informix 分片表

/***********************************************************************/
informix  分片表
分區表的索引：
唯一索引： 對於輪轉法要指定 DBSPACE
  對於表達式法： 要指定DBSPACE 或 索引字段包含 分區字段
  否則報：872: Invalid fragment strategy or expression for the unique index.
/***********************************************************************/
一 分區表的種類
cd /opt/dbs
touch dbs1 dbs2 dbs3 dbs4
chmod 660 *
onspaces -c -d dbs1 -p /opt/dbs/dbs1 -o 0 -s 100000 -k 16
onspaces -c -d dbs2 -p /opt/dbs/dbs2 -o 0 -s 100000 -k 16
onspaces -c -d dbs3 -p /opt/dbs/dbs3 -o 0 -s 100000 -k 16
onspaces -c -d dbs4 -p /opt/dbs/dbs4 -o 0 -s 100000 -k 16


1 round-robin 輪轉法 
create table a11(a int ,b int,c int,d datetime year to second )
fragment by round robin in dbs1,dbs2 ,dbs3,dbs4;


create table a12 (a int ,b int ,c date ,d datetime year to FRACTION(5))
fragment by round robin in dbs1,dbs2,dbs3,dbs4;


create table a13 ( a int ,b int ,c datetime year to fraction(3))
fragment by round robin in dbs1,dbs2,dbs3,dbs4;


--輪轉法 ： 唯一索引要指定 空間
create unique index idx_a11_a on a11(a);
 872: Invalid fragment strategy or expression for the unique index.


create unique index idx_a11_a on a11(a) in datadbs1;


create index idx_a11_b on a11(b);


insert into a11 values(1,1,1,current);
insert into a11 values(2,2,2,current);
insert into a11 values(3,3,3,current);
insert into a11 values(4,4,4,current);


[informix@node1 ~]$ oncheck -ci test1:a11


Validating indexes for test1:informix.a11...
Index idx_a11_b
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3
 Index  fragment partition dbs4 in DBspace dbs4
Index idx_a11_a
 Index  fragment partition datadbs1 in DBspace datadbs1




2 表達式
create table b11 (a int ,b int ,c date ,d datetime year to FRACTION(5))
fragment by expression 
d<'2011-01-01 00:00:00' and d>='2010-01-01 00:00:00' in dbs1,
d<'2012-01-01 00:00:00' and d>='2011-01-01 00:00:00' in dbs2,
d<'2013-01-01 00:00:00' and d>='2012-01-01 00:00:00' in dbs3;




create unique index idx_b1_a on b11(a);


  872: Invalid fragment strategy or expression for the unique index.
create unique index idx_b1_a on b11(a) in datadbs1;


create index idx_b1_b on b11(b);
create index idx_b1_d on b11(d);
[informix@node1 ~]$ oncheck -ci test1:b11


Validating indexes for test1:informix.b11...
Index idx_b1_a
 Index  fragment partition datadbs1 in DBspace datadbs1
Index idx_b1_b
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3
Index idx_b1_d
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3


 drop index idx_b1_d;
 create index idx_b1_d on b11(d)
 fragment by expression
d<'2011-01-01 00:00:00' and d>='2010-01-01 00:00:00' in dbs1,
d<'2012-01-01 00:00:00' and d>='2011-01-01 00:00:00' in dbs2,
d<'2013-01-01 00:00:00' and d>='2012-01-01 00:00:00' in dbs3;


[informix@node1 ~]$ oncheck -ci test1:b11


Validating indexes for test1:informix.b11...
Index idx_b1_a
 Index  fragment partition datadbs1 in DBspace datadbs1
Index idx_b1_b
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3
Index idx_b1_d
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3


drop index idx_b1_a;
create unique index idx_b1_a on b11(a,d);
[informix@node1 ~]$ oncheck -ci test1:b11


Validating indexes for test1:informix.b11...
Index idx_b1_a
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3
Index idx_b1_b
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3
Index idx_b1_d
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3


3 remainder
create table b12 (a int ,b int ,c date ,d datetime year to FRACTION(5))
fragment by expression 
d<'2011-01-01 00:00:00' and d>='2010-01-01 00:00:00' in dbs1,
d<'2012-01-01 00:00:00' and d>='2011-01-01 00:00:00' in dbs2,
remainder in dbs3;


 create index idx_b12_a on b12(a);
 create index idx_b12_d on b12(d);
[informix@node1 ~]$ oncheck -ci test1:b12


