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Join on inequality
Message
De
11/10/2001 11:44:49
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivie
 
 
À
11/10/2001 11:31:56
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00566970
Message ID:
00567033
Vues:
11
>>I want to JOIN one table with another one. The fields should be joined by date. Instead of the exact date, I want to find a record, in the second table, whose date is closest (<=) to a certain date in the first table. In other words, an exact match may, or may not, exist.
>>
>>Can this be done with SQL - SELECT syntax? I was thinking about the workaround of writing a function that gets the PK of the second table, and then use that field for the join. However, I was wondering whether there was a simpler way to do this.
>>
>>TIA, Hilmar.
>
>Hilmar,
>
>Take a look at thread #550067. This question came up there and the solution was a non-SQL one. (or a combination)
>HTH

Thank, Crescencio. It seems I need to adapt some ideas from the thread you mentioned, especially message #550500, by Sergey.

Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
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