Query the relevant data for a specific time in several schools

Today I wrote a SQL statement, using the table joins and temporary tables, the syntax for their own reference later.

SELECTUs.school_name School Name, CONCAT (Ug.grade_name, uc.classes_name) grade class, UU.user_idUser ID, uu.user_real_name student name, ta.assignment_id job serial number, ta.assignment_write_time composition writing time (in seconds), Ta.assignment_ Word_count words, ta.assignment_submit_count composition submission times, ta.assignment_start_date assignment start time, Ta.assignment_end_date job deadline , Ta.assignment_submit_date job submitted teacher time, Ta.assignment_mark1 job scoring the first item (content), TA.ASSIGNMENT_MARK2 job scoring second item (language), TA. Assignment_mark3 the third item of job scoring (literary or structural), ta.assignment_mark_sum three scores, teacher_list.user_real_name teacher's name fromt_assignment ta Left JOINU_user UU onTa.user_id =Uu.user_id Left JOINU_classes_user UCU onUu.user_id =Ucu.user_id Left JOINU_classes UC onucu.classes_id=uc.classes_id Left JOINU_school_grade USG onuc.school_grade_id=usg.school_grade_id Left JOINU_grade UG onusg.grade_id=ug.grade_id Left JOINU_school US onusg.school_id=us.school_id Left JOINU_user_role Uur onUu.user_id =Uur.user_id Left JOINU_role ur onuur.role_id=ur.role_id Left JOIN (    SELECTucu.classes_id, Uu.user_real_name fromU_user UU Left JOINU_user_role Uur onUu.user_id =Uur.user_id     Left JOINU_role ur onuur.role_id=ur.role_id Left JOINU_classes_user UCU onUu.user_id =Ucu.user_id    WHEREuur.role_id= ' the') Teacher_list onteacher_list.classes_id=ucu.classes_idWHEREta.assignment_start_date> '2014-09-01 00:00:00' andTa.assignment_start_date< '2015-01-31' anduur.role_id= ' -' andus.school_idinch('7','8','5','2');

Query the relevant data for a specific time in several schools