Declaring and Passing Subprogram Parameters. With NOCOPYa call to the other procedure takes much less than 1 second. Sign up or log in. Tally Table - String Cleaning. With the BY REFERENCE method, only a parameteg to the value is passed; the actual and formal parameters reference the same item. For information about this statement, see Using the EXECUTE IMMEDIATE Statement. Users log into SQL Server but ophional no permissions on their own beyond.




Although Microsoft SQL Server has many system-provided stored procedures, you can create your own. Creating your own T-SQL stored procedures offers several advantages. After telling you drtermine those advantages, this last lesson in the part T-SQL series shows you how to not only create go also execute T-SQL stored procedures. A term you'll often encounter when talking with DBAs or reading SQL Server documentation or literature is stored procedures. A stored procedure is simply a compiled database object that contains one or more T-SQL statements.

Although SQL Server has many system-provided stored procedures, you can create your own. To review and learn more about the complete T-SQL lesson series, visit " T-SQL Series Isn't Just for Novices. Before I show you how to create and execute stored sql procedure optional output parameter used to determine, make sure your MyDB database contains the following tables so that you can run the sample code in this lesson: If you haven't created these database objects, you'll find the code in the To download this file, click the "Download the Code" hotlink at the top of the page.

Before you create a stored procedure, you need to decide what you ooutput your stored procedure to do. In previous lessons, a parameterr of T-SQL statements were used to populate the Employee, Movie, and MovieReview tables, so I'll show you how to create three simple stored procedures that you can use to insert new records into these tables. I'll also add some code to prevent duplicate records from being inserted into the tables.

To create a stored procedure, you use the CREATE PROCEDURE command. This command's basic syntax is The first portion of the CREATE PROCEDURE statement is where you specify the name of the stored procedure ProcedureName and optionally the schema to which it will belong SchemaName. You can read more about schemas in "T-SQLLesson 6". The second portion is where you specify optional input and output parameters. These parameters are defined within the parentheses and are separated by commas.

Each parameter is prefixed with the symbol and must have a data type specified. Each parameter specified will accept an input value, but uused you want to return a value back to the calling EXECUTE statement i. You can have as many input and output parameters as needed. The third portion of the CREATE PROCEDURE statement begins with the AS keyword. Often referred to as the main body of the stored procedure, this is where you specify the T-SQL statements that you want to execute.

You can have as many T-SQL statements as needed. Let's look at an example of a CREATE PROCEDURE command. Suppose that three new employees have joined the fictitious company in which employees review movies discussed in previous lessons. Listing 1 shows the code that creates a stored procedure named InsertEmployee, which you can use to insert records into the Employee table. Listing 1: The InsertEmployee Stored Procedure Because the Employee table has four columns i.

When you execute this stored procedure, you'll pass in the employee's first name, last name, current salary, and hire date using the FirstName, LastName, Salary, and HireDate parameters, respectively. The InsertEmployee stored procedure's main body has been broken down into three sections. Each section has a comment that provides a brief description of what that section of code accomplishes. Comments begin with a double hyphen They're for documentation purposes and not execution.

In the first section, a local variable is defined and initialized. Local variables hold a single data value of a specific data type. Although local variables aren't required in stored procedures, InsertEmployee uses a local variable named count in the second section. After count is defined as having an integer value, it's initialized to 0. Although SQL Server doesn't require you to initialize variables, it's a good habit to get outupt, especially when you'll be joining, or concatenating, those variables with strings.

On several occasions I've helped developers troubleshoot their code because they couldn't determine why there was no output being generated. As it turns out, they were taking an uninitialized variable and appending it to a string. The variable contained a NULL value, which by default causes SQL Server to nullify the the forex trading course a self study room string. The second section contains the code that prevents duplicate records from being inserted into the Employee table.

A SELECT statement counts the number of Employee table records whose FirstName and LastName fields match the FirstName and LastName input parameters. The paramwter variable stores that number. The third section of the stored procedure starts off with an IF…ELSE statement. If the value stored in the count variable is 0, then the statements inside the BEGIN…END block will execute. The BEGIN and END keywords are only necessary if you have more than one statement to execute. In this case, there are two statements.

The first statement sql procedure optional output parameter used to determine the record into the Employee table. The second statement prints a message stating that the record was inserted. If the number stored inside the count variable is anything other than 0, then the statement following the ELSE keyword will execute. Because there's only one statement following the ELSE keyword, you don't need to use a BEGIN…END block.

