What is SQL?
Enjoying Flashcards?
Tell us what you think
What is SQL?
SQL (Structured Query Language) is a programming language used to interact with a DBMS.
What does the SELECT command do in SQL?
The SELECT command retrieves data from a database table.
True or False?
The WHERE clause in SQL is used to filter data based on a specified condition.
True.
The WHERE clause in SQL is used to filter data based on a specified condition.
What is the purpose of the AND operator in SQL?
The AND operator combines multiple conditions in a WHERE clause.
What does the asterisk (*) wildcard represent in SQL?
The asterisk (*) wildcard is used to select all columns in a table.
What is the function of the ORDER BY clause in SQL?
The ORDER BY clause specifies how data is organised (sorted) when it is retrieved.
What does the SUM function do in SQL?
The SUM function adds up and outputs the sum of a field.
True or False?
The COUNT function in SQL counts the number of fields in a table.
False.
The COUNT function counts the number of rows which match the set criteria.
What is the purpose of the LIKE operator in SQL?
The LIKE operator is used for searching and matching data using wildcard characters.
How would you select all fields from a table named 'Customers' in SQL?
To select all fields from a table named 'Customers', use the command:
SELECT * FROM Customers;