To order the results of a query by other properties in Spring Boot and PostgreSQL, you can use the "ORDER BY" clause. This allows you to sort the rows returned by a SELECT statement in ascending or descending order based on one or more columns.

Here is an example code snippet:

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@Repository
public interface ProductRepository extends JpaRepository<Product, Long> {
  List<Product> findAllByOrderByPriceDesc();
}

In this example, we have a Product entity and a ProductRepository interface that extends JpaRepository. The findAllByOrderByPriceDesc method will return a list of all products, ordered by price in descending order.

You can change the column used for ordering by simply changing the name of the field in the method name. For example, if you wanted to order by product name in ascending order, you would use findAllByOrderByNameAsc.

For more information and examples, you can check the Spring Data JPA documentation: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.query-methods.details

To achieve this, we can use state property in React to show/hide the search query result. Here's an example in React JS:

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import React, { useState } from 'react';

function Search() {
  const [query, setQuery] = useState('');
  const [isResultShown, setIsResultShown] = useState(false);

  const handleSearch = () => {
    // perform query search here
    // set the search result as 'query'
    setIsResultShown(true);
  }

  return (
    <div>
      <input type="text" value={query} onChange={(e) => setQuery(e.target.value)} />
      <button onClick={handleSearch}>Search</button>
      {isResultShown && <h2>{query}</h2>}
    </div>
  );
}

In this example, we have two state variables - query to hold the search query and isResultShown to determine whether to show the search result or not. When the user clicks on the search button, handleSearch() function is called where we can perform the search query and set it to the query state. Finally, isResultShown is toggled to true, showing the h2 tag with the search result.

Media queries in CSS let you change the formatting of your page based on characteristics of the device the visitor is using. You can use media queries to make styles that apply only for specific devices. Here's an example using media queries with the @media rule in CSS:

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@media screen and (max-width: 1200px) {
  body {
    background: blue;
  }
}

This media query will set the background of the body to blue if the screen size is 1200px or less. Here's a good article to get started on understanding media queries: https://www.w3schools.com/css/css_rwd_mediaqueries.asp.

The following CSS will align text to the left when the @media query kicks in with a 600px screen:

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@media screen and (max-width: 600px){
  p {
    text-align: left;
  }
}

You can use the React library Axios to make a HTTP request and get the data you need to create a query. To use Axios, you should first import the library in your React component like this:

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import axios from 'axios';

Then you can create your query like this:

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axios.get(`/endpoint`)
  .then(res => {
   //execute your query on the response data
   doQuery(res);
  });

That's how you can do a query in react using Axios.