Owner
The owner of the operator function.
Note: Support from PostgreSQL 8.0 or later.
Schema of left type and Left type
The data type of the operator's left operand, if any. This option would be omitted for a
left-unary operator.
Schema of right type and Right type
The data type of the operator's right operand, if any. This option would be omitted for a
right-unary operator.
Schema of operator function and Operator function
The function used to implement this operator.