SQL INSERT

The INSERT statement is used to add new records into a table.

🔹 Basic Syntax

-- Insert values into all columns (must match order)
INSERT INTO employees 
VALUES (101, 'John Doe', 'IT', 60000);

-- Insert into specific columns
INSERT INTO employees (employee_id, name, salary)
VALUES (102, 'Jane Smith', 75000);

🔹 Insert Multiple Rows (MySQL, PostgreSQL, SQL Server)

INSERT INTO employees (employee_id, name, salary)
VALUES 
  (103, 'Alice', 65000),
  (104, 'Bob', 70000);

🔹 Oracle Note (INSERT ALL)

-- Oracle: multi-row insert
INSERT ALL
  INTO employees (employee_id, name, salary) VALUES (105, 'Karan', 67000)
  INTO employees (employee_id, name, salary) VALUES (106, 'Priya', 72000)
SELECT * FROM dual;

🧠 Quick Recap

Feature	Syntax Example
Insert full row	`INSERT INTO table VALUES (...)`
Insert with columns	`INSERT INTO table (col1, col2) VALUES (...)`
Multiple rows	`INSERT INTO table (...) VALUES (...), (...)`
Oracle multi-insert	`INSERT ALL ... SELECT * FROM dual;`

✅ Use INSERT to populate your table with fresh data