oracle 查询表里信息_如何查看表的历史统计信息
多谢Yong和netbanker的回复,查看了一下,发现10205已经提供了
FUNCTION DIFF_TABLE_STATS_IN_HISTORY RETURNS DBMS_STATS
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
OWNNAME VARCHAR2 IN
TABNAME VARCHAR2 IN
TIME1 TIMESTAMP WITH TIME ZONE IN
TIME2 TIMESTAMP WITH TIME ZONE IN DEFAULT
PCTTHRESHOLD NUMBER IN DEFAULT
以下是10205下的试验
SQL> select OBJ# ,ROWCNT,BLKCNT,AVGRLN,SAMPLESIZE,ANALYZETIME,SAVTIME from sys.WRI$_OPTSTAT_TAB_HISTORY where obj#=68934;
OBJ# ROWCNT BLKCNT AVGRLN SAMPLESIZE ANALYZETI SAVTIME
---------- ---------- ---------- ---------- ---------- --------- ---------------------------------------------------------------------------
68934 196801 9141 111 32808 22-MAY-13 25-MAY-13 10.13.34.673281 AM +02:00
68934 25-MAY-13 10.13.36.500510 AM +02:00
68934 224279 5914 109 36147 30-MAY-13 01-JUN-13 08.15.20.821075 AM +02:00
68934 01-JUN-13 08.15.22.808346 AM +02:00
68934 224678 4780 112 47820 13-JUN-13 15-JUN-13 09.06.32.145527 AM +02:00
68934 15-JUN-13 09.06.33.862554 AM +02:00
SQL> select * from table(dbms_stats.diff_table_stats_in_history('AAAA','BBB',systimestamp,to_timestamp(to_date('15-JUN-13 09.06.32','dd-mm-yy hh24:mi:ss'))));
REPORT
------------------------------------------------------------------------------
MAXDIFFPCT
----------
##############################################################################
#
STATISTICS DIFFERENCE REPORT FOR:
.................................
TABLE : RESULT_SET
OWNER : IBIS_UL_WORKSPACE
SOURCE A : Statistics as of 20-JUN-13 11.27.44.381723 AM +02:00
SOURCE B : Statistics as of 15-JUN-13 12.00.00.000000 AM +02:00
PCTTHRESHOLD : 10
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~
TABLE / (SUB)PARTITION STATISTICS DIFFERENCE:
.............................................
OBJECTNAME TYP SRC ROWS BLOCKS ROWLEN SAMPSIZE
..............................................................................
.
RESULT_SET T A 15720 17237 108 77
B224678 4780 112 47820
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~
COLUMN STATISTICS DIFFERENCE:
.............................
COLUMN_NAME SRC NDV DENSITY HIST NULLS LEN MIN MAX SAMPSIZ
..............................................................................
.
AGGREGATION_FLA A 1 1 NO 15108 2 C102 C102 77
B 2 .5 NO 223429 2 80 C102 47820
COMMENTS A 0 .000063613 NO 15720 1 NULL
B 5931 .000168605 NO 173729 6 21212 BF313 47820
COMPOUND_ID A 212 .004716981 NO 205 8 C3602 C7025 77
B 108842 .000009187 NO 90 8 C3023 C7025 47820
END_DATE A 31 .032258064 NO 4492 6 786C0 78710 77
B 1126 .000888099 NO 87306 5 646D0 78710 47820
EXPERIMENT_ID A 74 .013513513 NO 613 5 C35B2 C4023 77
B 4579 .000218388 NO 0 5 C32A2 C4023 47820
IBIS_FIRST_INSE A 81 .012345679 NO 0 7 786D0 78710 77
B 3142 .000318268 NO 0 7 786A0 78710 47820
IBIS_LAST_UPDAT A 96 .010416666 NO 0 7 786D0 78710 77
B 2916 .000342935 NO 0 7 786B0 78710 47820
IS_AGGREGATED A 2 .5 NO 0 2 80 C102 77
B 2 .5 NO 71 2 80 C102 47820
IS_DELETE A 2 .5 NO 0 2 80 C102 77
B 1 1 NO 0 1 80 80 47820
LOCAL_RESULT_SE A 15720 .000063613 NO 0 11 2D333 41495 77
B 224678 .000004450 NO 0 11 2D313 41495 47820
LOCAL_SYSTEM_ID A 2 .5 NO 0 2 C10D C120 77
B 3 .333333333 NO 0 2 C109 C120 47820
PROJECT_ID A 4 .25 NO 15108 2 C2372 C2372 77
B 143 .006993006 NO 121995 2 C2072 C2372 47820
PUBLISHED_DATE A 24 .041666666 NO 613 7 786D0 78710 77
B 1027 .000973709 NO 0 7 786A0 78710 47820
RESULT_SET_ID A 15720 .000063613 NO 0 6 C4503 C5020 77
B 224678 .000004450 NO 0 6 C4263 C5020 47820
SAMPLE_ID A 220 .004545454 NO 613 6 C40B5 C50C0 77
B 117884 .000008482 NO 0 6 C40B0 C50C0 47820
START_DATE A 59 .016949152 NO 613 7 786C0 78710 77
B 1252 .000798722 NO 0 7 646D0 78710 47820
TEST_COND_ID A 16 .0625 NO 0 4 C3142 C34C1 77
B 5 .2 NO 832 4 C30E4 C34C4 47820
TEST_ID A 16 .0625 NO 0 4 C3022 C3031 77
B 6 .166666666 NO 0 4 C24F3 C3031 47820
TEST_VERSION_ID A 22 .045454545 NO 613 4 C3023 C3033 77
B 8 .125 NO 0 4 C2536 C3032 47820
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~
INDEX / (SUB)PARTITION STATISTICS DIFFERENCE:
.............................................
OBJECTNAME TYP SRC ROWS LEAFBLK DISTKEY LF/KY DB/KY CLF LVL SAMPSI
Z
..............................................................................
.
INDEX: RESULT_SET_PK
....................
RESULT_SET_PK I A 11777 3513 11777 1 1 2572 2 4623
B NO_STATS
INDEX: IX_RESULT_SET_TEST_ID_SAMPLE
...................................
IX_RESULT_SET_T I A 15514 6791 6937 1 1 8880 2 15514
B NO_STATS
INDEX: IX_RESULT_SET_TEST_ID_COMPOUND
.....................................
IX_RESULT_SET_T I A 15514 6940 6783 1 1 8867 2 15514
B NO_STATS
INDEX: RESULT_SET_UK1
.....................
RESULT_SET_UK1 I A 15514 8024 15514 1 1 8346 2 15514
B NO_STATS
INDEX: IX_RESULT_SET_TEST_ID_SYST_RS
....................................
IX_RESULT_SET_T I A 15514 4893 15514 1 1 1877 2 15514
B NO_STATS
##############################################################################
#
6 rows selected.
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