Validating indexes for test1:informix.b12...
Index idx_b12_a
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3
Index idx_b12_d
 Index  fragment partition dbs1 in DBspace dbs1
 Index  fragment partition dbs2 in DBspace dbs2
 Index  fragment partition dbs3 in DBspace dbs3


4 列表 LIST
create table b13(a int ,b int ,c int)
fragment by list(c)
partition p0 values(1,2) in dbs1,
partition p1 values(3,4) in dbs2,
partition p2 values(5) in dbs3;


create table b14(a int ,b int ,c int)
fragment by list(c)
partition p0 values(1,2) in dbs1,
partition p1 values(3,4) in dbs2,
partition p2 values(null) in dbs3;


5 固定間隔 INTERVAL
create table c11( a int ,b int ,c int ,d datetime year to fraction(5))
fragment by range (d)
interval (10 units day)
store  in (dbs1,dbs2,dbs3)
partition p1 values<'2013-01-01 00:00:00' in datadbs1;


create unique index idx_c11_a on c11(a);


  872: Invalid fragment strategy or expression for the unique index.
create unique index idx_c11_a on c11(a) in datadbs2;
drop index idx_c11_a;
create unique index idx_c11_a on c11(a,d)  ;
[informix@node1 ~]$ oncheck -ci test1:c11


Validating indexes for test1:informix.c11...
Index idx_c11_a
 Index  fragment partition p1 in DBspace datadbs1
[informix@node1 ~]$ 




create table c12( a int ,b int ,c int ,d datetime year to fraction(5))
fragment by range (d)
interval (10 units day)
store  in (dbs1,dbs2,dbs3)
partition p1 values<'2013-01-01 00:00:00' in datadbs1;


create table c13(a int ,b int,c int)
fragment by range (b)
interval (100)
store in (dbs1,dbs2,dbs3)
partition p0 values<200 in datadbs1,
partition p1 values<400 in datadbs2;


create index idx_c13_a on c13(a);
insert into c13 values(1,1,1);
insert into c13 values(2,2,2);


insert into c13 values(101,101,1);
insert into c13 values(102,102,2);
insert into c13 values(103,103,4);


insert into c13 values(201,201,1);
insert into c13 values(202,202,2);
insert into c13 values(203,203,4);




insert into c13 values(401,401,1);
insert into c13 values(402,402,2);
insert into c13 values(403,403,4);


[informix@node1 ~]$ oncheck -ci test1:c13


Validating indexes for test1:informix.c13...
Index idx_c13_a
 Index  fragment partition p0 in DBspace datadbs1
 Index  fragment partition p1 in DBspace datadbs2
 Index  fragment partition sys_p2 in DBspace dbs1


create table c14(a int ,b int,c int)
fragment by range (b)
interval (100)
store in (dbs1,dbs2,dbs3)
partition p0 values<200 in datadbs1,
partition p1 values<400 in datadbs2,
partition p2 values<600 in datadbs3;


create index idx_c14_a on c14(a);
insert into c14 values(1,1,1);
insert into c14 values(2,2,2);


insert into c14 values(101,101,1);
insert into c14 values(102,102,2);
insert into c14 values(103,103,4);


insert into c14 values(201,201,1);
insert into c14 values(202,202,2);
insert into c14 values(203,203,4);




insert into c14 values(401,401,1);
insert into c14 values(402,402,2);
insert into c14 values(403,403,4);


[informix@node1 ~]$ oncheck -ci test1:c14


Validating indexes for test1:informix.c14...
Index idx_c14_a
 Index  fragment partition p0 in DBspace datadbs1
 Index  fragment partition p1 in DBspace datadbs2
 Index  fragment partition p2 in DBspace datadbs3


[informix@node1 ~]$ oncheck -pt test1:c13|grep DBspace
 Table fragment partition p0 in DBspace datadbs1
 Table fragment partition p1 in DBspace datadbs2
 Table fragment partition sys_p2 in DBspace dbs1
 Index idx_c13_a fragment partition p0 in DBspace datadbs1
 Index idx_c13_a fragment partition p1 in DBspace datadbs2
 Index idx_c13_a fragment partition sys_p2 in DBspace dbs1


