FLOAT4

PostgreSQL

Example

CREATE TABLE items (
   id SERIAL PRIMARY KEY,
   product VARCHAR(100),
   weight FLOAT4
);

INSERT INTO items (product, weight) VALUES ('Apple', 0.12), ('Banana', 0.15);

SELECT * FROM items;

Output

 id | product | weight
----|---------|--------
  1 | Apple   | 0.12
  2 | Banana  | 0.15

Explanation

This sample SQL code creates a table named items with three columns: id, product and weight. The weight column uses the FLOAT4 data type to store floating-point numbers. Two rows are inserted into the items table, and then all records from the table are selected with a SELECT * FROM items command. The output shows the results of this select query.

Oracle

Example

DECLARE
   num FLOAT4;
BEGIN
   num := 12.3456;
   DBMS_OUTPUT.PUT_LINE('The value of num is ' || num);
END;

Output

The value of num is 12.3456

Explanation

In the provided example, FLOAT4 data type in Oracle SQL is used to declare a variable num. The variable is then assigned the value of 12.3456. The DBMS_OUTPUT.PUT_LINE function is then used to output the value of num, resulting in the displayed output. The FLOAT4 data type supports a precision of floating point numbers up to 4 bytes.