以产品产量表为例,一个工厂(用code表示)生产多种产品(用p_id表示),每种产品具有生产量(v1)和销售量(v2)$ [; s& t- W* T- [
产品代码具有审核关系,比如’10’=’30’+’31’,其中’10’代表大类,’30’和’31’代表’10’大类下的小类。
; n* E: U+ ~7 ], Y2 k6 w; G9 ^: [( y SQL> create table t603 (code varchar(10),p_id varchar(7),v1 number(10),v2 number(10));
& W$ u( K2 K. h: B' g Table created.
1 Z1 o; Z% f4 g1 v6 u SQL> insert into t603 values(’600001’,’30’,1,1);6 T& g8 p- L, ^! L# C0 n6 S. h
SQL> insert into t603 values(’600001’,’31’,1,1);
. U/ Y( ~3 ^: E& _! g# h SQL> insert into t603 values(’600001’,’10’,2,2);) [) A( L4 {# T
SQL> insert into t603 values(’600002’,’10’,3,2);
: d: L X3 m! a, i; b SQL> insert into t603 values(’600002’,’31’,2,1);
4 o, q7 _; A. R; A" _ N SQL> insert into t603 values(’600002’,’30’,2,1);1 W$ U; A8 N; c' z1 v
SQL> commit;
1 {" O9 L1 t: ?( r% w" m+ O& L: F Commit complete.
$ u" x# w; B4 p0 i SQL> select * from t603;, A# e R. i) p/ f; M
CODE P_ID V1 V27 I. _4 ?. Q- o7 Q, v N
600001 30 1 1
* W! d5 h' d; d8 g2 M 600001 31 1 11 O& |# i0 X A4 x! |
600001 10 2 26 M' i, W; d! I- _* t, C
600002 10 3 25 q U3 r0 `1 k4 x6 }
600002 31 2 1
$ p x! d( i1 s( X 600002 30 2 1, v$ v1 T! y9 h5 n: D
6 rows selected.
2 Z; r+ L! I( V6 S4 P SELECT code,
! p: A4 ?7 [& `6 E. { p_id, v1
. c! N( r! h- q FROM t603# F0 C' {+ O+ P9 L1 @
WHERE code IN (’600001’,’600002’)% f4 `# J# O5 ~/ U7 l( P
MODEL RETURN UPDATED ROWS, C( W5 h/ i- \/ s0 ~, b% M/ Y; S
PARTITION BY (code)# y, h/ z; Y5 X5 |+ b6 q$ d- w
DIMENSION BY (p_id)( I- }: z6 Y0 y6 _# }
MEASURES (v1)* W# G' t2 a1 P9 p$ C( U2 @( g. R
RULES (# K( c% w) g" F" q
v1[’err1’] = v1[’30’] + v1[’31’] -v1[’10’])
2 U" a) g3 J& s# @" K3 I: L ORDER BY code, p_id;) P) q* s, B2 T6 K1 b( O2 t
其中rule表示计算规则,’err1’表示这条审核关系的代号,它的值等于P_ID为’30’的v1值+P_ID为’31’的v1值-P_ID为’10’的v1值
& ~4 s2 n) j! Z7 C PARTITION BY (code)表示按工厂分区,即审核在一个工厂内的产品
3 |4 w! H) z0 c) `2 e$ Y7 G# O+ p MODEL 关键字后面的 RETURN UPDATED ROWS 子句将结果限制为在该查询中创建或更新的那些行。使用该子句是使结果集只包含新计算的值,在本例中就是审核结果5 K$ `2 n/ X* y( p5 \
CODE P_ID V1. D1 A. s! ^. Y( T9 [+ c9 e
600001 err1 0, E& |( M3 k2 F l2 F0 {
600002 err1 1
9 Z3 h5 ^2 N1 u* X 如果返回值=0,表示v1[’30’] + v1[’31’] =v1[’10’]审核通过,否则,审核不通过9 N8 z! q5 [0 O' ~
SELECT code,0 C% C- R A4 a7 M
p_id, v1,v2" L v7 ^, c8 S9 `, g+ {
