Controls the interpretation of strings that are enclosed in double quotes.
Option can be set at the database (PUBLIC) or user level. When set at the database level, the value becomes the default for any new user, but has no impact on existing users. When set at the user level, overrides the PUBLIC value for that user only. No system privilege is required to set option for self. System privilege is required to set at database level or at user level for any user other than self.
Requires the SET ANY PUBLIC OPTION system privilege to set this option. Can be set temporary for an individual connection or for the PUBLIC role. Takes effect immediately.
QUOTED_IDENTIFIER controls whether strings enclosed in double quotes are interpreted as identifiers (ON) or as literal strings (OFF). This option is included for Transact-SQL compatibility.
Sybase Control Center and Interactive SQL set QUOTED_IDENTIFIER temporarily to ON, if it is set to OFF. A message is displayed informing you of this change. The change is in effect only for the Sybase Control Center or Interactive SQL connection. The JDBC driver also temporarily sets QUOTED_IDENTIFIER to ON.