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What is SQL commands with examples?

User Tangokhi
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Final answer:

SQL commands are used to perform various operations on the data stored in a database, such as retrieving data, inserting new data, updating existing data, and deleting data. Some commonly used SQL commands are SELECT, INSERT, UPDATE, and DELETE.

Step-by-step explanation:

SQL (Structured Query Language) is a programming language used to communicate with and manipulate databases.

SQL commands are used to perform various operations on the data stored in a database. Here are some commonly used SQL commands:

  • The SELECT command is used to retrieve data from a database. It is used along with the FROM clause to specify the table(s) from which data is to be retrieved.

For example: SELECT column1, column2 FROM table_name;

  • The INSERT command is used to insert new data into a table. It is used along with the VALUES clause to specify the values to be inserted.

For example: INSERT INTO table_name (column1, column2) VALUES (value1, value2);

  • The UPDATE command is used to modify existing data in a table. It is used along with the SET clause to specify the new values.

For example: UPDATE table_name SET column1 = value1 WHERE condition;

  • The DELETE command is used to delete existing data from a table. It is used along with the WHERE clause to specify the condition for deletion.

For example: DELETE FROM table_name WHERE condition;

These are just a few examples of SQL commands. There are many other commands available for different operations such as creating tables, altering tables, and more.

User Marvel
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