SQL> desc DBA_HIST_SQLSTAT
 Name                             Null?    Type
 -------------------------------- -------- ----------------------
 SNAP_ID                          NOT NULL NUMBER
 DBID                             NOT NULL NUMBER
 INSTANCE_NUMBER                  NOT NULL NUMBER
 SQL_ID                           NOT NULL VARCHAR2(13)
 PLAN_HASH_VALUE                  NOT NULL NUMBER
 OPTIMIZER_COST                            NUMBER
 OPTIMIZER_MODE                            VARCHAR2(10)
 OPTIMIZER_ENV_HASH_VALUE                  NUMBER
 SHARABLE_MEM                              NUMBER
 LOADED_VERSIONS                           NUMBER
 VERSION_COUNT                             NUMBER
 MODULE                                    VARCHAR2(64)
 ACTION                                    VARCHAR2(64)
 SQL_PROFILE                               VARCHAR2(64)
 FORCE_MATCHING_SIGNATURE                  NUMBER
 PARSING_SCHEMA_ID                         NUMBER
 PARSING_SCHEMA_NAME                       VARCHAR2(30)
 PARSING_USER_ID                           NUMBER
 FETCHES_TOTAL                             NUMBER
 FETCHES_DELTA                             NUMBER
 END_OF_FETCH_COUNT_TOTAL                  NUMBER
 END_OF_FETCH_COUNT_DELTA                  NUMBER
 SORTS_TOTAL                               NUMBER
 SORTS_DELTA                               NUMBER
 EXECUTIONS_TOTAL                          NUMBER
 EXECUTIONS_DELTA                          NUMBER
 PX_SERVERS_EXECS_TOTAL                    NUMBER
 PX_SERVERS_EXECS_DELTA                    NUMBER
 LOADS_TOTAL                               NUMBER
 LOADS_DELTA                               NUMBER
 INVALIDATIONS_TOTAL                       NUMBER
 INVALIDATIONS_DELTA                       NUMBER
 PARSE_CALLS_TOTAL                         NUMBER
 PARSE_CALLS_DELTA                         NUMBER
 DISK_READS_TOTAL                          NUMBER
 DISK_READS_DELTA                          NUMBER
 BUFFER_GETS_TOTAL                         NUMBER
 BUFFER_GETS_DELTA                         NUMBER
 ROWS_PROCESSED_TOTAL                      NUMBER
 ROWS_PROCESSED_DELTA                      NUMBER
 CPU_TIME_TOTAL                            NUMBER
 CPU_TIME_DELTA                            NUMBER
 ELAPSED_TIME_TOTAL                        NUMBER
 ELAPSED_TIME_DELTA                        NUMBER
 IOWAIT_TOTAL                              NUMBER
 IOWAIT_DELTA                              NUMBER
 CLWAIT_TOTAL                              NUMBER
 CLWAIT_DELTA                              NUMBER
 APWAIT_TOTAL                              NUMBER
 APWAIT_DELTA                              NUMBER
 CCWAIT_TOTAL                              NUMBER
 CCWAIT_DELTA                              NUMBER
 DIRECT_WRITES_TOTAL                       NUMBER
 DIRECT_WRITES_DELTA                       NUMBER
 PLSEXEC_TIME_TOTAL                        NUMBER
 PLSEXEC_TIME_DELTA                        NUMBER
 JAVEXEC_TIME_TOTAL                        NUMBER
 JAVEXEC_TIME_DELTA                        NUMBER
 IO_OFFLOAD_ELIG_BYTES_TOTAL               NUMBER
 IO_OFFLOAD_ELIG_BYTES_DELTA               NUMBER
 IO_INTERCONNECT_BYTES_TOTAL               NUMBER
 IO_INTERCONNECT_BYTES_DELTA               NUMBER
 PHYSICAL_READ_REQUESTS_TOTAL              NUMBER
 PHYSICAL_READ_REQUESTS_DELTA              NUMBER
 PHYSICAL_READ_BYTES_TOTAL                 NUMBER
 PHYSICAL_READ_BYTES_DELTA                 NUMBER
 PHYSICAL_WRITE_REQUESTS_TOTAL             NUMBER
 PHYSICAL_WRITE_REQUESTS_DELTA             NUMBER
 PHYSICAL_WRITE_BYTES_TOTAL                NUMBER
 PHYSICAL_WRITE_BYTES_DELTA                NUMBER
 OPTIMIZED_PHYSICAL_READS_TOTAL            NUMBER
 OPTIMIZED_PHYSICAL_READS_DELTA            NUMBER
 CELL_UNCOMPRESSED_BYTES_TOTAL             NUMBER
 CELL_UNCOMPRESSED_BYTES_DELTA             NUMBER
 IO_OFFLOAD_RETURN_BYTES_TOTAL             NUMBER
 IO_OFFLOAD_RETURN_BYTES_DELTA             NUMBER
 BIND_DATA                                 RAW(2000)
 FLAG                                      NUMBER