| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | lockhart(at)alumni(dot)caltech(dot)edu (Thomas G(dot) Lockhart) |
| Cc: | hackers(at)postgreSQL(dot)org (PostgreSQL-development) |
| Subject: | type coersion |
| Date: | 1998-08-08 06:42:07 |
| Message-ID: | 199808080642.CAA10950@candle.pha.pa.us |
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| Thread: | |
| Lists: | pgsql-hackers |
Let me ask about type coersion.
When you have an int2 column called x, how do you place the conversion
functions when it is being compared to an in4 constant?
x = int2(500)
int4(x) = 500
The first is good for indexing, the second is not. If they are both
variables or both constants, the handling does not matter.
--
Bruce Momjian | 830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us | Drexel Hill, Pennsylvania 19026
+ If your life is a hard drive, | (610) 353-9879(w)
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