Final answer:
To match only the date in a datetime in SQL, use the DATE() function in MySQL or CONVERT(date, column) in SQL Server to extract the date part for comparison.
Step-by-step explanation:
The correct answer is to use SQL functions to extract the date part from a datetime value for comparison purposes. In SQL, different database systems have various functions to handle date and time values.
For instance, in MySQL, one might use the DATE() function to extract the date part of a datetime value. A query to match records with a specific date would look like: SELECT * FROM your_table WHERE DATE(datetime_column) = 'desired_date'. Similarly, in SQL Server, the CONVERT() function can be used with the style parameter set to extract only the date part:SELECT * FROM your_table WHERE CONVERT(date, datetime_column) = 'desired_date'. It is important to know the specific SQL dialect you are using to apply the correct function for date extraction.