what is difference between stored procedure and function in database?
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Function must return a value but in Stored Procedure it is optional( Procedure can return zero or n values). Functions can have only input parameters for it whereas Procedures can have input/output parameters . ... Functions can be called from Procedure whereas Procedures cannot be called from Function.
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A view is essentially a saved SQL statement. Therefore, I would say that in general, a stored procedure will be likely to be faster than a view IF the SQL statement for each is the same, and IF the SQL statement can benefit from optimizations. Otherwise, in general, they would be similar in performance.
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Visual Basic statements are grouped in a block enclosed by Sub , Function and matching End statements. The difference between the two is that functions return values, procedures do not. A procedure and function is a piece of code in a larger program.
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PHP - Functions. PHP functions are similar to other programming languages. A function is a piece of code which takes one more input in the form of parameter and does some processing and returns a value. You already have seen many functions like fopen() and fread() etc.
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View is simple showcasing data stored in the database tables whereas a stored procedure is a group of statements that can be executed. A view is faster as it displays data from the tables referenced whereas a store procedure executes sql statements. A view is a simple way to save a complex SELECT in the database.
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Action can have a object repository associated with it while a function can't. A function is just lines of code with some/none parameters and a single return value while an action can have more than one output parameters. ... Code specific to QTP can also be put into an function using DP.
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SQL query and Stored procedure do the same thing. But the difference is that, a query should be compiled every time the query is executed, while the stored procedure is in compiled form when executed first time. If we use stored procedure we can avoid recompilation of the query.
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Stored procedures beat dynamic SQL in terms of performance. A stored procedure is cached in the server memory and its execution is much faster than dynamic SQL. If all the remaining variables are kept constant, stored procedure outperforms dynamic SQL.
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A stored procedures and functions may have input, output, and input/output parameters. Input parameter is a parameter whose value is passed into a stored procedure/function module. ... Output parameter is a parameter whose value is passed out of the stored procedure/function module, back to the calling PL/SQL block.
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The answer of this is “No” you cannot write DML statements in SQL functions. Functions have Only READ-ONLY database access. If DML operations would be allowed in functions, then functions would be pretty similar to stored procedures. The way it is, a stored procedure can use a function, but not vice versa.
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The difference between Sub procedures and Function procedures is that Function procedures return a value and Sub procedures do not. ... Methods that return values are functions that are associated with an object.
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There are two types of SQL functions, aggregate functions, and scalar(non-aggregate) functions. Aggregate functions operate on many records and produce a summary, works with GROUP BY whereas non-aggregate functions operate on each record independently.
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The Differences include: Sub Procedure starts and ends with using Sub and End Sub respectively while Function Procedure starts and ends with Function and End Function respectively. The most important difference is Sub Procedure never returns a value while the Function Procedure may return a value (as shown above).
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['Create a user-defined table type that corresponds to the table that you want to populate.', 'Pass the user-defined table to the stored procedure as a parameter.', 'Inside the stored procedure, select the data from the passed parameter and insert it into the table that you want to populate.']
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So the difference between the function and function call is, A function is procedure to achieve a particular result while function call is using this function to achive that task.
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Package contains Package body where all procedures and functions actual definitions will be defined. Procedure is nothing but a pl/sql block where all required processing code will be written to do a specific task. Its like fucntion but it won't return any value.
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The main difference between a VBA Function procedure and a Sub procedure is that a Function procedure returns a result, whereas a Sub procedure does not.