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)
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。
SQL> create table t603 (code varchar(10),p_id varchar(7),v1 number(10),v2 number(10));
Table created.
SQL> insert into t603 values(’600001’,’30’,1,1);
SQL> insert into t603 values(’600001’,’31’,1,1);
SQL> insert into t603 values(’600001’,’10’,2,2);
SQL> insert into t603 values(’600002’,’10’,3,2);
SQL> insert into t603 values(’600002’,’31’,2,1);
SQL> insert into t603 values(’600002’,’30’,2,1);
SQL> commit;
Commit complete.
SQL> select * from t603;
CODE P_ID V1 V2
600001 30 1 1
600001 31 1 1
600001 10 2 2
600002 10 3 2
600002 31 2 1
600002 30 2 1
6 rows selected.
SELECT code,
p_id, v1
FROM t603
WHERE code IN (’600001’,’600002’)
MODEL RETURN UPDATED ROWS
PARTITION BY (code)
DIMENSION BY (p_id)
MEASURES (v1)
RULES (
v1[’err1’] = v1[’30’] + v1[’31’] -v1[’10’])
ORDER BY code, p_id;
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
PARTITION BY (code)表示按工厂分区，即审核在一个工厂内的产品
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
CODE P_ID V1
600001 err1 0
600002 err1 1
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
SELECT code,
p_id, v1,v2
FROM t603
WHERE code IN (’600001’,’600002’)
MODEL RETURN UPDATED ROWS
PARTITION BY (code)
DIMENSION BY (p_id)
MEASURES (v1,v2)
RULES (
v1[’err1’] = v1[’30’] + v1[’31’] -v1[’10’],
v2[’err1’] = v2[’30’] + v2[’31’] -v2[’10’])
ORDER BY code, p_id;
CODE P_ID V1 V2
600001 err1 0 0
600002 err1 1 0
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
SELECT year,code,
p_id, v1
FROM t603_1
WHERE code IN (’600001’,’600002’)
MODEL RETURN UPDATED ROWS
PARTITION BY (code)
DIMENSION BY (p_id,year)
MEASURES (v1)
RULES (
v1[’err1’,2008] = v1[’30’,2008] + v1[’31’,2008] -v1[’10’,2008])
ORDER BY code, p_id;
YEAR CODE P_ID V1
2008 600001 err1 0
2008 600002 err1 1
如果维度不影响规则，也可以只分区，而沿用原来的规则
SELECT year,code,
p_id, v1
FROM t603_1
WHERE code IN (’600001’,’600002’)
MODEL RETURN UPDATED ROWS
PARTITION BY (code,year)
DIMENSION BY (p_id)
MEASURES (v1)
RULES (
v1[’err1’] = v1[’30’] + v1[’31’] -v1[’10’])
ORDER BY code, p_id;
YEAR CODE P_ID V1
2008 600001 err1 0
2008 600002 err1 1
SQL> create table t603_2 as select * from t603_1;
Table created.
SQL> insert into t603_2 select ’2007’ year,code,p_id,v1,v2 from t603_1;
6 rows created.
