DROP CAST

Description

Deletes a type conversion.

Precautions

To delete a type conversion, you must have permissions on the source or destination data type. This is the same permission as creating a type conversion.

Syntax

DROP CAST [ IF EXISTS ] (source_type AS target_type) [ CASCADE | RESTRICT ];

Parameters

• IF EXISTS

  Do not throw an error if the specified conversion does not exist. A notice is issued in this case.

• source_type

  Source data type in the type conversion.

• target_type

  Type of the target data in the type conversion.

• CASCADE | RESTRICT

  These keys have no effect because there is no dependency on type conversion.

Examples

For details, see 8.12.8.12-Examples in section "CREATE CAST."

Helpful Links

CREATE CAST

Compatibility

DROP CAST complies with the SQL standard.