Updating into string function mssql

04 Apr

This product release contains a new function called STRING_SPLIT() that solves this business problem. Microsoft has adopted a cloud first release strategy.It is not surprising that this function is already available for Azure SQL Database. ASCII() works for characters with numeric values from 0 to 255.A multi-byte character counts as a single character.We used to write such user defined functions that takes a string, loops through it, searching for the delimiter and retrieve a table with these separated values.What is hidden for us in SQL Server 2016 to achieve this task more efficiently?In this tip we look at a real world business problem of importing data that is not formatted in a way that is easy to import.

The length of the value column will be the same as the length of the string that will be split.A numeric argument is converted to its equivalent binary string form; if you want to avoid that, you can use an explicit type cast, as in this example − SELECT CONCAT('My', 'S', 'QL'); --------------------------------------------------------- | CONCAT('My', 'S', 'QL') | --------------------------------------------------------- | My SQL | --------------------------------------------------------- 1 row in set (0.00 sec) CONCAT_WS() stands for Concatenate With Separator and is a special form of CONCAT().The first argument is the separator for the rest of the arguments.During your experience as a SQL Server Database Administrator, you may work with applications that store data as comma-separated values in a single column.To deal with this de-normalized data, you may need to normalize it to work with each single value separately in your SQL Server code or provide this normalized data to another data source.For more information, see WITH common_table_expression (Transact-SQL). For information about table hints, see Table Hints (Transact-SQL).TOP ( ) Specifies one or more table hints that are allowed for a target table. @ When referencing the Unicode character data types nchar, nvarchar, and ntext, 'expression' should be prefixed with the capital letter ' N'.This means that for a string containing five two-byte characters, LENGTH() returns 10, whereas CHAR_LENGTH() returns 5.SELECT CHAR_LENGTH("text"); --------------------------------------------------------- | CHAR_LENGTH("text") | --------------------------------------------------------- | 4 | --------------------------------------------------------- 1 row in set (0.00 sec) CHARACTER_LENGTH() is a synonym for CHAR_LENGTH().Returns the string that results from concatenating the arguments. If all arguments are non-binary strings, the result is a non-binary string.If the arguments include any binary strings, the result is a binary string.