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How to make only ONE Sql query?

One SQL query question?

  • I have a table, studentname, age 100 records, how do i query it as studentname, age and enrolldate, the date must unique to each record. the date can be start from anydate such ...show more

  • Answer:

    This case need both JOIN statement and subquery. The query should be this: SELECT sname, age, enrollment_dateFROM student,enrollment JOIN student.student_id, enrollment.student_id WHERE (SELECT UNIQUE(enrollment.enrollment_date) FROM enrollment); For this you have to create two tables that are student, enrollment and join the two table through the unique id + common to both that is student_id

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create another table and in that update max(date)+1 next to each record.but this will be a very dirty job. there could be another way by using row_id for each row and using a self join of 1st record of 1st table to 2nd record of the 2nd table.And then try date+1...U'll have to figure out how to do it...just an idea...all the best

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