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Query Syntax Help

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Query Syntax Help MS SQL Development forum discussing administration, MS SQL queries, and other MS SQL-related topics. SQL Server is Microsoft's enterprise database engine.

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  #1  
Old April 21st, 2004, 12:18 PM
scottyardley scottyardley is offline
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Red face Query Syntax Help
Im having difficulty writting this sql. I have the three following tables and I want to output as listed below.


tblUser................tblUserToSkill.........tblSkill
+----+------+.....+----+-----+.....+----+-------+
| UID | USER |.....| UID | SID |.....| SID | SKILL |
+----+------+.....+----+-----+.....+----+-------+
| 124 | JOHN |.....| 124 | 100 |.....| 100 | SINGS |
| 258 | CARL |.....| 124 | 200 |.....| 200 | DANCE |
| 300 | LENY |.....| 300 | 100 |.....| 300 | BARKS |
+----+------+.....| 258 | 300 |.....+----+--------+
........................+-----|-----+


Output

+-----+------+-------+-------+------+
| UID | USER | SINGS | DANCE | BARK |
+-----+------+-------+-------+------+
| 124 | JOHN | ...1.... | ...1.... | NULL.|
| 258 | CARL | .NULL.. | .NULL..| ...1.. |
| 300 | TONY | ...1.... | .NULL..| .NULL|
+-----+------+------+-------+------+
Last edited by scottyardley : April 21st, 2004 at 12:41 PM.
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  #2  
Old April 21st, 2004, 02:49 PM
swampBoogie swampBoogie is offline
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Code:
select uid,user,
      (select 1 from tblUserToSkill where uid = tblUser.uid
                   and SID in (select sid from tblSkill 
                                where SKILL = 'SINGS')) as SINGS,
      (select 1 from tblUserToSkill where uid = tblUser.uid
                   and SID in (select sid from tblSkill 
                                where SKILL = 'DANCE')) as DANCE,
      (select 1 from tblUserToSkill where uid = tblUser.uid
                   and SID in (select sid from tblSkill 
                                where SKILL = 'BARKS')) as BARKS
from tblUser
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  #3  
Old April 21st, 2004, 03:05 PM
scottyardley scottyardley is offline
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Dynamic tbl content needs dynamic sql
The entries into the tables are ever changing so I cannot specify the field values in the query (i.e. dance, sing)
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  #4  
Old April 21st, 2004, 09:01 PM
Username=NULL Username=NULL is offline
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This may work
I can't test this...but see what you get...
Code:
Select	UID, User,
	Case
	  When US.SID = 100 Then '1'
	  Eslse 'null'
	End [Sings],
	Case
	  When US.SID = 200 Then '1'
	  Else 'null'
	End [Dance],
	Case
	  When US.SID = 300 Then '1'
	  Else 'null'
	End [Bark]
from	tblUser U
join	tblUserToSkill US on U.UID = US.UID
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  #5  
Old April 21st, 2004, 09:32 PM
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r937 r937 is offline
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Quote:
Originally Posted by scottyardley
The entries into the tables are ever changing so I cannot specify the field values in the query (i.e. dance, sing)

then the only way that i know how to do it is with microsoft access as a crosstab query, or something similar in a programming language

yes, technically you could do it with a cursor in a stored proc, but i don't consider that to be an sql solution, it's actually a programming solution
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  #6  
Old April 22nd, 2004, 07:24 PM
scottyardley scottyardley is offline
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I've aready chased down the crosstab query route. Here's and article for doing crosstab in MySQL:
http://dev.mysql.com/tech-resources...nt_version.html

I burned at least an hour on it. Some neat stuff and in the general direction of what Im looking for...but no cigar.

I would call it a programing solution for lack of a sql solution.
A many-to-many table is a great resourse for keeping a database small. I use them oftern. It would seem that the sql language would lend to a solution. I feel this is a short comming in sql language.

In a programming solution I would have to query, loop through the query then query for each item in the loop. This seems like alot of quering. Also too much code. Unfortunately that what I had to do.
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Old April 23rd, 2004, 03:48 AM
swampBoogie swampBoogie is offline
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