SQL SELECT from third level table

Posted by Spidermain50 on Stack Overflow See other posts from Stack Overflow or by Spidermain50
Published on 2010-12-28T22:57:46Z Indexed on 2010/12/29 7:54 UTC
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sql

Ok I know little about SQL so bare with me...

I'm trying to see if certain values exist in a third level table and I don't know how to go about it. Here is the scenario...

I have a Accident table that holds accident information. It has 3 one-to-many child tables (Units, Occupants, NonMotorists). An each of those child tables have their own many-to-many child table (Alcohol). I need to be able to have some way of seeing if a range of values exists in a field in those Alcohol tables. Here is watered down version of what my structure for the tables looks like...

--tblAccident--_  
PK_AccidentNumber    

--tblAccidentUnit--  
PK_PrimaryKey  
FK_AccidentNumber  

--tblAccidentOccupant--    
PK_PrimaryKey  
FK_AccidentNumber

--tblAccidentNonMotorist--  
PK_PrimaryKey  
FK_AccidentNumber

--tblAccidentUnitAlcohol--  
PK_PrimaryKey  
FK_ForeignKey  
AlcoholValue <---- THIS IS WHAT I NEED TO SEARCH   

--tblAccidentOccupantAlcohol--  
PK_PrimaryKey  
FK_ForeignKey  
AlcoholValue <---- THIS IS WHAT I NEED TO SEARCH   

--tblAccidentNonMotoristAlcohol--  
PK_PrimaryKey  
FK_ForeignKey  
AlcoholValue <---- THIS IS WHAT I NEED TO SEARCH

I hope this makes some sense as to what i am trying to accomplish. thank you

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Developer IT

SQL SELECT from third level table - Developer IT

SQL SELECT from third level table

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