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SQL Program 50: Rollback a change

SQL Program 50: Rollback a change

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SQL Program 49: Commit a bank transfer

SQL Program 49: Commit a bank transfer

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SQL Program 48: Calculate running order total

SQL Program 48: Calculate running order total

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SQL Program 47: Rank employees by department salary

SQL Program 47: Rank employees by department salary

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SQL Program 46: Use a common table expression

SQL Program 46: Use a common table expression

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SQL Program 45: Customers who have orders

SQL Program 45: Customers who have orders

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SQL Program 44: Customers with more than three orders

SQL Program 44: Customers with more than three orders

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SQL Program 43: Total orders by customer

SQL Program 43: Total orders by customer

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SQL Program 42: Orders within a year

SQL Program 42: Orders within a year

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SQL Program 41: Rename a column (PostgreSQL)

SQL Program 41: Rename a column (PostgreSQL)

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SQL Program 40: Add email column

SQL Program 40: Add email column

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SQL Program 39: Create salary index

SQL Program 39: Create salary index

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SQL Program 38: Read from a view

SQL Program 38: Read from a view

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SQL Program 37: Create employee directory view

SQL Program 37: Create employee directory view

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SQL Program 36: Find duplicate student names

SQL Program 36: Find duplicate student names

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SQL Program 35: Categorise salary using CASE

SQL Program 35: Categorise salary using CASE

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SQL Program 34: Employee count per department

SQL Program 34: Employee count per department

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SQL Program 33: Departments with no employees

SQL Program 33: Departments with no employees

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SQL Program 32: Employees above average salary

SQL Program 32: Employees above average salary

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SQL Program 31: Second highest distinct salary

SQL Program 31: Second highest distinct salary

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