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SQL Worksheet-3.txt

15. Which of the following statements is an example of semantic Constraint? A) A blood group can contain one of the following values - A, B, AB and O. B) A blood group can only contain characters ...
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SQL Worksheet-4.txt

1. Write SQL query to show average number of orders shipped in a day (use Orders table). Ans:- SELECT ordernumber, shippeddate FROM Orders WHERE ordernumber = (SELECT ...