二 分區表的管理
1 INIT 將表改爲分區表
注： 如果表還有索引,索引的空間未指定的話，INIT 後索引存放在 ROOTDBS
create table d0( a int ,b int ,c int);
insert into d0 values(1,1,1);
insert into d0 values(2,1,1);
insert into d0 values(11,1,2);
insert into d0 values(12,1,2);
insert into d0 values(21,1,3);
insert into d0 values(22,1,3);
insert into d0 values(23,1,4);


alter fragment on table d0 init fragment by  round robin in dbs1,dbs2,dbs3;




create table d1( a int ,b int ,c int);
insert into d1 values(1,1,1);
insert into d1 values(2,1,1);
insert into d1 values(11,1,2);
insert into d1 values(12,1,2);
insert into d1 values(21,1,3);
insert into d1 values(22,1,3);
insert into d1 values(23,1,4);


 
alter fragment on table d1 init fragment by expression 
c<3 and c>=0 in dbs1,
c<10 and c>=3 in dbs2;




drop table d1;
create table d1( a int ,b int ,c int);
insert into d1 values(1,1,1);
insert into d1 values(2,1,1);
insert into d1 values(11,1,2);
insert into d1 values(12,1,2);
insert into d1 values(21,1,3);
insert into d1 values(22,1,3);
insert into d1 values(23,1,4);


 
create unique index idx_d1 on d1(a);


alter fragment on table d1 init fragment by expression 
c<3 and c>=0 in dbs1,
c<10 and c>=3 in dbs2;


[informix@node1 ~]$ oncheck -ci test1:d1


Validating indexes for test1:informix.d1...
Index idx_d1
 Index  fragment partition rootdbs in DBspace rootdbs


2 ADD ,DROP
 
create table d16 (a int ,b int ,c date ,d datetime year to FRACTION(5))
fragment by expression 
partition p1 d<'2011-01-01 00:00:00' and d>='2010-01-01 00:00:00' in dbs1,
partition p2 d<'2012-01-01 00:00:00' and d>='2011-01-01 00:00:00' in dbs2;


alter FRAGMENT ON TABLE d16 add partition p3 d<'2013-01-01 00:00:00' and d>='2012-01-01 00:00:00' in dbs2;
alter FRAGMENT ON TABLE d16 add partition p4 d<'2014-01-01 00:00:00' and d>='2013-01-01 00:00:00' in dbs3;
alter fragment on table d16 add partition p5 d<'2015-01-01 00:00:00' and d>='2014-01-01 00:00:00' in datadbs1;


 
[informix@node1 ~]$ dbschema -d test1 -t d16 -ss


DBSCHEMA Schema Utility       GBASE-SQL Version 12.10.FC4G1AEE


{ TABLE "informix".d16 row size = 23 number of columns = 4 index size = 0 }


create table "informix".d16 
  (
    a integer,
    b integer,
    c date,
    d datetime year to fraction(5)
  ) 
  fragment by expression 
    partition p1 ((d < datetime(2011-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2010-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs1,
    partition p2 ((d < datetime(2012-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2011-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs2,
    partition p3 ((d < datetime(2013-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2012-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs2,
    partition p5 ((d < datetime(2015-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2014-01-01 00:00:00) 
              year to fraction(5) ) ) in datadbs1
  extent size 16 next size 64 lock mode row;




revoke all on "informix".d16 from "public" as "informix";




alter fragment on table d16 drop partition p5;
[informix@node1 ~]$ dbschema -d test1 -t d16 -ss


DBSCHEMA Schema Utility       GBASE-SQL Version 12.10.FC4G1AEE


{ TABLE "informix".d16 row size = 23 number of columns = 4 index size = 0 }


create table "informix".d16 
  (
    a integer,
    b integer,
    c date,
    d datetime year to fraction(5)
  ) 
  fragment by expression 
    partition p1 ((d < datetime(2011-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2010-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs1,
    partition p2 ((d < datetime(2012-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2011-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs2,
    partition p3 ((d < datetime(2013-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2012-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs2
  extent size 16 next size 64 lock mode row;




revoke all on "informix".d16 from "public" as "informix";


3 MODIFY


 alter fragment on table d16 modify partition p3 to partition p3 d<'2016-01-01 00:00:00' and d>='2014-01-01 00:00:00' in datadbs1;


  fragment by expression 
    partition p1 ((d < datetime(2011-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2010-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs1,
    partition p2 ((d < datetime(2012-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2011-01-01 00:00:00) 
              year to fraction(5) ) ) in dbs2,
    partition p3 ((d < datetime(2016-01-01 00:00:00) year to 
              fraction(5) ) AND (d >= datetime(2014-01-01 00:00:00) 
              year to fraction(5) ) ) in datadbs1
  extent size 16 next size 64 lock mode row;




revoke all on "informix".d16 from "public" as "informix";


