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Updating into string function mssql

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This is where you can leverage the STUFF T-SQL function.Unlike the CONCAT function, which was introduced in SQL Server 2012, the STUFF function has been in prior versions of SQL Server too and hence you can use it in them too.Codes 129-159 contain the Microsoft® Windows Latin-1 extended characters.So the ASCII function in TSQL returns the (ASCII code)value of the first character of string expression Syntax ASCII( string expression) Char function does this in reverse converts the ASCII code value to an equivalent character Syntax CHAR(integer expression) Now we have the basics of the ASCII and CHAR let’s have some fun here a simple task is we have to write a trigger which should not allow a column in the table to accept any invalid characters like “ã,ô,….” it should simply throw an error message saying invalid characters if you look at the extended ascii codes table you will notice all the ASCII codes from 128 to 255 have invalid characters which we do not want them to be inserted in to the table so now we have a table DBO.The script below demonstrates the usage of the CONCAT function to concatenate two or more string values.

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Although there was a way to do that in earlier versions of SQL Server, starting with SQL Server 2012 we have CONCAT function for this specific situation.

Syntax: Replace Function in SQL Server REPLACE (input_string_expression, string_pattern, string_replacement) input_string_expression: input string of characters where string_pattern will be searched string_pattern: string to be searched within an input string expression string_replacement: sting to be replaced in an input string Let’s start with a few examples. Replace a single character in a string: CREATE TABLE #Employee ( Employee Id INT, Emp Name VARCHAR(50) ); INSERT INTO #Employee VALUES (1, 'Atul_Kokam'); INSERT INTO #Employee VALUES (1, 'Sang_W'); GO --Replacing _ (Underscore) in employee name with a space.

SELECT REPLACE(Emp Name, '_', ' ') As Corrected Emp Name FROM #Employee; 5.

ASCII was developed a long time ago and now the non-printing characters are rarely used for their original purpose These are divided into three categories listed below in the table The first 32 characters in the ASCII-table are unprintable control codes and are used to control peripherals such as printers.

Codes 32-127 are common for all the different variations of the ASCII table, they are called printable characters, represent letters, digits, punctuation marks, and a few miscellaneous symbols.