PostgreSQL - SOME Operator Last Updated : 01 Aug, 2024 Comments Improve Suggest changes Like Article Like Report The PostgreSQL SOME operator is used to compare a scalar value with a set of values returned by a subquery. This operator is useful for performing conditional checks against multiple values, providing a flexible way to filter query results.Let us better understand the SOME Operator in PostgreSQL from this article.Syntaxexpression operator SOME(subquery)Rules for Using the SOME OperatorThe below rules must be followed while using the PostgreSQL SOME operator: Subquery Return: The subquery must return exactly one column. Comparison Operators: The SOME operator must be preceded by one of the following comparison operators =, <=, >, <, >, and <>.Return Value: The SOME operator returns true if any value of the subquery meets the condition, otherwise, it returns false. PostgreSQL SOME Operator ExamplesFor the sake of this article we will be using the sample DVD rental database, which is explained here and can be downloaded by clicking on this link in our examples.Example 1: Find Films with Length Greater Than or Equal to the Maximum Length by CategoryHere we will query for the maximum length of film grouped by film category from the "film" table of our sample database. Query:SELECT title FROM film WHERE length >= SOME( SELECT MAX( length ) FROM film INNER JOIN film_category USING(film_id) GROUP BY category_id );Output:Explanation: This query selects the 'title' of films whose 'length' is greater than or equal to the maximum length of films in any category. The subquery calculates the maximum length for each category, and the 'SOME' operator checks if the film's length is greater than or equal to any of these maximum values.Example 2: Find Films in Specific CategoriesHere we will query for the films whose category is either Action('category_id = 1') or Drama('category_id = 7') from the "category" table of our sample database. Query:SELECT title, category_id FROM film INNER JOIN film_category USING(film_id) WHERE category_id = SOME( SELECT category_id FROM category WHERE NAME = 'Action' OR NAME = 'Drama' );Output:Explanation: This query retrieves the 'title' and 'category_id' of films that belong to either the Action or Drama categories. The subquery selects the 'category_id' for these categories, and the 'SOME' operator filters the films based on these category IDs.Important Points About PostgreSQL SOME OperatorSOME is equivalent to ANY. Both operators function in the same way.The subquery must return a single column, and the outer query compares the column to the values returned by this subquery.SOME Operator used in a WHERE clause to compare a value against a set of values returned by a subquery. Comment More infoAdvertise with us Next Article PostgreSQL - SOME Operator R RajuKumar19 Follow Improve Article Tags : Python PostgreSQL postgreSQL-operators Practice Tags : python Similar Reads Python Tutorial | Learn Python Programming Language Python Tutorial â Python is one of the most popular programming languages. Itâs simple to use, packed with features and supported by a wide range of libraries and frameworks. 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