MS Access 03 查询条件
如果我有一个跟踪每个月多个帐户的数据的报告，其中行标记为：
UNITS,
REVENUE,
AVG REV/UNIT
我将如何创建一个查询来过滤报告以仅显示单位行增加/减少 25% 且 AVG REV/UNIT 增加的帐户与上月相比当月增加/减少10%。
一个例子是 6 月份，我有数字......
JUN
UNITS 3,271
Revenue $3,598.10
Avg R/U $1.08
因此，当我在 7 月底运行报告时，我只想要单位数有 25% 差异和/或 AVG REV 有 10% 差异的账户/UNIT 显示在报告上。
qryPharmacy
SELECT PHAR_REPORT.*, (IIf(u1 Is Null,0,u1)+IIf(u2 Is Null,0,u2)+IIf(u3 Is Null,0,u3)+IIf(u4 Is Null,0,u4)+IIf(u5 Is Null,0,u5)+IIf(u6 Is Null,0,u6)+IIf(u7 Is Null,0,u7)+IIf(u8 Is Null,0,u8)+IIf(u9 Is Null,0,u9)+IIf(u10 Is Null,0,u10)+IIf(u11 Is Null,0,u11)+IIf(u12 Is Null,0,u12)) AS USUM, (IIf(r1 Is Null,0,r1)+IIf(r2 Is Null,0,r2)+IIf(r3 Is Null,0,r3)+IIf(r4 Is Null,0,r4)+IIf(r5 Is Null,0,r5)+IIf(r6 Is Null,0,r6)+IIf(r7 Is Null,0,r7)+IIf(r8 Is Null,0,r8)+IIf(r9 Is Null,0,r9)+IIf(r10 Is Null,0,r10)+IIf(r11 Is Null,0,r11)+IIf(r12 Is Null,0,r12)) AS RSUM, RMonth.*, PG2.*, PG.pGroup
FROM PHAR_REPORT, RMonth, PG2, PG
WHERE (((PHAR_REPORT.PR) Like ([PCODE] & '*')) And ((PG.pID)=PG2.PID))
ORDER BY PG2.pID, PHAR_REPORT.PR;
If I have a report that tracks data for several accounts for each month with rows labeled:
UNITS,
REVENUE,
AVG REV/UNIT
How would I create a query that will filter the report to just show accounts where the UNITS row has increase/decreased 25% and the AVG REV/UNIT has increased/decreased 10%, from the previous month to the current month.
An example would be for the month of June I have the numbers....
JUN
UNITS 3,271
Revenue $3,598.10
Avg R/U $1.08
So when I run the report at the end of July I only want accounts that have a 25% difference in UNITS and/or a 10% difference in AVG REV/UNIT to show on a report.
qryPharmacy
SELECT PHAR_REPORT.*, (IIf(u1 Is Null,0,u1)+IIf(u2 Is Null,0,u2)+IIf(u3 Is Null,0,u3)+IIf(u4 Is Null,0,u4)+IIf(u5 Is Null,0,u5)+IIf(u6 Is Null,0,u6)+IIf(u7 Is Null,0,u7)+IIf(u8 Is Null,0,u8)+IIf(u9 Is Null,0,u9)+IIf(u10 Is Null,0,u10)+IIf(u11 Is Null,0,u11)+IIf(u12 Is Null,0,u12)) AS USUM, (IIf(r1 Is Null,0,r1)+IIf(r2 Is Null,0,r2)+IIf(r3 Is Null,0,r3)+IIf(r4 Is Null,0,r4)+IIf(r5 Is Null,0,r5)+IIf(r6 Is Null,0,r6)+IIf(r7 Is Null,0,r7)+IIf(r8 Is Null,0,r8)+IIf(r9 Is Null,0,r9)+IIf(r10 Is Null,0,r10)+IIf(r11 Is Null,0,r11)+IIf(r12 Is Null,0,r12)) AS RSUM, RMonth.*, PG2.*, PG.pGroup
FROM PHAR_REPORT, RMonth, PG2, PG
WHERE (((PHAR_REPORT.PR) Like ([PCODE] & '*')) And ((PG.pID)=PG2.PID))
ORDER BY PG2.pID, PHAR_REPORT.PR;
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您应该通过多个查询来完成此操作。在第一个查询中，选择第一个月的数据。第二步，到所需的月份进行比较。创建第三个查询来链接前两个查询（注意正确的关系）。在这些查询中进行分组/计算。
在第三个查询中，创建两个字段来计算单位和转速/单位的增加/减少。现在，您可以在查询列中的每个参数字段上添加标准。
这里的挑战是确定您在几个月内如何使用主键。例如：如果第一个查询中的 A 行不在第二个查询中（例如，第二个月没有事件），则不会显示该行。在这种情况下，解决方案是创建链接具有整组寄存器的表或查询的查询，强制它显示所有所需的记录，无论它们是否出现。
You should do it with more than one query. In the first query, select the data for the first month. On a second, to the desired month to compare. Create a third query that links the two first (be care about the correct relationship). Do the grouping/calculations in these queries.
In the 3rd query, create two fields that calculates increasing/decreasing for units and rev/unit. Now, you can add a criterium on each parameter field in the query columns.
The chalenge here is to be sure about hou would you work with the primary keys on months. Eg: if a A row in the first query isn't in the second (for not having an event on second month, for example), it will not be showed. In this case, the solution would be to create the queryes linking a table or query wich has the entyre set of registers, forcing it to show all the desired records despite they have or not occurrences.