4 ATTACH  attach 後 ，ATTACH 的表被刪除


 create table h1(a int ,b int,c int);
 insert into h1 values(1,1,1);
 insert into h1 values(2,1,1);
 insert into h1 values(11,1,2);
 insert into h1 values(12,1,2);
 insert into h1 values(21,1,3);
 insert into h1 values(22,1,4);
 insert into h1 values(23,1,3);
 
 alter fragment on table h1 init 
 fragment by list (c)
 partition p1 values(1) in dbs1,
 partition p2 values(2) in dbs2,
 partition p3 values(3) in dbs3,
 partition p4 values(4) in datadbs1;




 create table h11(a int ,b int,c int) in dbs1;
 insert into h11 values(1111,1,5);
 insert into h11 values(1112,1,5);


 alter fragment on table h1 attach h11 as partition p5 values(5)  ;
 
[informix@node1 ~]$ dbschema -d test1 -t h1 -ss


DBSCHEMA Schema Utility       GBASE-SQL Version 12.10.FC4G1AEE


{ TABLE "informix".h1 row size = 12 number of columns = 3 index size = 0 }


create table "informix".h1 
  (
    a integer,
    b integer,
    c integer
  ) 
  fragment by list(c)  
    partition p1 VALUES (1 ) in dbs1 , 
    partition p2 VALUES (2 ) in dbs2, 
    partition p3 VALUES (3 ) in dbs3, 
    partition p4 VALUES (4 ) in datadbs1, 
    partition p5 VALUES (5 ) in dbs1
  extent size 16 next size 16 lock mode row;




revoke all on "informix".h1 from "public" as "informix";






  create table h111(a int ,b int,c int) in dbs1;
 insert into h111 values(1111,1,6);
 insert into h111 values(1112,1,6);


 alter fragment   on table h1 attach h111 as partition p11 values(6)   ;


5 detach  detach 的表自動創建


 
  alter fragment   on table h1 detach    partition p1 h11   ;
  alter fragment   on table h1 detach    partition p2 h12   ;
  > select * from h1; 




          a           b           c 


         21           1           3
         23           1           3
         22           1           4
       1111           1           5
       1112           1           5
       1111           1           6
       1112           1           6


7 row(s) retrieved.


> select * from h11; 




          a           b           c 


          1           1           1
          2           1           1


2 row(s) retrieved.


> select * from h12;




          a           b           c 


         11           1           2
         12           1           2


2 row(s) retrieved.




> execute function task('table estimate_compression','t1','test','informix');






(expression)  est   curr  change partnum   coloff   table/index
----- ----- ---
              --- ---------- ----- ---------------------------


Succeeded: tabl
              e estimate_compression  test:informix.t1 


1 row(s) retrieved.


> execute function task('table create_dictionary','t1','test','informix');






(expression)  Succeeded: table create_dictionary  test:informix.t1 


1 row(s) retrieved


> execute function task('table repack','t1','test','informix');






(expression)  Succeeded: table repack  test:informix.t1 


1 row(s) retrieved.




> execute function task('table shrink','t1','test','informix');






(expression)  Succeeded: table shrink  test:informix.t1 


1 row(s) retrieved.


> execute function task('table uncompress','t1','test','informix');






(expression)  Succeeded: table uncompress  test:informix.t1 


1 row(s) retrieved.




[informix@node1 ~]$ onbar -b -L 0
/home/informix/gbase/bin/onbar: line 89:  4728 Segmentation fault      ${INFORMIXDIR}/bin/onbar_d "$@"


