SQL Interview Questions: A Comprehensive Guide


Introduction to SQL: The Backbone of Database Management

Wed Mar 27, 2024

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SQL SELECT Statement
The SELECT statement is used to select data from a database.

The data returned is stored in a result table, called the result-set.

SELECT Syntax
SELECT column1, column2, ...
FROM tablename;
Here, column1, column2, ... are the field names of the table you want to select data from. If you want to select all the fields available in the table, use the following syntax:

SELECT * FROM tablename;
SELECT Column Example
The following SQL statement selects the "first_name" and "last_name" columns from the "patients" table:

SELECT first_name, last_name FROM patients;
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SELECT * Example
The following SQL statement selects all the columns from the "patients" table:

SELECT * FROM patients;
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Shiva Vashishtha
A California-based travel writer, lover of food, oceans, and nature.