This question tests a candidate’s knowledge of ranking functions, subqueries, common table expression (CTE) and basic SQL.
We will explore the answer with a series of scenarios and questions asked in relation to finding the highest, lowest, and nth highest salary.
A locked phone will only work with a specific network provider. The phone’s network provider can install memory-hogging apps, ringtones and logos that you cannot remove when your phone is locked. Network carriers sell locked phones at prices lower than those of their unlocked equivalents, which is why locked phones are so widespread. Consumers frequently miss the fact that the cheaper phones have strings attached, usually in the form of a two-year contract agreeing to pay for the network carrier’s services.
The same concept applies to check constraints in SQL Server. Let us consider the age of an employee as an integer data type for a column in an employee table. One of the employees has entered the number -76 (negative 76) in the Age column. In the context of age, it is not possible to have age in a negative number. SQL server will not raise any error because negative values are acceptable in an integer data type. To prevent this, the Age column should accept only positive numbers. This can be accomplished by adding a check constraint on the Age column for the employee table. Let’s get started.
If you have already set up a caption style but it is being overridden by certain apps or videos, jump down to Step 5 to turn off the override.
Check out the Tech-Recipes article here to see a tutorial on how to accomplish the same thing on your iPhone.