QuoteNote
<> is the standard SQL notation for “not equal”. != is an alias, which is converted to <> at a very early stage of parsing. Hence, it is not possible to implement != and <> operators that do different things.
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" = ", " != ", " <> ", " < ", " > ", " >= ", " <= ", "REGEXP", "REGEXP_i", "NOT REGEXP", "NOT REGEXP_i", "LIKE", "NOT LIKE", "IS NULL", "IS NOT NULL", "IN", "NOT IN", "BETWEEN", "NOT BETWEEN", "ANY", "ALL"