FROM t603- P7 G' T" H+ E) _; N+ {' D8 V
WHERE code IN (’600001’,’600002’)
0 ] N/ v% A! H% U) Q, A8 i1 W MODEL RETURN UPDATED ROWS
2 C0 k# n# |1 ]- V. k2 m. {/ m0 r, F PARTITION BY (code)4 A. H0 \3 v! ~. u. y c/ B
DIMENSION BY (p_id)
- [, P2 J4 K8 `5 ~2 F MEASURES (v1,v2)% d% x' M2 X# n8 g# Y! G, F
RULES (
& F5 D& e& N3 O0 u+ W' W o; q v1[’err1’] = v1[’30’] + v1[’31’] -v1[’10’],( z6 `' f# L5 k
v2[’err1’] = v2[’30’] + v2[’31’] -v2[’10’])
6 f" e6 K7 U: r! w# [ ORDER BY code, p_id;
2 |, _1 L+ z) c1 ]! o8 O CODE P_ID V1 V2; I$ ?% x: F& N* H( L
600001 err1 0 08 X7 @- E7 U Y D0 w2 B- q
600002 err1 1 0; h4 C$ l1 _9 m
如果表格中包含多个维度的数据,比如时间,多个维度都可以编写规则,比如2008年的审核关系8 H1 C# K9 z. ^) r
SELECT year,code,
5 P$ o5 C3 c) ?7 } p_id, v1
" F6 Z2 o. a% k8 Y FROM t603_1
# N# h: z. k& y- C WHERE code IN (’600001’,’600002’)
! r/ Y- y4 E" E: g) R MODEL RETURN UPDATED ROWS
' b6 E: t) V+ v9 Z$ E$ u3 a PARTITION BY (code)) k- U- E. O* V
DIMENSION BY (p_id,year)5 y9 f! V1 f& \) E6 A. v
MEASURES (v1)
/ I D0 a' K8 l7 a: t3 V; U% V RULES (
2 Z; ^1 \7 R( V; {* o' R4 i a/ b v1[’err1’,2008] = v1[’30’,2008] + v1[’31’,2008] -v1[’10’,2008])$ o( ]: z& W9 J9 {2 R
ORDER BY code, p_id;- U$ A/ l8 O" O5 A
YEAR CODE P_ID V1% e. e% [9 d, G' w; G2 E
2008 600001 err1 0
% A3 o I8 Z2 V2 X( A7 V% w 2008 600002 err1 1
3 ]6 s2 S0 R A( P 如果维度不影响规则,也可以只分区,而沿用原来的规则
/ v r; |9 \* z$ e! V6 b SELECT year,code,
. @4 V& e; ]. T0 A p_id, v1" Y! T8 o1 L$ c8 f# @" i
FROM t603_1
" M. g# u- @- t3 M3 B M WHERE code IN (’600001’,’600002’)+ `9 C6 {0 y; o: {% F
MODEL RETURN UPDATED ROWS! e: Q9 |' L) ?/ V3 B$ t
PARTITION BY (code,year)* w. i2 ?7 t' ]& G0 [
DIMENSION BY (p_id)5 L$ o" K3 k2 a
MEASURES (v1)5 O2 K3 ~) m" P! r) ?: a
RULES (
' Y0 i2 u' j0 T$ R* s7 }3 \; O. W v1[’err1’] = v1[’30’] + v1[’31’] -v1[’10’]), W) D9 G, M! D) M$ s# |! m8 V. q
ORDER BY code, p_id;( v$ l% H j% U8 h
YEAR CODE P_ID V1
( F2 I/ Z4 {9 v 2008 600001 err1 0
- ~, B" B8 ^& t 2008 600002 err1 1) F3 `3 }$ m0 c0 J
SQL> create table t603_2 as select * from t603_1;
. E: F3 J# {, L9 ~) Q Table created.
}# P& j9 e4 F% z8 m, i" ~( Y SQL> insert into t603_2 select ’2007’ year,code,p_id,v1,v2 from t603_1;
9 I' C, I: f9 B4 c' b8 p 6 rows created. |