cannot be used as user defined variables
Answers
Answer:
User-defined variables are variables that you define when you write a policy. You can use any combination of letters and numbers as variable names as long as the first variable starts with a letter: You do not need to initialize variables used to store single values, such as strings or integers.
ANSWER :
A user-defined variable must be assigned a value before it can be referenced in a query.
User-defined variables cannot be referenced in stored
- procedures,
- computed columns,
- user-defined functions,
- table-valued functions, or views.
Explanation:
You can store a value in a user-described variable in a single declaration and talk over with it later in some other declaration. This allows you to byskip values from one declaration to some other
User-defined functions are capabilities which you use to arrange your code withinside the frame of a policy.
- Once you outline a feature, you could name it withinside the identical manner because the integrated motion and parser capabilities.
- Variables which can be surpassed to a feature are surpassed via way of means of reference, in place of via way of means of cost.
- This approach that converting the cost of a variable inside a feature additionally modifications the cost of the variable withinside the standard scope of the policy.
User-described capabilities can't go back a cost as a go back parameter.
- You can go back a cost via way of means of defining an output parameter withinside the feature assertion after which assigning a cost to the variable withinside the frame of the feature.
- Output parameters are particular withinside the identical manner as every other parameter.
- You also can claim your very own capabilities and phone them inside a policy.
- User-described capabilities assist you encapsulate and reuse capability on your policy.
The syntax for a feature assertion is the Function key-word accompanied via way of means of the call of the feature and a comma-separated listing of runtime parameters. The listing of runtime parameters is accompanied via way of means of a assertion block this is enclosed in curly braces.
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