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In & Not In Operator in SQL

The IN operator allows you to specify multiple values in a WHERE clause. It returns true if the value of a column matches any value in the specified list. The NOT IN operator is the opposite of IN. It returns true if the value of a column does not match any value in the specified list. Important Notes: Both IN and NOT IN can be used with subqueries, allowing for more dynamic filtering. When using NOT IN, be cautious with NULL values in the list. If any value in the list is NULL, the query may not return any results because NULL is considered unknown. These operators are powerful tools for filtering data effectively in SQL!