Hi, I have a table with about 9M entries. The table has 2 fields: id
and name which are of serial and text types respectively. I have a
ordinary index on the text field which allows me to do searches in
reasonable time. Most of my searches are of the form
select * from mytable where name ~ 'some text query'
I know that the Tsearch2 module will let me have very efficient text
searches. But if I understand correctly, it's based on a language
specific dictionary.
My problem is that the name column contains names of chemicals. Now
for many cases this may simply be a number (1674-56-2) and in other
cases it may be an alphanumeric string (such as (-)O-acetylcarnitine
or 1,2-cis-dihydroxybenzoate). In some cases it is a well-known word
(say viagra or calcium chloride or pentathol).
My question is: will Tsearch2 be able to handle this type of text? Or
will it be hampered by the fact that the bulk of the rows do not
correspond to ordinary English
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Rajarshi Guha <[EMAIL PROTECTED]>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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My Ethicator machine must have had a built-in moral
compromise spectral phantasmatron! I'm a genius."
-Calvin
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
