Short Answer 
To add multiple values in a SQL WHERE clause, you can use the IN operator for clarity and efficiency, or chain conditions with the OR operator. The IN operator allows checking against a list of values easily, while using OR requires repeating the column name for each value, which can become cumbersome.
Step 1: Choose Your Method
When adding multiple values in a SQL WHERE clause, you can opt for two main methods: using the IN operator or chaining conditions with the OR operator. The IN operator is generally the preferred choice due to its clarity and efficiency, especially when dealing with several values.
Step 2: Using the IN Operator
To utilize the IN operator, you will construct your SQL query by specifying a list of values that a given column could match. For example, the syntax would look like this:
- SELECT * FROM table_name WHERE column_name IN (value1, value2, value3);
This method allows you to easily check if the column matches any of the provided values within parentheses.
Step 3: Using Multiple OR Conditions
If you prefer or need to use the OR operator, your SQL statement would involve repeating the column name for each value. The format will resemble:
- SELECT * FROM table_name WHERE column_name = value1 OR column_name = value2 OR column_name = value3;
This approach also retrieves records where the column matches any of the specified values but can become cumbersome with numerous conditions.