1. For lack of a sample of desired output and the existence of such limited sample data that -- depending on one's reading of the question -- the question can be parsed in at least two, mutually-exclusive ways.
  2. Because of the presence of a fundamental error, noted by others, in declaring the variable @a.
  3. Because here at the Monastery, the possibility always exists that precision in English is NOT a strong suit for an OP.

In reply to Re^3: Using an array element as a loop iterator by ww
in thread Using an array element as a loop iterator by gurpreetsingh13

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