Boolean search strings cheat sheet (2023 Ultimate Edition) (2024)

FAQs

What are good Boolean search strings? ›

The most common Boolean operators are AND, OR, NOT or AND NOT, quotation marks “”, parentheses (), and asterisks *.

How to perform a Boolean search? It's quite simple actually. You go to Google, type in your keywords and add a few additional words and symbols to get more relevant results. These additional words (called operators) and symbols (called modifiers) make up the foundation of the Boolean search.

When you want to include two (or more) criteria in your search, the operator AND narrows down your search. For example, a Boolean search string for recruiting Android developers should include 'developer AND android'. This will produce results that include both keywords.

Boolean Operators are simple words (AND, OR, NOT or AND NOT) used as conjunctions to combine or exclude keywords in a search, resulting in more focused and productive results.

The default and “hidden” Boolean operator in a standard Google search is: AND. OR.

Boolean terms (sometimes called Boolean operators or command terms) connect your keywords to create a logical phrase that the database can understand. This may involve telling the database to look for multiple terms or concepts at once, which will make your search more precise.

Search Strings

A search string is a combination of keywords, truncation symbols, and boolean operators you enter into the search box of a library database or search engine. Example: educat* AND student* gives results that include "education, educator, educating" and "student, students".

What is Boolean in string format? ›

The string representation of a Boolean is either "True" for a true value or "False" for a false value.

A group of terms is called a search string. Try building your search one term at a time, just as you would add beads to a string. You don't need to add a + or the word and between the terms, but you must leave a space between each term and the next. Be as specific as you can!

Boolean searching includes three key Boolean operators: AND, OR, and NOT. An AND operator narrows your search. Between two keywords it results in a search for posts containing both of the words. For instance, the Boolean search “Cats AND Dogs” will retrieve all posts that contain both words.

Q #2) What is a boolean example? Answer: Boolean is a primitive data type that takes either “true” or “false” values. So anything that returns the value “true' or “false” can be considered as a boolean example. Checking some conditions such as “a==b” or “a<b” or “a>b” can be considered as boolean examples.

The most popular Boolean commands are AND, OR, and NOT. Other commands include parentheses, truncation, and phrases.

It has two possible values: True and False , which are special versions of 1 and 0 respectively and behave as such in arithmetic contexts.

Boolean logic is a type of algebra in which results are calculated as either TRUE or FALSE (known as truth values or truth variables). Instead of using arithmetic operators like addition, subtraction, and multiplication, Boolean logic utilizes three basic logical operators: AND, OR, and NOT.

Boolean searching is used to help find search results faster and with more precision. Boolean searching uses operators: words like AND, OR, and NOT. These are logic-based words that help search engines narrow down or broaden search results.

What is nesting in Boolean search? ›

Nesting, or mixing the Boolean operators, is a way to combine several search statements into one comprehensive search statement. Use parentheses ( ) to separate keywords when you are using more than one operator and three or more keywords.

The asterisk serves as the truncation (or wildcard) operator. Unlike the other operators, it should be appended to the word to be affected. Words match if they begin with the word preceding the * operator.

Google also has a few additional operators that work to refine results. Below are common boolean operators that work when searching within Google and Google Scholar, as well as an example of each. (Search for content that contains both vegetarianism and obesity.)

Boolean operators

In the mathematical literature the symbols used are often "+" (plus), "·" (dot) and overbar, or "∨" (vel), "∧" (et) and "¬" (not) or "′" (prime). Some languages, e.g., Perl and Ruby, have two sets of Boolean operators, with identical functions but different precedence.

3. What is the difference between Boolean Search and advanced search? Boolean Search includes the use of operators, commands, and search modifiers to optimize your search results. However, an advanced search looks for the query in an entire dictionary text.

Jul 29, 2022 1201. Keyword searching will search for keywords anywhere in a result record, such as the title or the description. Boolean searching uses operators such as AND, OR, and NOT to refine your search terms.

Python boolean type is one of the built-in data types provided by Python, which represents one of the two values i.e. True or False. Generally, it is used to represent the truth values of the expressions. For example, 1==1 is True whereas 2<1 is False.

Disadvantages of Boolean search

Critics of Boolean over the years have labeled it inefficient, unproductive, prone to error, costly, and demanding of expertise and clean data.

Key concepts from your research question are the most effective search terms to quickly locate relevant sources. Underline key nouns from your research question (for example, people, places, time periods, issues). Assess the impact social media has had on recent outbreaks of civil unrest.

What are three ways I could combine my keywords into search strings? ›

The three most commonly used operators are AND, OR, NOT. These are known as Boolean operators.

Example of Boolean in C ( using typedef ):

if (x == true) { // Conditional statements. printf("The value of x is true"); } else { printf("The value of x is false"); } return 0; // Output: The value of x is false. }

Many Boolean functions of three or more inputs exist. The most common are AND, OR, XOR, NAND, NOR, and XNOR.

Boolean values have two possible states: true and false. In binary, these are represented by 1 and 0. Boolean algebra is a type of math that deals with operations on logical values, including binary variables.

Exact phrase

The simplest and most effective way to search for something specific is to use quote marks around a phrase or name to search for those exact words in that exact order. For instance, searching for Joe Bloggs will show results with both Joe and Bloggs but not necessarily placed sequentially.

Search for string inside another string - strstr

The function strstr returns the first occurrence of a string in another string. This means that strstr can be used to detect whether a string contains another string.

A Boolean variable has only two possible values: true or false. It is common to use Booleans with control statements to determine the flow of a program. In this example, when the boolean value "x" is true, vertical black lines are drawn and when the boolean value "x" is false, horizontal gray lines are drawn.

You can use contains(), indexOf() and lastIndexOf() method to check if one String contains another String in Java or not. If a String contains another String then it's known as a substring. The indexOf() method accepts a String and returns the starting position of the string if it exists, otherwise, it will return -1.

How do you check if a string is a string or a number? ›

The most popular Boolean commands are AND, OR, and NOT. Other commands include parentheses, truncation, and phrases.

A Boolean search is a query technique that utilizes Boolean Logic to connect individual keywords or phrases within a single query. The term “Boolean” refers to a system of logic developed by the mathematician and early computer pioneer, George Boole.

Nesting, or mixing the Boolean operators, is a way to combine several search statements into one comprehensive search statement. Use parentheses ( ) to separate keywords when you are using more than one operator and three or more keywords.

Boolean searches allow you to combine words and phrases using the words AND, OR, NOT (known as Boolean operators) to limit, broaden, or define your search. A good researcher should know how to do a Boolean Search.

Q #2) What is a boolean example? Answer: Boolean is a primitive data type that takes either “true” or “false” values. So anything that returns the value “true' or “false” can be considered as a boolean example. Checking some conditions such as “a==b” or “a<b” or “a>b” can be considered as boolean examples.

In computer science, a Boolean is a logical data type that can have only the values true or false . For example, in JavaScript, Boolean conditionals are often used to decide which sections of code to execute (such as in if statements) or repeat (such as in for loops).

Boolean terms (sometimes called Boolean operators or command terms) connect your keywords to create a logical phrase that the database can understand. This may involve telling the database to look for multiple terms or concepts at once, which will make your search more precise.

How do you identify a Boolean? ›

Using the strict equality operator (===)

As users know Boolean data type has two values which are true and false, and we will compare the variable with both Boolean values. If one of the match conditions returns true, the variable is of Boolean type.

Google uses the OR operator to search for one term or another term. An article can contain either word but doesn't have to include both. This usually works well when using two similar words or subjects you want to learn about.

The result of a Boolean expression is either true or false.