELECT first_name, last_name, email FROM customer; and SELECT * FROM customer;?
What is the command to connect to the PostgreSQL server using the postgres user?
What is the command to connect to the PostgreSQL server using the postgres user?
What is the name of the table being queried in the examples provided?
What is the name of the table being queried in the examples provided?
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