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Hi can any body tell me by giving example why flags arre used in fields
Let ther be a Tabdle Data as
Name Marks Age
RAM 98 34
SAM 88 23
LIU 45 17
Now let there we want to have flag to represent the student with underage
Then we can derive a Flag as
,if(Age>=18,1,0) as AdultFlag
Hence flag is the new derived value to check some condition and filter the data accordingly.