|
Hi everyone,
I'm having trouble with this query in SQL (homework!).
I have two tables: customer and staff.
== Customer (the relevant fields) ==
customer_id
first_name
last_name
== Staff ==
staff_id
first_name
last_name
The question is: "select the first and last names of all customers and staff".
Can anybody help on how to do that? I don't know how to "append" the results of the two queries, and googling I can only find about INSERT ... SELECT, which is not what I'm looking for =\
Best regards to all.
Fratelli
|
|
|
|
|
Perhaps the keyword "UNION" may help you. 
Chris Meech
I am Canadian. [heard in a local bar]
In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]
posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]
|
|
|
|
|
It does indeed ! 
Thank you 
Fratelli
|
|
|
|
|
Hi Guys,
I have a problem to create data base.
My requirement is like
there are 4 different sites are there and every site has a common checklist to be checked and sites also have extra check list to checked with common check list, for this how i should create data base table.?
Thanks in advance
Vishwa
|
|
|
|
|
From you brief description;
I am assuming that you are using a central database.
I see that you would need to create a
site table (used to store the sites that will use the database)
Checklist Template (list of things to check off)
Checklist Completed table (a join table that links the site with the completed items from the template table)
Lobster Thermidor aux crevettes with a Mornay sauce, served in a Provençale manner with shallots and aubergines, garnished with truffle pate, brandy and a fried egg on top and Spam - Monty Python Spam Sketch
|
|
|
|
|
Thanks Simon
that extra check list are not common to all sites so. how can i relate those points
like which is required which is not for particular Site?
|
|
|
|
|
well in the check list completed table (more than likely not a good name) you could record the todo item and a datetime completed? and the site that it is linked to.
Lobster Thermidor aux crevettes with a Mornay sauce, served in a Provençale manner with shallots and aubergines, garnished with truffle pate, brandy and a fried egg on top and Spam - Monty Python Spam Sketch
|
|
|
|
|
Your description isn't clear enough, so here's a design that could be used for some interpretations of what you wrote.
0) There are several sites.
1) A check list has several check list items.
2) Each site has a check list with a subset of all available check list items.
3) Each check list item may be on several sites' check lists.
This is a classic many-to-many relationship and the typical implementation is to have (at least) three tables:
Site: ID, Name, etc.
Item: ID, Name, etc.
SiteList: SiteID, ItemID (usually no other data here, but maybe in some cases)
Another schema would allow for defining lists and assigning them to sites:
Site: ID, Name, etc.
Item: ID, Name, etc.
List: ID, Name, etc.
ListItem: ListID, ItemID (usually no other data here, but maybe in some cases)
SiteList: SiteID, ListID (usually no other data here, but maybe in some cases)
This second way may be approriate for your needs, you can define a common list and custom lists and assign multiple lists to the sites. Getting a complete list of all items for a site is simple as well.
|
|
|
|
|
I've some data, there are
RealData Balance Sort by Desc
A 684 345 A 684
B 60 - E 308
C - - J 302
D - - I 273
E 308 - O 178
F - - H 140
G 11 - B 60
H 140 - N 27
I 273 - Q 22
J 302 - R 20
K - - P 14
L - - G 11
M - - C -
N 27 - D -
O 178 38 F -
P 14 - K -
Q 22 - L -
R 20 4 M -
Description
Proc = Process
Res = Result
Sort by Desc
Get 8 row data
Proc 1 Res 1 Proc 2 Res 2 Proc 3 Res 3 Proc 4 Res 4 Finish for 8 row data
A 684 657 A 657 635 A 635 621 A 621 610 A 610
E 308 281 E 281 259 E 259 245 E 245 234 E 234
J 302 275 J 275 253 J 253 239 J 239 228 J 228
I 273 246 I 246 224 I 224 210 I 210 199 I 199
O 178 151 O 151 129 O 129 115 O 115 104 O 104
H 140 113 H 113 91 H 91 77 H 77 66 H 66
B 60 33 B 33 11 R 20 6 B 11 - R 6
N 27 - Q 22 - P 14 - G 11 - B -
Q 22 22 R 20 20 B 11 11 R 6 6 G -
R 20 20 P 14 14 G 11 11 P - - P -
P 14 14 G 11 11 Q - - Q - - Q -
G 11 11 N - - N - - N - - N -
C - - C - - C - - C - - C -
D - - D - - D - - D - - D -
F - - F - - F - - F - - F -
K - - K - - K - - K - - K -
L - - L - - L - - L - - L -
M - - M - - M - - M - - M -
Result 1 27
Result 2 22
Result 3 14
Result 4 11
Total 1 74 (For 8 row data)
Get 4 row data
Proc 1 Res 1 Proc 2 Res 2 Proc 3 Res 3 Finish for 4 row data
A 610 411 A 411 376 A 376 347 A 347 345
E 234 35 O 104 69 O 69 40 O 40 38
J 228 29 H 66 31 H 31 2 R 6 4
I 199 - E 35 - J 29 - H 2 -
O 104 104 J 29 29 R 6 6 J - -
H 66 66 R 6 6 E - - E - -
R 6 6 I - - I - - I - -
B - - B - - B - - B - -
G - - G - - G - - G - -
P - - P - - P - - P - -
Q - - Q - - Q - - Q - -
N - - N - - N - - N - -
C - - C - - C - - C - -
D - - D - - D - - D - -
F - - F - - F - - F - -
K - - K - - K - - K - -
L - - L - - L - - L - -
M - - M - - M - - M - -
Result 1 199
Result 2 35
Result 3 29
Result 4 2
Total 2 265 (For 4 row data)
How to get this data using Query or Function? And how to using in PHP?
