SQL STUFF Function Example | Stuff Function In SQL Tutorial

SQL STUFF() is an inbuilt function that is used to replace the sequence of characters from the source string of given length from the new string given at the time of input to the function. It is replaced from the index which is also specified at the time of input. The STUFF() function deletes the part of the string and then inserts another part into the string, starting at the specified position.

SQL STUFF Function Example

See the syntax of stuff() function.

SELECT STUFF (source_string, start, length, add_string);

PARAMETERS

1. source_string: It is the string that is to be processed.
2. Start: It is an integer that is used for identifying the position to start deletion and insertion. If start is negative, zero, or longer than the length of the source_string, then the function will return NULL.
3. add_string: It is a substring that is used for replacement in the source_string.
4. Length: It specifies the number of characters to be deleted.

Note:

1. If the length is negative, the function will return NULL.
2. If the length is longer than the length of the source_string, then the function will delete the whole string.
3. If the length is zero, the function will insert the add_string at the position specified by the Start index.

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Introduction to Structured Query Language SQL pdf

SQL stands for Structured Query Language. SQL is a scripting language expected to store, control, and inquiry information put away in social databases. The main manifestation of SQL showed up in 1974, when a gathering in IBM built up the principal model of a social database. The primary business social database was discharged by Relational Software later turning out to be Oracle.

Models for SQL exist. In any case, the SQL that can be utilized on every last one of the major RDBMS today is in various flavors. This is because of two reasons:

1. The SQL order standard is genuinely intricate, and it isn’t handy to actualize the whole standard.

2. Every database seller needs an approach to separate its item from others.

Right now, contrasts are noted where fitting.

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SQL STUFF Function Example | Stuff Function In SQL Tutorial

SQL STUFF() is an inbuilt function that is used to replace the sequence of characters from the source string of given length from the new string given at the time of input to the function. It is replaced from the index which is also specified at the time of input. The STUFF() function deletes the part of the string and then inserts another part into the string, starting at the specified position.

SQL STUFF Function Example

See the syntax of stuff() function.

SELECT STUFF (source_string, start, length, add_string);

PARAMETERS

1. source_string: It is the string that is to be processed.
2. Start: It is an integer that is used for identifying the position to start deletion and insertion. If start is negative, zero, or longer than the length of the source_string, then the function will return NULL.
3. add_string: It is a substring that is used for replacement in the source_string.
4. Length: It specifies the number of characters to be deleted.

Note:

1. If the length is negative, the function will return NULL.
2. If the length is longer than the length of the source_string, then the function will delete the whole string.
3. If the length is zero, the function will insert the add_string at the position specified by the Start index.

#sql #sql stuff

SQL UPPER Function and its Usage on the Examples

The UPPER function is the SQL Server function that converts character expressions to upper case. It works when either an ad hoc string is passed to the function or a column name is passed.

Now, let us explore the scope and work of this function more thoroughly.

Prepare the Table

To start our examination, let’s prepare a very small table with four columns. The first column is the ID column. All other columns are character columns – char, varchar, and nvarchar respectively.

#sql server #sql functions #sql upper #sql

T-SQL Stuff Command on Practical Examples

The main idea around the SQL Server function called STUFF is concatenating multiple columns into a single column with more flexibility than the CONCAT function would provide. Besides, STUFF can be combined with other techniques for some interesting effects.

In this article, we’ll explore the possibilities that the STUFF command provides for SQL Database specialists.

The T-SQL STUFF Function

Let’s first take a look at the official Microsoft definition of the STUFF function:

The STUFF function inserts a string into another string. It deletes a specified length of characters in the first string at the start position and then inserts the second string into the first string at the start position.

Thus, when you are using the STUFF command, you are rearranging the column data.

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Welcome Back the T-SQL Debugger with SQL Complete – SQL Debugger

When you develop large chunks of T-SQL code with the help of the SQL Server Management Studio tool, it is essential to test the “Live” behavior of your code by making sure that each small piece of code works fine and being able to allocate any error message that may cause a failure within that code.

The easiest way to perform that would be to use the T-SQL debugger feature, which used to be built-in over the SQL Server Management Studio tool. But since the T-SQL debugger feature was removed completely from SQL Server Management Studio 18 and later editions, we need a replacement for that feature. This is because we cannot keep using the old versions of SSMS just to support the T-SQL Debugger feature without “enjoying” the new features and bug fixes that are released in the new SSMS versions.

If you plan to wait for SSMS to bring back the T-SQL Debugger feature, vote in the Put Debugger back into SSMS 18 to ask Microsoft to reintroduce it.

As for me, I searched for an alternative tool for a T-SQL Debugger SSMS built-in feature and found that Devart company rolled out a new T-SQL Debugger feature to version 6.4 of SQL – Complete tool. SQL Complete is an add-in for Visual Studio and SSMS that offers scripts autocompletion capabilities, which help develop and debug your SQL database project.

The SQL Debugger feature of SQL Complete allows you to check the execution of your scripts, procedures, functions, and triggers step by step by adding breakpoints to the lines where you plan to start, suspend, evaluate, step through, and then to continue the execution of your script.

You can download SQL Complete from the dbForge Download page and install it on your machine using a straight-forward installation wizard. The wizard will ask you to specify the installation path for the SQL Complete tool and the versions of SSMS and Visual Studio that you plan to install the SQL Complete on, as an add-in, from the versions that are installed on your machine, as shown below:

Once SQL Complete is fully installed on your machine, the dbForge SQL Complete installation wizard will notify you of whether the installation was completed successfully or the wizard faced any specific issue that you can troubleshoot and fix easily. If there are no issues, the wizard will provide you with an option to open the SSMS tool and start using the SQL Complete tool, as displayed below:

When you open SSMS, you will see a new “Debug” tools menu, under which you can navigate the SQL Debugger feature options. Besides, you will see a list of icons that will be used to control the debug mode of the T-SQL query at the leftmost side of the SSMS tool. If you cannot see the list, you can go to View -> Toolbars -> Debugger to make these icons visible.

During the debugging session, the SQL Debugger icons will be as follows:

The functionality of these icons within the SQL Debugger can be summarized as:

• Adding Breakpoints to control the execution pause of the T-SQL script at a specific statement allows you to check the debugging information of the T-SQL statements such as the values for the parameters and the variables.
• Step Into is “navigate” through the script statements one by one, allowing you to check how each statement behaves.
• Step Over is “execute” a specific stored procedure if you are sure that it contains no error.
• Step Out is “return” from the stored procedure, function, or trigger to the main debugging window.
• Continue executing the script until reaching the next breakpoint.
• Stop Debugging is “terminate” the debugging session.
• Restart “stop and start” the current debugging session.

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