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SQL Queries.md b/Practical/Practical Exam/SQL/S3 - SQL Queries.md index 296acf5..779440e 100644 --- a/Practical/Practical Exam/SQL/S3 - SQL Queries.md +++ b/Practical/Practical Exam/SQL/S3 - SQL Queries.md @@ -151,6 +151,16 @@ SELECT SUM(amount) FROM Loan; ``` 4. Delete all loans with loan amount between 1300 and 1500. +- Delete the dependent records first(due to foreign key constraints): +```sql +DELETE FROM Borrower +WHERE loan_no IN ( + SELECT loan_no + FROM Loan + WHERE amount BETWEEN 1300 AND 1500 +); +``` +- Now delete the Loan table Records: ```sql DELETE FROM Loan WHERE amount BETWEEN 1300 AND 1500;