Converting Data Types With PostgreSQL's Efficient CAST Function

Converting data types is essential in database management. PostgreSQL's CAST function helps achieve this efficiently. This article covers how to use CAST for effective data type conversions.

  
  
  Using CAST in PostgreSQL

Some practical examples of CAST include;
Convert Salary to Integer

SELECT CAST(salary AS INTEGER) AS salary_int
FROM employees;

    
    

    
    




Converts salary to an integer.
Convert String to Date:

SELECT order_id, CAST(order_date AS DATE), total_cost
FROM orders;

    
    

    
    




Converts order_date to a date format.

  
  
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