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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	RedHat 6.2 (Zoot)
	drop_operator(l)

---

DROP_OPERATOR

NAME
SYNOPSIS
DESCRIPTION
USAGE
COMPATIBILITY

---

NAME

DROP OPERATOR − Removes an operator from the database

SYNOPSIS

DROP OPERATOR id ( type | NONE [,...] )

INPUTS

	id		The identifier of an existing operator.
	type		The type of function parameters.

OUTPUTS

DROP

The message returned if the command is successful.

ERROR: RemoveOperator: binary operator ’oper’ taking ’type’ and ’type2’
does not exist

This message occurs if the specified binary operator does not exist.

ERROR: RemoveOperator: left unary operator ’oper’ taking ’type’ does
not exist

This message occurs if the specified left unary operator specified does not exist.

ERROR: RemoveOperator: right unary operator ’oper’ taking ’type’ does
not exist

This message occurs if the specified right unary operator specified does not exist.

DESCRIPTION

DROP OPERATOR drops an existing operator from the database. To execute this command you must be the owner of the operator.

The left or right type of a left or right unary operator, respectively, may be specified as NONE.

NOTES
The DROP OPERATOR statement is a Postgres language extension.

Refer to create_operator(l) for information on how to create operators.

It is the user’s responsibility to remove any access methods and operator classes that rely on the deleted operator.

USAGE

Remove power operator a^n for int4:

DROP OPERATOR ^ (int4, int4);

Remove left unary negation operator (b !) for booleans:

DROP OPERATOR ! (none, bool);

Remove right unary factorial operator (! i) for int4:

DROP OPERATOR ! (int4, none);

COMPATIBILITY

SQL92
There is no DROP OPERATOR in SQL92.

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drop_operator(l)