You can sql procedure optional output parameter used to determine more about IF The last line of code in the InsertEmployee stored procedure is the GO command. It's a good idea to follow each CREATE PROCEDURE statement with the GO command. This command tells SQL Server that there are no more statements for the stored procedure and lets you create multiple stored procedures in one script. After you've written the stored procedure, you need to add it to the database. To execute a stored procedure, you need to use the EXECUTE command followed by the name of the stored procedure and the necessary input parameters.

In this case, each input parameter needs to be followed by an equal sign and the value being passed in. For example, to add a record to the Employee table with the InsertEmployee stored procedure, you'd use a command such as If you try running the same command again, you'll see the results of the record-duplication check: Listing 2: Code That Adds More Employees to the Employee Table To confirm that the stored procedure worked as expected and actually inserted all three employee records, execute the statement Note that there are five columns even though the stored procedure adds values to only four columns.

As I explained in "T-SQLLesson 2"the first column is an identity column. SQL Server automatically adds that column's values. The value is incremented with each record being inserted. Because the Employee table had eight existing records, the three new records have the EmployeeID values of 9, 10, and Now let's suppose that the three new eql wanted in on reviewing the movies they watched, so they diligently submitted their movie reviews. Some of those reviews were for movies not in the Movie table, so records need to use added to both the Movie table and MovieReview tables.

To insert data into these tables, you can use the InsertMovie and InsertMovieReview stored procedures. These stored procedures are very similar to the InsertEmployee procedure, so I won't discuss how they work. You can find the code for these stored procedures in the InsertMovie. After you execute the code to add the InsertMovie and InsertMovieReview to the database, run the code in the CodeToAddMoreMovies. Then execute the code in the CodeToAddNewMovieReviews. So far the InsertEmployee, InsertMovie, and InsertMovieReview stored procedures have been used to get data into the database.

The code in Listing 3 creates a stored procedure, ShowMovieReviews, that you can use to get data out of the database in the form of a report. Listing 3: The ShowMovieReviews Stored Procedure The report lists each movie in a particular genre and provides that movie's average rating, which is calculated from the ratings in the ised movie reviews. ShowMovieReviews takes one input parameter: Genre. For example, to generate a report that shows all the thriller movies and their average ratings, you'd execute the code Similarly, to generate a report that shows all the sci-fi movies and their average ratings, you'd run the command It has been jsed long uzed to get to this final lesson.

In this series, you learned how to create tables and views, how to insert, update, and delete records in tables, and how to summarize and aggregate data. You learned about the difference between usex and outer joins and the various system functions that you can use to manipulate data in queries. In this final lesson, you learned how to tuck all those useful T-SQL commands inside a wonderful container known as a stored procedure. I've had a lot of fun usd this series you might have noticed my corny jokes strewn about.

Believe it or not, I actually learned a lot. I keep a copy of "T-SQL, Lesson 5: How to Join Tables" on my desk at work for those sleepy days when I just can't remember the difference between an INNER JOIN and a RIGHT OUTER JOIN. I truly hope you found this series useful. My goal was to introduce novices to the basics of the T-SQL language while encouraging them to dig deeper on their own.

If you've been reading along, doing the exercises, and are much more comfortable with T-SQL than when you first started, then I have only one thing further to say: Congratulations, you just graduated! Find the back issues here. Skip to Navigation Skip to Content. Remember me Forgot Your Detdrmine Administration Backup and Recovery. Sql procedure optional output parameter used to determine Intelligence Power BI.

SQL Server Analysis Services. SQL Server Integration Services. SQL Server Reporting Services. T-SQL Stored Procedures. In Lesson 10, learn how to create stored procedures and why you'd want to. Discuss this Article 2. Jyotsana vry nice article! Related Articles T-SQL The CASE Function 1. Jump Start: Stored Procedures--The Big Picture. T-SQLLesson 1 6. Stored Procedure Documents Scheduled Jobs in SQL Server 6. Browse back issues of SQL Server Pro, from January through the last issue published in April Many organizations today cannot use public parameetr solutions because of security concerns, administrative challenges and functional limitations.

However, they still need a centralized platform where end users can conduct self-service analytics in an IT-enabled environment It is crucial to move away from data and analytics stored on individual desktop computers. The strong, continued alliance between Microsoft and Pyramid Determune helps make all this possible To become a truly data-driven enterprise, many business leaders recognize that they must extend the capabilities of self-service business intelligence BI and parameted to more of their business users.




Mysql - Stored Procedure with Input and Output Parameters


PL/SQL (Procedural Language/ Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available. Is it possibile to Table-Valued parameter be used as output param for stored procedure ? Here is, what I want to do in code /*First I create MY type */ CREATE TYPE. Pipelining Data Between PL/ SQL Table Functions. With serial execution, results are pipelined from one PL/ SQL table function to another using an approach similar to co.