/****************************************************************************************/
三 使用存儲過程將表改爲分區表（表中有無數據都可）
/****************************************************************************************/
1 創建相應 DBSPACE
cd /u02/gbase/dbs
touch scdhis_2013 scdhis_2014 scdhis_2015 scdhis_2016 scdhis_2017 scdhis_2018 scdhis_2019 scdhis_2020 scdhis_2021 scdhis_2022 maxu
chmod 660 *


onspaces -c -d scdhis_2013 -p /u02/gbase/dbs/scdhis_2013 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2014 -p /u02/gbase/dbs/scdhis_2014 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2015 -p /u02/gbase/dbs/scdhis_2015 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2016 -p /u02/gbase/dbs/scdhis_2016 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2017 -p /u02/gbase/dbs/scdhis_2017 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2018 -p /u02/gbase/dbs/scdhis_2018 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2019 -p /u02/gbase/dbs/scdhis_2019 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2020 -p /u02/gbase/dbs/scdhis_2020 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2021 -p /u02/gbase/dbs/scdhis_2021 -o 0 -s 20000 -k 16
onspaces -c -d scdhis_2022 -p /u02/gbase/dbs/scdhis_2022 -o 0 -s 20000 -k 16
onspaces -c -d maxu -p /u02/gbase/dbs/maxu -o 0 -s 20000 -k 16




2 將表改爲range分區表
drop table his_smpl_dat_min_1;
CREATE TABLE his_smpl_dat_min_1(
    TIME_DAT DATETIME YEAR TO FRACTION (5) NOT NULL,
    VAL001_DAT DECIMAL(20,5) DEFAULT 0 NOT NULL,
    QUA001_DAT SMALLINT DEFAULT 0 NOT NULL
    );


alter fragment on table his_smpl_dat_min_1 init fragment by  expression  
partition SCDHIS_2013 TIME_DAT<'2014-01-01 00:00:00' and TIME_DAT>='2013-01-01 00:00:00' in scdhis_2013,
partition SCDHIS_2014 TIME_DAT<'2015-01-01 00:00:00' and TIME_DAT>='2014-01-01 00:00:00' in scdhis_2014,
partition SCDHIS_2015 TIME_DAT<'2016-01-01 00:00:00' and TIME_DAT>='2015-01-01 00:00:00' in scdhis_2015,
partition SCDHIS_2016 TIME_DAT<'2017-01-01 00:00:00' and TIME_DAT>='2016-01-01 00:00:00' in scdhis_2016,
partition SCDHIS_2017 TIME_DAT<'2018-01-01 00:00:00' and TIME_DAT>='2017-01-01 00:00:00' in scdhis_2017,
partition SCDHIS_2018 TIME_DAT<'2019-01-01 00:00:00' and TIME_DAT>='2018-01-01 00:00:00' in scdhis_2018,
partition SCDHIS_2019 TIME_DAT<'2020-01-01 00:00:00' and TIME_DAT>='2019-01-01 00:00:00' in scdhis_2019,
partition SCDHIS_2020 TIME_DAT<'2021-01-01 00:00:00' and TIME_DAT>='2020-01-01 00:00:00' in scdhis_2020,
partition SCDHIS_2021 TIME_DAT<'2022-01-01 00:00:00' and TIME_DAT>='2021-01-01 00:00:00' in scdhis_2021,
partition SCDHIS_2022 TIME_DAT<'2023-01-01 00:00:00' and TIME_DAT>='2022-01-01 00:00:00' in scdhis_2022;


[informix@node1 ~]$ dbschema -d ma2 -t his_smpl_dat_min_1 -ss
create table "informix".his_smpl_dat_min_1 
  (
    time_dat datetime year to fraction(5) not null ,
    val001_dat decimal(20,5) 
        default 0 not null ,
    qua001_dat smallint 
        default 0 not null 
  ) 
  fragment by expression 
    ((time_dat < datetime(2014-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2013-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2013,
    ((time_dat < datetime(2015-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2014-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2014,
    ((time_dat < datetime(2016-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2015-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2015,
    ((time_dat < datetime(2017-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2016-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2016,
    ((time_dat < datetime(2018-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2017-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2017,
    ((time_dat < datetime(2019-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2018-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2018,
    ((time_dat < datetime(2020-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2019-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2019,
    ((time_dat < datetime(2021-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2020-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2020,
    ((time_dat < datetime(2022-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2021-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2021,
    ((time_dat < datetime(2023-01-01 00:00:00) year to fraction(5) 
              ) AND (time_dat >= datetime(2022-01-01 00:00:00) 
              year to fraction(5) ) ) in scdhis_2022
  extent size 16 next size 64 lock mode page;


3 創建存儲過程將表改爲 expression 分區表
drop procedure if exists alter_table_fragment; 
create procedure alter_table_fragment()
define v_sql lvarchar(32739);
        define v_tabname VARCHAR(128);


