BTW, this is one the main differences between CHARs and VARCHARs. LIKE allows partial matching / use of wildcards, while = checks for exact matches. In that case, there is no difference that would come up in the results. When using VARCHAR (presumably the norm), the above are equivalent and equals is to be preferred.

What is not like SQL? The NOT LIKE operator in SQL is used on a column which is of type varchar . Usually, it is used with % which is used to represent any string value, including the null character . The string we pass on to this operator is not case-sensitive.

what is the difference between in and like in SQL?

There actually are simple Like operator is used to search a particular string pattern in where clause of sql query while wilcard operators are used in the like clause to mention the specific string pattern that user wants to search.

What is the use of in SQL? The SQL IN condition (sometimes called the IN operator) allows you to easily test if an expression matches any value in a list of values. It is used to help reduce the need for multiple OR conditions in a SELECT, INSERT, UPDATE, or DELETE statement.

how do you use equal in SQL?

In sql, equal operator is used to check whether the given two expressions equal or not. If it's equal, then the condition will be true and it will return matched records. Example: If we run following SQL statement for equal operator it will return records where empid equals to 1.

Which sorts rows in SQL? The SQL ORDER BY Keyword The ORDER BY keyword is used to sort the result-set in ascending or descending order. The ORDER BY keyword sorts the records in ascending order by default. To sort the records in descending order, use the DESC keyword.

what is the difference between like and equal?

As verbs the difference between equal and like is that equal is (mathematics) to be equal to, to have the same value as; to correspond to while like is to please.

Why between operator is used? The BETWEEN operator is a logical operator that allows you to specify whether a value in a range or not. The BETWEEN operator is often used in the WHERE clause of the SELECT , UPDATE , and DELETE statements. If any expression is NULL , the BETWEEN operator returns NULL .

What is the difference between '=' operator and like operator?

Other than the difference of having wildcard characters, %, and _, there is a significant difference between LIKE and = operators is that LIKE operator does not ignore the trailing spaces while = operator ignores the trailing spaces.

Why use full join in SQL? Note: The FULL OUTER JOIN keyword returns all matching records from both tables whether the other table matches or not. So, if there are rows in "Customers" that do not have matches in "Orders", or if there are rows in "Orders" that do not have matches in "Customers", those rows will be listed as well.

What does <> mean SQL?

<> is standard ANSI SQL and stands for not equal or != .

What are the wildcards in SQL?

To broaden the selections of a structured query language (SQL-SELECT) statement, two wildcard characters, the percent sign (%) and the underscore (_), can be used. The underscore is similar to the MS-DOS wildcard question mark character. The underscore allows for the substitution of a single character in an expression.

What is wildcard characters in SQL?

SQL Wildcards A wildcard character is used to substitute one or more characters in a string. Wildcard characters are used with the SQL LIKE operator. The LIKE operator is used in a WHERE clause to search for a specified pattern in a column.

How does like work in SQL?

The SQL Server LIKE is a logical operator that determines if a character string matches a specified pattern. A pattern may include regular characters and wildcard characters. The LIKE operator is used in the WHERE clause of the SELECT , UPDATE , and DELETE statements to filter rows based on pattern matching.

What is the use of == === operators in SQL?

An operator is a reserved word or a character used primarily in an SQL statement's WHERE clause to perform operation(s), such as comparisons and arithmetic operations. These Operators are used to specify conditions in an SQL statement and to serve as conjunctions for multiple conditions in a statement.

What does count (*) do in SQL?

COUNT(*) returns the number of rows in a specified table, and it preserves duplicate rows. It counts each row separately. This includes rows that contain null values.

Can you use != In SQL?

There is no != operator according to the ANSI/SQL 92 standard. <> is the valid SQL according to the SQL-92 standard. It seems that Microsoft themselves prefer <> to !=

How do you write less than or equal to in SQL query?

Example - Less Than or Equal Operator In SQL Server, you can use the <= operator to test for an expression less than or equal to. SELECT * FROM employees WHERE employee_id <= 500; In this example, the SELECT statement would return all rows from the employees table where the employee_id is less than or equal to 500.


The SQL NULL is the term used to represent a missing value. A NULL value in a table is a value in a field that appears to be blank. A field with a NULL value is a field with no value. It is very important to understand that a NULL value is different than a zero value or a field that contains spaces.