Обсуждение: Table Join (Maybe?)

<div class="Section1"><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Hi again all,</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">I have two tables:</span></font><p class="MsoNormal" style="text-indent:36.0pt"><font face="Arial"
size="2"><spanstyle="font-size:10.0pt;font-family:Arial">1. Sales figures by date and customer.</span></font><p
class="MsoNormal"style="text-indent:36.0pt"><font face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial">2.Customer details – including their </span></font><font face="Arial"
size="2"><spanstyle="font-size: 10.0pt;font-family:Arial">Geographic</span></font><font face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial"></span></font><font face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial">State</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">I need to extract a report from the first table (I can do that!), and in that report order by their
State(I can do that too!), but I also need a summary of all the customers in each state, below the end of each state,
andhave a grand total at the bottom.</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Eg:</span></font><p class="MsoNormal"><font face="Courier New" size="2"><span
style="font-size:10.0pt;
font-family:"Courier New"">Customer 1  State 1     $100.00</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">Customer 2  State 1     $100.00</span></font><p class="MsoNormal"
style="margin-left:36.0pt;text-indent:36.0pt"><fontface="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew"">State 1     $200.00</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">Customer 3  State 2     $100.00</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">Customer 4  State 2     $100.00</span></font><p class="MsoNormal"
style="margin-left:36.0pt;text-indent:36.0pt"><fontface="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew"">State 2     $200.00</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">Grand Total             $400.00</span></font><p class="MsoNormal"><font face="Arial"
size="2"><spanstyle="font-size:10.0pt; 
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Does anyone have any magic pointers for me? I’ve been playing with SELECT INTO as 2 queries (the
individualcustomers, then the summary figures added to the temp table) but I end up with ROWS IN FIRST QUERY * ROWS IN
SECONDQUERY instead of them all sorted together nicely </span></font><font face="Wingdings" size="2"><span
style="font-size:10.0pt;font-family:Wingdings">L</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Thanks all,</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial">-p</span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Table Defs:</span></font><p class="MsoNormal"><font face="Courier New" size="2"><span
style="font-size:10.0pt;
font-family:"Courier New"">CREATE TABLE sales_figures</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">(</span></font><p class="MsoNormal"><font face="Courier New" size="2"><span
style="font-size:10.0pt;
font-family:"Courier New"">  rep_date date NOT NULL,</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">  store varchar(6) NOT NULL,</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">  sales_value numeric DEFAULT 0,</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">  sales_customers int4 DEFAULT 0,</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">  CONSTRAINT sales_figures_pkey PRIMARY KEY (rep_date, store),</span></font><p
class="MsoNormal"><fontface="Courier New" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">  CONSTRAINT sales_figures_store FOREIGN KEY (store)</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">      REFERENCES stores (code) MATCH SIMPLE</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">      ON UPDATE NO ACTION ON DELETE NO ACTION</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">)</span></font><p class="MsoNormal"><font face="Courier New" size="2"><span
style="font-size:10.0pt;
font-family:"Courier New""> </span></font><p class="MsoNormal"><font face="Courier New" size="2"><span
style="font-size:10.0pt;
font-family:"Courier New"">CREATE TABLE stores</span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New"">(</span></font><p class="MsoNormal"><font face="Courier New" size="2"><span
style="font-size:10.0pt;
font-family:"Courier New"">  code varchar(2) NOT NULL DEFAULT ''::character varying,</span></font><p
class="MsoNormal"><fontface="Courier New" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">  name varchar(32) NOT NULL DEFAULT ''::character varying,</span></font><p
class="MsoNormal"><fontface="Courier New" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">  bms varchar(1) DEFAULT 'Y'::character varying,</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">  state text DEFAULT 'UNKNOWN'::text,</span></font><p class="MsoNormal"><font face="Courier
New"size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">  business_open varchar(1) DEFAULT 'Y'::character varying,</span></font><p
class="MsoNormal"><fontface="Courier New" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">  CONSTRAINT stores_pkey PRIMARY KEY (code)</span></font><p class="MsoNormal"><font
face="CourierNew" size="2"><span style="font-size:10.0pt; 
font-family:"Courier New"">)</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Phillip Smith<br /> IT Coordinator<br /> Weatherbeeta P/L<br /></span></font><font face="Arial"
size="2"><spanstyle="font-size:10.0pt;font-family: Arial">8 Moncrief Rd</span></font><font face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial"><br/> Nunawading, VIC, 3131<br /></span></font><font face="Arial"
size="2"><spanstyle="font-size:10.0pt;font-family: Arial">AUSTRALIA</span></font><p class="MsoNormal"><font face="Times
NewRoman" size="3"><span style="font-size: 
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> I have two tables: 
> 1. Sales figures by date and customer.
> 2. Customer details - including their Geographic State
> I need to extract a report from the first table (I can do that!), and in
> that report order by their State (I can do that too!), but I also need a
> summary of all the customers in each state, below the end of each state, and
> have a grand total at the bottom.
> Eg:
> Customer 1  State 1     $100.00
> Customer 2  State 1     $100.00
> State 1     $200.00
> Customer 3  State 2     $100.00
> Customer 4  State 2     $100.00
> State 2     $200.00
> Grand Total             $400.00
> Does anyone have any magic pointers for me? I've been playing with SELECT
> INTO as 2 queries (the individual customers, then the summary figures added
> to the temp table) but I end up with ROWS IN FIRST QUERY * ROWS IN SECOND
> QUERY instead of them all sorted together nicely :-(

I do not believe that a single "query" will give you what you want here.  YOU could have 3
seperate queries:
1 for customer detail by state.
1 for state total 
1 for grand total

However, if you use a reporting tool like crystal or others, they have the ability to generate
summaries exactly as you are referring to here.  you would only need to pass it the query on total
per customer.  The reporting utility has a groupby feature where it would group the customers by
state for your.  In the group by summary it would automaticly display state total.  Then if the
report footer you could add a grand total summary for all of the records you passed to the report.

The following link show some of the reporting programs that you can use.
http://www.postgresql.org/community/survey.43 

Regards,
Richard Broersma Jr.

Phillip Smith wrote:
>
> Hi again all,
>
> I have two tables:
>
> 1. Sales figures by date and customer.
>
> 2. Customer details – including their Geographic State
>
> I need to extract a report from the first table (I can do that!), and 
> in that report order by their State (I can do that too!), but I also 
> need a summary of all the customers in each state, below the end of 
> each state, and have a grand total at the bottom.
>
> Eg:
>
> Customer 1 State 1 $100.00
>
> Customer 2 State 1 $100.00
>
> State 1 $200.00
>
> Customer 3 State 2 $100.00
>
> Customer 4 State 2 $100.00
>
> State 2 $200.00
>
> Grand Total $400.00
>
> Does anyone have any magic pointers for me? I’ve been playing with 
> SELECT INTO as 2 queries (the individual customers, then the summary 
> figures added to the temp table) but I end up with ROWS IN FIRST QUERY 
> * ROWS IN SECOND QUERY instead of them all sorted together nicely L
>
> Thanks all,
>
> -p
>
Well, two queries one for the individual totals and one for the summary 
totals is good (maybe a third for the grand total), but you should do a 
union of the two and then play with the order by and/or group by clauses 
(depending on the data) to get the ordering that you want. I can't even 
count the times I've spent banging my head against the proverbial wall 
(you do have a proverbial wall don't you?) trying to get these kinds of 
queries to work with joins, sub-queries, case statements, etc... only to 
come back to using union on simple, to-the-point queries.

-- 
erik jones <erik@myemma.com>
software development
emma(r)