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Join on inequality
Message
From
11/10/2001 10:45:00
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivia
 
 
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Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Title:
Join on inequality
Miscellaneous
Thread ID:
00566970
Message ID:
00566970
Views:
42
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.
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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