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  1. 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).

  2. 29 Απρ 2018 · Here are some examples to demonstrate the differences between LEN() and DATALENGTH(). 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.

  3. 18 Αυγ 2014 · Here is an example of how DATALENGTH() reports the number of bytes accurately for non-character based data-types: DECLARE @integerData INT = 4; SELECT LEN(@integerData); GO --Result: 1 (the number of characters) DECLARE @dataTimeValue DATETIME = GETDATE(); SELECT LEN(@dataTimeValue); GO --Result: 19 (the number of characters)

  4. 21 Ιουν 2015 · Len function returns a number of characters of the string expression passed as the function parameter. What might be important - trailing spaces are not counted. 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.

  5. The LEN system function returns the number of characters of the specified string expression. On the other hand, the DATALENGTH function returns the number of bytes used to represent any expression. Here’s a summary of the similarities and differences between the LEN() and DATALENGTH() system functions:

  6. 13 Φεβ 2009 · Len() converts it to string and trimmed the ending space, which is 0x20, and give you 3 where DataLength() give you the correct length of the data. You can pass everything to DataLength().

  7. 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.

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