DROP OPERATOR SQL - Language Statements DROP OPERATOR remove a user-defined operator DROP OPERATOR name ( lefttype | NONE , righttype | NONE ) [ CASCADE | RESTRICT ] DROP OPERATOR drops an existing operator from the database system. To execute this command you must be the owner of the operator. name The name (optionally schema-qualified) of an existing operator. lefttype The data type of the operator's left operand; write NONE if the operator has no left operand. righttype The data type of the operator's right operand; write NONE if the operator has no right operand. CASCADE Automatically drop objects that depend on the operator. RESTRICT Refuse to drop the operator if any objects depend on it. This is the default. DROP OPERATOR Message returned if the command was successful. ERROR: RemoveOperator: binary operator 'name' taking 'lefttype' and 'righttype' does not exist This message is returned if the specified binary operator does not exist. ERROR: RemoveOperator: left unary operator 'name' taking 'lefttype' does not exist This message is returned if the specified left unary operator does not exist. ERROR: RemoveOperator: right unary operator 'name' taking 'righttype' does not exist This message is returned if the specified right unary operator does not exist. Remove the power operator a^b for type integer: DROP OPERATOR ^ (integer, integer); Remove the left unary bitwise complement operator ~b for type bit: DROP OPERATOR ~ (none, bit); Remove the right unary factorial operator x! for type integer: DROP OPERATOR ! (integer, none); There is no DROP OPERATOR statement in the SQL standard.