Please help!
Thank you.
Jimmy
modified 5-Dec-12 2:24am.
|
|
|
|
|
Create a connection to the database (unknown as you did not name it)
Create a query to extract the data from the unknown database
Put the results of the query in your collection (PHP and is nothing to do with the database)
So the only relevant information you have given us is PHP in a DATABASE forum! Find a tutorial about PHP and your unknown database and work through the tutorial. Come back and ask SPECIFIC questions when you have trouble!
Never underestimate the power of human stupidity
RAH
|
|
|
|
|
Hi, Mycroft Holmes
Thank for reply.
You means the data can not using Query (MySQL) but use PHP.
Okay I move this forum to Web development. But how to move this topic to Web Development?
Thanks
|
|
|
|
|
I have a simple SQL table as follows:
CREATE TABLE [dbo].[DaysMonth](
[SNo] [int] NOT NULL,
[Month] [varchar](20) NOT NULL,
[Year] [varchar](4) NOT NULL,
[NoOfDays] [int] NOT NULL,
[Days] [nchar](10) NULL,
[Holiday] [nchar](1) NULL,
[ToDate] [date] NULL,
[Period] [nchar](30) NULL,
Following is the query:
Select SNo, NoOfDays, [Month], [Year], [Days], [Holiday] From DaysMonth Where [Period]='November,2012' order by ToDate
Now, i'm using this query in web application using ASP.Net environment and C# language within a loop. using SQL Server 2008. basic purpose here is to get all days within a period, say January,2012 in a sorted manner.
Out of 100 times running this query, 97-98 times, it's producing correct result, however, 1-2 times, sort is not working, so instead of 1st to 31st, output coming like 10th to 31st then 1st to 10th. Getting puzzled, as it's a huge application running on multi-user environment, getting very difficult to take care of error which is absolutely unpredictable and illogical. Please suggest where is the problem, thanks to all in advance.
|
|
|
|
|
Did you try:
Select SNo, NoOfDays, [Month], [Year], [Days], [Holiday] From DaysMonth Where [Period]='November,2012' order by ToDate ASC
Perhaps the direct order of sorting with "ASC" could help.
AnirbanM 2 wrote: Now, i'm using this query in web application using ASP.Net environment and C# language within a loop
Can't you let the SQL-Statement do the work of the loop? It would be more effective!
------------------------------
Author of Primary ROleplaying SysTem
How do I take my coffee? Black as midnight on a moonless night.
War doesn't determine who's right. War determines who's left.
|
|
|
|
|
Thanks, I will try but as sort is set by default as ASC in SQL server, I never put asc separately.
|
|
|
|
|
AnirbanM 2 wrote: Out of 100 times running this query, 97-98 times, it's producing correct result, however, 1-2 times, sort is not working, so instead of 1st to 31st, output coming like 10th to 31st then 1st to 10th.
From that, I'd say you have different collations (or regional settings on the client). But AFAIK, that would only apply to string-types, like VARCHAR and NTEXT.
Try converting the datetime to a fixed-format string, and sort on that.
|
|
|
|
|
Thanks for your reply. In SQL server, regional setting is set as default. Moreover, I need to do sorting based on Date only otherwise, it will defeat my purpose. However, as you are saying, i will try to do so.
|
|
|
|
|
I got a gut-feeling saying it's converting to DATE to a VARCHAR, that's the only way to have 10 precede the number 2.
Contrary to the previous advice, what happens when you cast it to a DOUBLE? Internally, a date is a floating-point number.
|
|
|
|
|
I notice that your table has Month, Year, Days all as character. If the sort uses these columns it might produce your problem.
|
|
|
|
|
Thanks for varchar columns are not included in sorting.
|
|
|
|
|
Always always always store date/time related values as DATE, DATETIME, etc.; never as string.
|
|
|
|
|
His ToDate is stored as a Date type, first thing I looked for!
Never underestimate the power of human stupidity
RAH
|
|
|
|
|
|
And yet his OrderBy is Todate
Never underestimate the power of human stupidity
RAH
|
|
|
|
|
Which is an all-you-can-eat sushi place -- very fishy indeed... 
|
|
|
|
|
Thanks for your reply, however, i'm not getting your point, if i'm sorting based on date and other fields are characters, what's the problem? If anything there, i will surely change it.
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
