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20 Φεβ 2019 · LEN is use to return character length, in case of blank it is counting it as 0. You can say LEN will trim the string for calculation. DATALENGTH is use to count memory space (bytes).
29 Απρ 2018 · One difference between the LEN() and DATALENGTH() functions is that the LEN() function excludes trailing blanks (trailing spaces, tabs, etc) whereas DATALENGTH() includes trailing blanks. Note, we’re only talking about blanks that come at the end of the string – not at the start or in the middle.
21 Ιουν 2015 · Datalength function returns a number of bytes required to store the expression. The number might depend on the database settings like collation or compatibility level. While len strictly operates on the logical level, datalength is strongly related to the implementation of the particular data type. Examples Numbers. For testing purposes, the ...
18 Αυγ 2014 · The answer to all these questions lie in 2 T-SQL functions: The DATALENGTH () and the LEN (), which are often used interchangeably by developers who may not have fully understood the subtle differences between them. Today, I present before you, a feature comparison of these two functions.
13 Φεβ 2009 · If you care about trailing spaces use LEN(string+’.’)-1, if not just use LEN() on its own. Now if you are certain about the data type of your string then you can use DataLength.
3 Σεπ 2024 · Use the LEN to return the number of characters encoded into a given string expression, and DATALENGTH to return the size in bytes for a given string expression. These outputs may differ depending on the data type and type of encoding used in the column.
13 Ιαν 2021 · LEN() function returns the number of characters in the string excluding the trailing spaces, however, DATALENGTH() returns the bytes in the string that means it counts both trailing and leading spaces.
