That covers it extremely well.
cheers
andrew
Tom Lane wrote:
Andrew Dunstan <[EMAIL PROTECTED]> writes:
At the time I wrote the original 2.6 was not out even in prerelease, which is why I was deliberately somewhat vague about it. It is still in prerelease, and it will in fact work slightly differently from what was in some 2.4 kernels - there are 2 settings that govern this instead of 1.
Okay, I revised that section yet again based on this info: http://candle.pha.pa.us/main/writings/pgsql/sgml/kernel-resources.html#AEN17043 Thanks for the update.
regards, tom lane
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