SET DEBUG FILE TO '/home/informix/info_debug.txt';
TRACE 'BEGIN TRACE' ;
trace on;
FOREACH  select tabname  into v_tabname from systables where tabname like 'his_smpl_dat_min_%'


let v_sql='alter fragment on table '|| v_tabname ||' init fragment by  expression '|| 
' partition SCDHIS_2013 TIME_DAT<''2014-01-01 00:00:00'' and TIME_DAT>=''2013-01-01 00:00:00'' in scdhis_2013,'||
' partition SCDHIS_2014 TIME_DAT<''2015-01-01 00:00:00'' and TIME_DAT>=''2014-01-01 00:00:00'' in scdhis_2014,'||
' partition SCDHIS_2015 TIME_DAT<''2016-01-01 00:00:00'' and TIME_DAT>=''2015-01-01 00:00:00'' in scdhis_2015,'||
' partition SCDHIS_2016 TIME_DAT<''2017-01-01 00:00:00'' and TIME_DAT>=''2016-01-01 00:00:00'' in scdhis_2016,'||
' partition SCDHIS_2017 TIME_DAT<''2018-01-01 00:00:00'' and TIME_DAT>=''2017-01-01 00:00:00'' in scdhis_2017,'||
' partition SCDHIS_2018 TIME_DAT<''2019-01-01 00:00:00'' and TIME_DAT>=''2018-01-01 00:00:00'' in scdhis_2018,'||
' partition SCDHIS_2019 TIME_DAT<''2020-01-01 00:00:00'' and TIME_DAT>=''2019-01-01 00:00:00'' in scdhis_2019,'||
' partition SCDHIS_2020 TIME_DAT<''2021-01-01 00:00:00'' and TIME_DAT>=''2020-01-01 00:00:00'' in scdhis_2020,'||
' partition SCDHIS_2021 TIME_DAT<''2022-01-01 00:00:00'' and TIME_DAT>=''2021-01-01 00:00:00'' in scdhis_2021,'||
' partition SCDHIS_2022 TIME_DAT<''2023-01-01 00:00:00'' and TIME_DAT>=''2022-01-01 00:00:00'' in scdhis_2022';
 
EXECUTE IMMEDIATE v_sql;
 
        END FOREACH


        trace off;
end procedure;
--測試
drop table his_smpl_dat_min_1;
CREATE TABLE his_smpl_dat_min_1(
    TIME_DAT DATETIME YEAR TO FRACTION (5) NOT NULL,
    VAL001_DAT DECIMAL(20,5) DEFAULT 0 NOT NULL,
    QUA001_DAT SMALLINT DEFAULT 0 NOT NULL
    );


execute PROCEDURE alter_table_fragment();


> select  s1.partn,s1.partition,s1.exprtext ,s1.nrows from SYSFRAGMENTS s1,systables s2 
where s1.tabid=s2.tabid and s1.tabid>100 and s2.tabname ='his_smpl_dat_min_1'; > 






partn      10485964
partition  scdhis_2013
exprtext   
((time_dat < datetime(2014-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2013-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      11534539
partition  scdhis_2014
exprtext   
((time_dat < datetime(2015-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2014-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      12582914
partition  scdhis_2015
exprtext   
((time_dat < datetime(2016-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2015-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      13631490
partition  scdhis_2016
exprtext   
((time_dat < datetime(2017-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2016-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      14680267
partition  scdhis_2017
exprtext   
((time_dat < datetime(2018-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2017-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      15728843
partition  scdhis_2018
exprtext   
((time_dat < datetime(2019-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2018-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      16777419
partition  scdhis_2019
exprtext   
((time_dat < datetime(2020-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2019-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      17825995
partition  scdhis_2020
exprtext   
((time_dat < datetime(2021-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2020-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      18874571
partition  scdhis_2021
exprtext   
((time_dat < datetime(2022-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2021-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      19923147
partition  scdhis_2022
exprtext   
((time_dat < datetime(2023-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2022-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


10 row(s) retrieved.


