系统管理函数

• CURDATE()
• CURRENT_DATABASE
• CURRENT_DATABASE_C()
• CURRENT_DATABASE_ID
• CURRENT_SCHEMA()
• CURRENT_SCHEMAS()
• CURRENT_SESSION_ID
• CURRENT_USER
• CURRENT_USER_C()
• CURRENT_USER_ID()
• CURTIME()
• CURTIMESTAMP()
• GET_DBCTRLPATH()
• GETPGUSERNAME()
• OBJ_DESCRIPTION()
• REBUILD()
• RESTATISTICS()
• SCN_TO_TIMESTAMP()
• SESSION_USER
• SHOW_BINLOG_EVENTS()
• SYS_CONTEXT
• SYS_GET_BLOCK_SIZE()
• SYS_GET_EXTRA_NAME_CHARACTERS()
• SYS_GET_OSRHOME()
• SYS_GET_PAGE_SIZE()
• SYS_GET_PHY_DBNAME()
• SYS_GET_RELID()
• SYS_GET_SPC_HITRATE
• SYS_GET_SQL_KEYWORDS()
• SYS_GET_USER_LOGINCOUNT()
• SYS_IS_CURRENTUSER_DBA()
• SYS_IS_OTHER_TEMP_SCHEMA()
• SYS_KILL_SESSION()
• SYS_MY_TEMP_SCHEMA()
• SYS_RESET_ALL_SESSION_STAT()
• SYS_RESET_SESSION_STAT()
• SYS_RESET_SPC_STAT
• TIMESTAMP_TO_SCN()
• VERSION