In Oracle, INSERT statement is used to add a single record or multiple records into the table.

Syntax: (Inserting a single record using the Values keyword)

 INSERT INTO table  
(column1, column2, ... column_n )  
VALUES  
(expression1, expression2, ... expression_n );   

Syntax: (Inserting multiple records using a SELECT statement)

INSERT INTO table  
(column1, column2, ... column_n )  
SELECT expression1, expression2, ... expression_n  
FROM source_table  
WHERE conditions;   

Parameters

1- table: The table to insert the records into.

2- column1, column2, ... column_n

The columns in the table to insert values

3- expression1, expression2, ... expression_n

The values to assign to the columns in the table. So column1 would be assigned the value of expression1, column2 would be assigned the value of expression2, and so on

4- source_table

The source table when inserting data from another table

5- conditions

The conditions that must be met for the records to be inserted

Oracle Insert Example: By VALUE keyword

It is the simplest way to insert elements to a database by using VALUE keyword

See this example

Consider here the already created suppliers table. Add a new row where the value of supplier_id is 23 and supplier_name is Flipkart

See this example

INSERT INTO suppliers  
(supplier_id, supplier_name)  
VALUES  
(50, 'Flipkart');  

Output

1 row(s) inserted.
0.02 seconds

Oracle Insert Example: By SELECT statement

This method is used for more complicated cases of insertion. In this method insertion is done by SELECT statement. This method is used to insert multiple elements

See this example

In this method, we insert values to the "suppliers" table from "customers" table. Both tables are already created with their respective columns

Execute this query

INSERT INTO suppliers  
(supplier_id, supplier_name)  
SELECT age, address  
FROM customers  
WHERE age > 20;  

Output

4 row(s) inserted.
0.00 seconds

You can even check the number of rows that you want to insert by following statement

SELECT count(*)  
FROM customers  
WHERE age > 20;  

Output

Count(*)
4