Difference between where and having clauses

MySQL Interview Queries  MySQL 

  1. Having
    1. HAVING specifies a search condition for a group or an aggregate function used in SELECT statement.
    2. HAVING clause select rows after grouping
    3. MAX,MIN,AVG,COUNT,SUM:(SUM and AVG functions only work on numeric data.)
  2. Where
    1. Where clause select rows before grouping

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