oracle sql insert select from another table code example

Example 1: oracle insert from select

INSERT INTO my_table SELECT * FROM source_table;
INSERT INTO my_table (a, b, c) SELECT a, b, c FROM source_table;
INSERT INTO my_table (a, b, c) SELECT a, b, c FROM source_table s
	WHERE s.my_col > sysdate;

Example 2: oracle insert from select

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

-- Basically, omit the VALUES clause when using SELECT for an insert into.

Example 3: insert into select oracle

Let’s assume that, we have our employee table.
We have to copy this data
into another table. For this purpose,
we can use the INSERT INTO SELECT
operator. Before we go ahead and do that,
we would have to create another
table that would have the same structure
as the given table.
• First create the second table with
the same table structure with copied one.
• Then use the syntax:
Let’s say employee_duplicate is New table
employee is First table that we want to copy it into new table

INSERT INTO employee_duplicate SELECT * FROM employee;