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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.
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:
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. While len ...
Fig 1: Len vs DataLength Functions in TSQL As we can see that 'Aamir' has five characters and Len( ) functions returned us 5. DataLength( ) Function also returned us 5 ( 5 Bytes) as 'Aamir' is considered varchar data type and each character takes one byte in varchar data type.
18 Αυγ 2014 · Unlike the LEN () function, the DATALENGTH () function returns the actual number of bytes consumed for the storage of the Unicode value.
23 Νοε 2019 · As you can see, Datalength function returns string length that is 23 in bytes which includes a trailing spaces also. It is also a difference between Len() and Datalength. Length Function does not include trailing spaces while datalength function includes trailing spaces.
