<prompt> Kujenga query kupata watumiaji wote ambao wamejiandikisha katika siku 30 zilizopita  <response>: To retrieve all users who have signed up in the last 30 days, you could use the following SQL statement:sqlSELECT FROM usersWHERE sign_up_date CURRENT_DATE - INTERVAL 30 DAY;This query selects all columns from the users table for rows where the sign_up_date is greater than or equal to the current date minus 30 days. The INTERVAL 30 DAY syntax is used to subtract 30 days from the current date, and the comparison operator is used to filter the rows accordingly. 