SQL Store Routes of Hiking

Dear All
Thank you for your attention.
I am writing a hiking guide system that helps user to find out if they go wrong path.
I need to build a sytem that indicate the routes of hiking.
The hiking rules will be set by the chairman using an interface, so I need to store the rules in database.
A previous
discussion for using linked list to store the hiking routes
However, I underestimated the situations that may happen.
For example, I got the following rules come together
a) Multiple Possible Checkpoints
A > B or A > C (After checkpoint A, you can go to either B or C)
b) Skip CheckPoint
D > (E) > F or D > F (checkpoint E can be skipped)
c) Repeated Checkpoints
G > H > I > G > H > I > ... (If the action in checkpoint I is not passed, then you need to go back to checkpoint G again)
d) Group Optional Checkpoints
J > { K / L / M} > O (After checkpoint J, you can either go to K or L or M which is in the same group, let say checkpoints K, L and M are belongs to 'Water Area')
I need to let the chairman to define 'Water area' = { K / L / M }
and the the rules J > 'Water area' > O
My Search
I can think of using linked list to handle the above situations, but it is really complicated
e.g. to store the following rule P > Q / R / S > (T) > U / V > W > X > (P > ... W)
I need build many records
P > Q, P > R, P > S, P > Q > T, P > R > T, P > S > T, Q > T > U, ....
and it seems difficult to query and it is not a good database structure, anyone got ideas or experience on storing route like data? Any suggesstion? Many thanks
Best Regards
Ivan

Hi Ivan,
You can design the table like this. Simply put, the table contains 2 columns -
From, To
for a) Multiple Possible Checkpoints ruleS like A > B, A > C, there'll be 2 records
A > B
A > C
for b) Skip CheckPoint rules like D > (E) > F or D > F, there'll be 3 records
D > E
E > F
D > F
for c) Repeated Checkpoints rules like G > H > I > G > H > I > ..., we can break I down to 2 virtual checkpoints - I-success, I-fail, then we can have following records
G > H
H > I-success
H > I-fail
I-fail > G
for d) Group Optional Checkpoints like J > {K / L / M} > O, the records will be like
J > K
J > L
J > M
K > O
L > O
M > O
It doesn't require too many records. say for example, you have N checkpoints, the total number of records will be at most at the order of N^2 (in the extreme case where each pair of checkpoints are connected)
Hope this helps.
Ying
Thanks Ying
I am using that structure to build my system~
Best Regards
Ivan

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create table #chartData(
ChgText [varchar](500) NOT NULL,
ChgCount [int] NULL,
[Sort] [int] NOT NULL,
[PartcTot] [int] NULL,
PercentageOfTotal decimal(6,3)
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Can someone explain the code to me using comment especially what is going on in the
set @SQLString =

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-Vaibhav Chaudhari

Access Subform - Can the Subforms Source Object be defined by an SQL SP result set?

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There is a real issue here and it has nothing to do with the
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The workaround does seem to enter the number in the
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Paul Whitham
Certified Dreamweaver MX2004 Professional
Adobe Community Expert - Dreamweaver
Valleybiz Internet Design
www.valleybiz.net
"Lionstone" <[email protected]> wrote in
message
news:[email protected]...
> SQL Server does not store dates in any format. They are
simply numbers,
> with the integer part representing date and the
fractional part
> representing time. If you do not format dates on the way
out, then you're
> leaving things up to your web server (and depending on
when the dates
> become strings, it might be the ADO provider and not ASP
that does the
> formatting).
>
> The only way to reliably format dates the way you want
is to do so
> explicitly. You may use CONVERT for SQL Server and
specify a format
> option (
http://msdn2.microsoft.com/en-us/library/aa226054(SQL.80).aspx),
> or you may use the FormatDateTime function in your ASP
page.
> FormatDateTime is locale-aware when it formats dates.
All you have to do
> is make sure the locale is set properly (which you seem
to have done).
>
>
>
> "TTal" <[email protected]> wrote in message
> news:[email protected]...
>> Hello All,
>>
>> I have an asp page with a hidden field that holds
<%=Date()%>. Because
>> the Session.LCID is set to UK this value today would
be 12/03/2007 (UK
>> format).
>>
>> When this hidden field is fed into an INSERT Stored
Procedure in SQL
>> Server in my testing environment, the date format
that is inserted into
>> the database is the same as the value in the hidden
field eg 12/03/2007,
>> which is what I want.
>>
>> Now though, the site has moved to a production web
server with SQL
>> Server. When I perform this exact insert using the
same webpages and
>> (from what I can see) the same SQL Server
configuration, the date inserts
>> as 03/12/2007, US format. This is causing me big
problems as the website
>> is complete but the wrong dateformat is producing
some undesirable
>> results. The whole site is set up to expect the
original format and I
>> cannot see why this is happening.
>>
>> Does anyone have any suggestions and more
importantly how I can change
>> this please.
>>
>
>