--插入數據
insert into his_smpl_dat_min_1 values(current,1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,1),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,10),1,1);


insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,20),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,30),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,40),1,1);


insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,45),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,50),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,60),1,1);


insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,-10),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,-40),1,1);


--更新統計
update statistics;


--分區信息
>  select  s1.partn,s1.partition,s1.exprtext ,s1.nrows from SYSFRAGMENTS s1,systables s2 
where s1.tabid=s2.tabid and s1.tabid>100 and s2.tabname ='his_smpl_dat_min_1'; > 






partn      10485964
partition  scdhis_2013
exprtext   
((time_dat < datetime(2014-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2013-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      11534539
partition  scdhis_2014
exprtext   
((time_dat < datetime(2015-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2014-01-01 00:00:00) year to fraction(5) ) )
nrows      1.000000000000


partn      12582914
partition  scdhis_2015
exprtext   
((time_dat < datetime(2016-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2015-01-01 00:00:00) year to fraction(5) ) )
nrows      0.00


partn      13631490
partition  scdhis_2016
exprtext   
((time_dat < datetime(2017-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2016-01-01 00:00:00) year to fraction(5) ) )
nrows      1.000000000000


partn      14680267
partition  scdhis_2017
exprtext   
((time_dat < datetime(2018-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2017-01-01 00:00:00) year to fraction(5) ) )
nrows      2.000000000000


partn      15728843
partition  scdhis_2018
exprtext   
((time_dat < datetime(2019-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2018-01-01 00:00:00) year to fraction(5) ) )
nrows      1.000000000000


partn      16777419
partition  scdhis_2019
exprtext   
((time_dat < datetime(2020-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2019-01-01 00:00:00) year to fraction(5) ) )
nrows      2.000000000000


partn      17825995
partition  scdhis_2020
exprtext   
((time_dat < datetime(2021-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2020-01-01 00:00:00) year to fraction(5) ) )
nrows      1.000000000000


partn      18874571
partition  scdhis_2021
exprtext   
((time_dat < datetime(2022-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2021-01-01 00:00:00) year to fraction(5) ) )
nrows      2.000000000000


partn      19923147
partition  scdhis_2022
exprtext   
((time_dat < datetime(2023-01-01 00:00:00) year to fraction(5) ) AND (time_dat >= datetime(2022-01-01 00:00:00) year to fraction(5) ) )
nrows      1.000000000000


10 row(s) retrieved.


 
4 將表改爲interval分區表
 
drop table his_smpl_dat_min_1;
CREATE TABLE his_smpl_dat_min_1(
    TIME_DAT DATETIME YEAR TO FRACTION (5) NOT NULL,
    VAL001_DAT DECIMAL(20,5) DEFAULT 0 NOT NULL,
    QUA001_DAT SMALLINT DEFAULT 0 NOT NULL
    );


alter fragment on table his_smpl_dat_min_1 init fragment by  range(TIME_DAT)
interval (1 units year)
store  in (SCDHIS_2013,SCDHIS_2014,SCDHIS_2015,SCDHIS_2016,SCDHIS_2017,SCDHIS_2018,SCDHIS_2019,SCDHIS_2020,SCDHIS_2021,SCDHIS_2022)
partition p1 values<'2014-01-01 00:00:00' in SCDHIS_2013;


[informix@node1 ~]$ dbschema -d ma2 -t his_smpl_dat_min_1 -ss


create table "informix".his_smpl_dat_min_1 
  (
    time_dat datetime year to fraction(5) not null ,
    val001_dat decimal(20,5) 
        default 0 not null ,
    qua001_dat smallint 
        default 0 not null 
  ) 
  fragment by range(time_dat) interval(interval(         1) year(9) to year) store in(scdhis_2013,scdhis_2014,scdhis_2015,scdhis_2016,scdhis_2017,scdhis_2018,scdhis_2019,scdhis_2020,scdhis_2021,scdhis_2022) 
    partition p1 VALUES < datetime(2014-01-01 00:00:00) year to fraction(5) in scdhis_2013
  extent size 16 next size 64 lock mode page;




5 創建存儲過程將表改爲 interval 分區表


drop procedure if exists alter_table_fragment; 
create procedure alter_table_fragment()
define v_sql lvarchar(32739);
        define v_tabname VARCHAR(128);


SET DEBUG FILE TO '/home/informix/info_debug.txt';
TRACE 'BEGIN TRACE' ;
trace on;
FOREACH  select tabname  into v_tabname from systables where tabname like 'his_smpl_dat_min_%'


let v_sql='alter fragment on table '|| v_tabname ||' init fragment by  range(TIME_DAT)'||
' interval (1 units year)'||
' store  in (SCDHIS_2013,SCDHIS_2014,SCDHIS_2015,SCDHIS_2016,SCDHIS_2017,SCDHIS_2018,SCDHIS_2019,SCDHIS_2020,SCDHIS_2021,SCDHIS_2022)'||
' partition p1 values<''2014-01-01 00:00:00'' in SCDHIS_2013';


