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Tutorials

SQL is a standard language for storing, manipulating and retrieving data in databases.

Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems.

With our online SQL editor, you can edit the SQL statements, and click on a button to view the result.

ExampleSELECT * FROM Customers;

Click on the “Try it Yourself” button to see how it works.

SQL Interview Questions

SQL vs MySQL

SQL MySQL
SQL is a standard language which stands for Structured Query Language based on the English language MySQL is a database management system.
SQL is the core of the relational database which is used for accessing and managing database

MySQL is an RDMS (Relational Database Management System) such as SQL Server, Informix etc.

What are various DDL commands in SQL?

1. CREATE – It is used to create database objects like table, view etc. 2. ALTER – It is used to alter the structure of the existing database object. 3. DROP – It is used to delete the existing objects from the database. 4. TRUNCATE – It remove all records from a table, including all spaces allocated for the records will be removed. 5. RENAME – It is used to rename an existing database object.

FAQ

What are the 5 basic SQL commands?

SQL Interview Questions
  • What is Database? …
  • What is DBMS? …
  • What is RDBMS? …
  • What is SQL? …
  • What is the difference between SQL and MySQL? …
  • What are Tables and Fields? …
  • What are Constraints in SQL? …
  • What is a Primary Key?

What is SQL question answer?

Some of The Most Important SQL Commands
  • SELECT – extracts data from a database.
  • UPDATE – updates data in a database.
  • DELETE – deletes data from a database.
  • INSERT INTO – inserts new data into a database.
  • CREATE DATABASE – creates a new database.
  • ALTER DATABASE – modifies a database.
  • CREATE TABLE – creates a new table.

What are the 5 SQL statement types?

What is SQL? SQL stands for Structured Query Language , and it is used to communicate with the Database. This is a standard language used to perform tasks such as retrieval, updation, insertion and deletion of data from a database. Standard SQL Commands are Select.

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