Please help

write a single script (with comments at the top)

Make sure you PRINT each question before you write the query to SELECT the results.

12. For all 300 level courses (300-399), list the course number, prerequisite course number and prerequisite course description. Sort by course number. (2 Rows)

13. List the course number and description for all 100-level courses taught by Charles Lowry. Arrange the list in order of course number. (6 rows)

14. List the grade type code, description and number per section of all grades in course 144. Arrange by description. (5 Rows)

GRADE STUDENTLID STUDENT STUDENTLID ENROLLMENT STUDENTLID 8 SECTIONLD 8 GRADE TYPE CODE 8 GRADE CODE OCCURRENCE SALUTATION FIRST NAMIE LAST NAME STREET ADDRESS ZP PHONE EMPLOYER REGISTRATION DATE CREATED_BY CREATED DATE MODIFIED BY MODIFIED DATE ENROLL DATE FINAL GRADE CREATEDBY CREATEDDATE MODFIED_BY MODIFIED DATE NUMERIC GRADE COMMENTS CREATEDBY CREATED DATE MODFIED_BY MODIFIED DATE GRADE CONVERSION 8 LETTER GRADE GRADE POINT MAX GRADE MIN GRADE CREATED_BY CREATED DATE MODIFIED_BY MODIFIED DATE GRADE TYPE WEIGHT SECTIONLID 8 GRADE TYPE CODE SECTION SECTIONLD COURSE NO SECTION NO START DATE TIME LOCATION INSTRUCTORLID CAPACITY CREATED_BY CREATED DATE MOD FIED_BY MODIFIED DATE NUMBER PER SECTION PERCENT OF FINAL_GRADE DROP LOWEST CREATEDBY CREATED_DATE MODIFIED_BY MODIFIED DATE GRADE TYPE 8 GRADE TYPE CODE DESCRIPTION CREATEDBY CREATED_DATE MOD FIED_BY MODIFIED DATE INSTRUCTOR 8 INSTRUCTOR ID COURSE SALUTATION FIRST NAME LAST NAME STREET_ADDRESS ZP PHONE CREATEDBY CREATED_DATE MODIFIED_BY MODIFIED DATE 8 COURSE NO ZIPCODE COST PREREQUISITE CREATEDBY CREATED_DATE MOD FIED_BY MODIFIED DATE 8 ZIP CITY STATE CREATEDBY CREATED_DATE MODIFIED_BY MODIFIED_DATE