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TTITLE "COMP2400: Assignment 1: Question 5" |
TTITLE "COMP2400: Assignment 1: Question 5" |
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SELECT motherid, fatherid, COUNT(personid) AS children |
COLUMN Father HEADING "Father" |
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FROM parents |
COLUMN Mother HEADING "Mother" |
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GROUP BY motherid, fatherid; |
COLUMN Children HEADING "Number of|children" |
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SELECT father.firstname || ' ' || father.surname AS Father, mother.firstname || ' ' || mother.surname AS Mother, COUNT(p.personid) AS children |
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FROM parents p, person mother, person father |
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WHERE p.motherid = mother.personid |
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AND p.fatherid = father.personid |
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GROUP BY father.firstname, father.surname, mother.firstname, mother.surname; |
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EXIT; |
EXIT; |
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