![]() ![]() So for example, you could find Chinese restaurants by searching 'restaurants AND Chinese'. Between them, you can specify that multiple search terms must either exist or not exist together. When information is hard to find because there is either too much of it or too little, Boolean operators can help be more specific, so that Google can find you the most relevant results.ĪND and OR are the most common Boolean operators in search queries. Boolean operators are not always necessary with modern search engines, as Google uses a lot of external information to help provide context and understand search intent.īoolean operators are particularly useful when you have either very wide or very narrow search queries. There are a number of different Boolean operators that can be used with Google and other search engines in queries. Which Boolean operators can be used for queries in search engines? So, the search term 'Restaurants -Italian' would search for restaurants, but exclude any that mention they are Italian. In the case of search engines, NOT is usually represented by a minus sign (-). By using Boolean operators in search queries, it helps them understand your search intention and find you the most relevant results.įor example, Boolean operators can also be used to exclude certain information in order to narrow results. Search engines like Google also use Boolean operators in a very similar fashion. Doing this, and adding more specific terms, helps you to quickly locate the records you are after, even in databases with millions of entries. ![]() If the AND were changed to OR, then it would find customers who are either male or 21 years old (or both). This query would search a database of customer data to find only customers that are both male and 21 years old. SELECT firstname FROM customers WHERE gender='male' AND age='21' Popular database query languages like SQL are composed primarily of Boolean operators to access and modify data in a database.įor example, a basic search query in SQL looks like: Using these basic operators, you can choose to include or exclude certain words, whether on their own or in conjunction with other words.īoolean operators are very commonly used in computer science, particularly in database administration. The most common Boolean operators are AND, OR, and NOT. ![]() Google may find millions of results for some queries, so using Boolean operators helps you find the most relevant results. They are useful to know when you want to find specific results within search engines, especially when using popular keywords and phrases. 3 Which Boolean operators can be used for queries in search engines?īoolean operators are a limited set of words that can be used in search queries to narrow results. ![]()
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