Author: Masahiko Sawada <sawada.mshk@gmail.com>
/*
* If one doesn't exist, we must resort to using an operator in the same
- * opreator family but with the operator class declared input type. It is
+ * operator family but with the operator class declared input type. It is
* OK to do so, because the column's type is known to be binary-coercible
* with the operator class input type (otherwise, the operator class in
* question would not have been accepted as the partitioning operator