when i use nVarChar like ...DECLARE @str nVarChar(50) = 'abc ' --- <-- one space after the letter cSELECT Len(@str) , DATALENGH (@str)the results are 3 and 8and if i use VarChar instend of nVarCharthe results are 3 and 4 the number 8 is odd, why is this happening?
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