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No Longer the problem

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Is there a v$parameter table which stores linesize

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thank you
Message was edited by:
briandwyer

so that i can change it back at the end.
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How can i return object from oracle in my java code using pl/sql procedure?

How can i return object from oracle in my java code using pl/sql procedure?
And How can i returned varios rows fron a pl/sql store procedure
please send me a example....
Thank you
null

yes, i do
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Hi
I have a SQL query (a store procedure ) that i want to convert to PLSQL
This is a part of my SQL query that i am trying to to find a solution for it, because i cant convert it to oracle :
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* how can i use a "dynamic" cursor, in order to be able to display the dynamic results ?
Thanks for the advice

Hi,
b003cf5e-e55d-4ff1-bdd2-f088a662d9f7 wrote:
Hi
I have a SQL query (a store procedure ) that i want to convert to PLSQL
This is a part of my SQL query that i am trying to to find a solution for it, because i cant convert it to oracle :
DECLARE lookupTableRow CURSOR FOR
SELECT TableName FROM SYS_LookUpTable
OPEN lookupTableRow
FETCH NEXT FROM lookupTableRow INTO @tableName
WHILE @@FETCH_STATUS=0
BEGIN
SET @sql='SELECT * FROM '+@tableName
EXECUTE sp_executesql @sql
IF @counter=0
BEGIN
INSERT INTO T_TABLE_MAPPING VALUES('P_MAIN_METADATA', 'Table', @tableName)
END
ELSE
BEGIN
INSERT INTO T_TABLE_MAPPING VALUES('P_MAIN_METADATA', 'Table'+CONVERT(NVARCHAR(10),@counter), @tableName)
END
SET @counter=@counter+1
FETCH NEXT FROM lookupTableRow INTO @tableName
END
CLOSE lookupTableRow
DEALLOCATE lookupTableRow
As i understand i can't use ORACLE dynamic sql (execute immediate) when the table name is a parameter
Furthermore when i execute this dynamic query in my SQL store procedure each SELECT statement return me as a result the relevant table rows , those result are different in each loop .
So i cant do this too with ORACLE dynamic sql .
Please advice for any solution
* how can i use dynamic sql with table name as parameter ?
* how can i use a "dynamic" cursor, in order to be able to display the dynamic results ?
Thanks for the advice
I have a SQL query (a store procedure ) that i want to convert to PLSQL
I doesn't help when you use one term to mean another thing.
SQL is a language used in both Oracle and other products, such as Microsoft's SQL Server. I don't know much about SQL Server, but Oracle (at least) doesn't support stored procedures in SQL itself; they have to be coded in some other language, such as PL/SQL.
As i understand i can't use ORACLE dynamic sql (execute immediate) when the table name is a parameter
If the table name is a parameter (or only known at run-time for any reason), that's exactly the kind of situation where you MUST use dynamic SQL.
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If you're just displaying the results, there might not be any reason to combine separate result sets. Just display one result set after another.
Whenever you have a question, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all the tables involved, and the results you want from that data.
Explain, using specific examples, how you get those results from that data.
Always say what version of Oracle you're using (e.g. 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002

Automate SQL Disaster Recovery

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--Hakeem

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The introduction of the CMS (xds database) complicates DR somewhat, so you will need to first assess what Lync services you require to be available in a DR situation.
Today, Lync provides voice resiliency quite well in a DR situation, but other services (IM and Presence, Conferencing) require more design work to provide availability in the event of disaster.
Justin Morris | Consultant | Modality Systems
Lync Blog - www.justin-morris.net
Twitter: @jm_deluxe
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