EXECUTE IMMEDIATE v_sql;
 
        END FOREACH


        trace off;
end procedure;


--測試
drop table his_smpl_dat_min_1;
CREATE TABLE his_smpl_dat_min_1(
    TIME_DAT DATETIME YEAR TO FRACTION (5) NOT NULL,
    VAL001_DAT DECIMAL(20,5) DEFAULT 0 NOT NULL,
    QUA001_DAT SMALLINT DEFAULT 0 NOT NULL
    );


execute PROCEDURE alter_table_fragment();
> select  s1.partn,s1.partition,s1.exprtext ,s1.nrows from SYSFRAGMENTS s1,systables s2 
where s1.tabid=s2.tabid and s1.tabid>100 and s2.tabname ='his_smpl_dat_min_1';


partn      0
partition  
exprtext   
time_dat
nrows      0.00


partn      0
partition  
exprtext   
interval(         1) year(9) to year
nrows      0.00


partn      0
partition  
exprtext   
scdhis_2013,scdhis_2014,scdhis_2015,scdhis_2016,scdhis_2017,scdhis_2018,scdhis_2019,scdhis_2020,scdhis_2021,scdhis_2022
nrows      0.00


partn      10485964
partition  p1
exprtext   
VALUES < datetime(2014-01-01 00:00:00) year to fraction(5)
nrows      0.00


4 row(s) retrieved.


--插入數據
truncate table his_smpl_dat_min_1;
insert into his_smpl_dat_min_1 values(current,1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,1),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,10),1,1);


insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,20),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,30),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,40),1,1);


insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,45),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,50),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,60),1,1);


insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,-10),1,1);
insert into his_smpl_dat_min_1 values(ADD_MONTHS(current,-40),1,1);
 
update statistics;


> select  s1.partn,s1.partition,s1.exprtext ,s1.nrows from SYSFRAGMENTS s1,systables s2 
where s1.tabid=s2.tabid and s1.tabid>100 and s2.tabname ='his_smpl_dat_min_1';


partn      0
partition  
exprtext   
time_dat
nrows      0.00


partn      0
partition  
exprtext   
interval(         1) year(9) to year
nrows      0.00


partn      0
partition  
exprtext   
scdhis_2013,scdhis_2014,scdhis_2015,scdhis_2016,scdhis_2017,scdhis_2018,scdhis_2019,scdhis_2020,scdhis_2021,scdhis_2022
nrows      0.00


partn      10485964
partition  p1
exprtext   
VALUES < datetime(2014-01-01 00:00:00) year to fraction(5)
nrows      0.00


partn      16777419
partition  sys_p1
exprtext   
VALUES >= datetime(2014-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2015-01-01 00:00:00) year to fraction(5)
nrows      1.000000000000


partn      15728843
partition  sys_p3
exprtext   
VALUES >= datetime(2016-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2017-01-01 00:00:00) year to fraction(5)
nrows      1.000000000000


partn      19923147
partition  sys_p4
exprtext   
VALUES >= datetime(2017-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2018-01-01 00:00:00) year to fraction(5)
nrows      2.000000000000


partn      10485965
partition  sys_p5
exprtext   
VALUES >= datetime(2018-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2019-01-01 00:00:00) year to fraction(5)
nrows      1.000000000000


partn      11534539
partition  sys_p6
exprtext   
VALUES >= datetime(2019-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2020-01-01 00:00:00) year to fraction(5)
nrows      2.000000000000


partn      12582914
partition  sys_p7
exprtext   
VALUES >= datetime(2020-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2021-01-01 00:00:00) year to fraction(5)
nrows      1.000000000000


partn      13631490
partition  sys_p8
exprtext   
VALUES >= datetime(2021-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2022-01-01 00:00:00) year to fraction(5)
nrows      2.000000000000


partn      14680267
partition  sys_p9
exprtext   
VALUES >= datetime(2022-01-01 00:00:00) year to fraction(5) AND VALUES < datetime(2023-01-01 00:00:00) year to fraction(5)
nrows      1.000000000000


12 row(s) retrieved.