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SQL Logical Operators. Operator. Description. Example. ALL. TRUE if all of the subquery values meet the condition. Try it. AND. TRUE if all the conditions separated by AND is TRUE.
Jun 6, 2024 · SQL comparison operators also knows as relational or boolean operators, are used to compare values in a database and find if they are equal to (=), not equal to (!=,<>) greater than (>), less than (<), less than or equal to (<=) and greater than or equal to (>=). They are used inside the WHERE clause.
- Equal to Operator
- Not Equal to Operator
- Greater Than Operator
- Less Than Operator
- Greater Than Or Equal Operator
- Less Than Or Equal to Operator
The equal to operator compares the equality of two expressions: It returns true if the value of the left expression is equal to the value of the right expression; otherwise, it returns false. For example, the following statement finds the employee whose last name is Himuro: In this example, the query searches for the string Himuro in the last_name ...
The not equal to (<>) operator compares two non-null expressions and returns true if the value of the left expression is not equal to the right one; otherwise, it returns false. For example, the following statement returns all employees whose department id is not 8. You can use the ANDoperator to combine multiple expressions that use the not equal ...
The greater than operator (>) compares two non-null expressions and returns true if the left operand is greater than the right operand; otherwise, the result is false. For example, to find the employees whose salary is greater than 10,000, you use the greater than operator in the WHEREclause as follows: You can combine expressions that use various ...
The less than operator compares two non-null expressions. The result is true if the left operand evaluates to a value that is lower than the value of the right operand; otherwise, the result is false. The following shows the syntax of the less than operator: For example, the statement below returns all employees whose salaries are less than 10,000:
The greater than or equal operator (>=) compares two non-null expressions. The result is true if the left expression evaluates to a value that is greater than the value of the right expression. The following illustrates the syntax of the greater than or equal operator: For example, the following statement finds employees whose salaries are greater ...
The less than or equal to operator compares two non-null expressions and returns true if the left expression has a value less than or equal the value of the right expression; otherwise, it returns true. The following shows the syntax of the less than or equal to operator: For example, the following statement finds employees whose salaries are less ...
Feb 28, 2023 · Comparison operators test whether two expressions are the same. Comparison operators can be used on all expressions except expressions of the text , ntext , or image data types. The following table lists the Transact-SQL comparison operators.
Apr 20, 2024 · Comparison operators are used in conditions that compares one expression with another. The result of a comparison can be TRUE, FALSE, or UNKNOWN (an operator that has one or two NULL expressions returns UNKNOWN). The following table describes different types of comparison operators - Syntax :
This SQL tutorial explores all of the comparison operators used in SQL to test for equality and inequality, as well as the more advanced operators.
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Jun 9, 2023 · SQL Comparison Operators are reserved words used in SQL statement clauses that compare two values. They are represented by mathematical symbols (=, >, <) and an exclamation point (!). They compare two values to see if they are equal to, greater than, less than, greater than or equal to, less than or equal to, or not equal to.
