RADIANS Function - SQL Server to PostgreSQL Migration

SQL Server and PostgreSQL provide RADIANS function that converts degrees to radians.

SQL Server:

  -- Get radians
  SELECT RADIANS(90.0);
  # 1.570796326794896558
 
  -- Note that rounded integer is returned if operand is an integer (!)
  SELECT RADIANS(90);
  # 1

PostgreSQL:

  -- Get radians
  SELECT RADIANS(90.0);
  # 1.5707963267948966
 
  SELECT RADIANS(90);
  # 1.5707963267948966

For more information, see SQL Server to PostgreSQL Migration.