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SQL to include rec's without children?
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Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
SQL to include rec's without children?
Divers
Thread ID:
00226563
Message ID:
00226563
Vues:
54
My app has a parent table (A) with several child tables (B, C, D). Some parent records do not have associated records in on or more of it's child tables.

I use a SQL statement to a cursor for searching purposes. I know I can probably write a seperate SQL statement to get parents without children in table B but WITH children in C and D, and then another without children in C but with children in B and D... etc - and do a UNION between them all - but that's hard to write and hard to maintain!

Has anyone come up with a better way?

Here's my query:
SELECT Library.name AS Publication, LEFT(Library.descript,25) AS Description,;
Reps.name AS Representative, Linksect.sect_code AS Division, ;
Sections.descript AS Section_Name, Library.barcode, ;
Manuf.name AS Manufacturer ;
FROM library, Reps, LinkSect, Sections, Manuf, LinkManu ;
WHERE Library.code = Linksect.Lib_code ;
AND Library.code = LinkManu.Lib_Code ;
AND Library.rep_code = Reps.rep_code ;
AND Sections.Number = LinkSect.Sect_Code ;
AND LinkManu.Manuf_Code = Manuf.Code ;
INTO CURSOR Search_Me

TIA
Kogo Michael Hogan

"Pinky, are you pondering what I'm pondering?"
I think so Brain, but "Snowball for Windows"?

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