Best way to design soundex based search -

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i have table of forum posts, , want improve basic search functionality lot of users on world not native english speakers , have trouble finding results when spell incorrectly. current forum search exact.

which of these designs perform best? assume database has 500,000 records , search used frequently. ideally search every record.

design one

along side each forum post, store soundex_post, contains soundex data. when search run, soundexes search terms, , operation on soundex fields.

design two

i normalise it. every soundex code stored in new table, tblsoundexcodes. there table tblforumpostsoundexcodes:

id | post_id | soundexcode_id | count

then when soundex searched for, pull out post_ids soundexcode_id = n

am correct method 2 considerably faster, lot harder maintain (ie, when people edit posts).

design 2 better.

design 2 won't faster. data storage more compact, , have update or insert row tblforumpostsoundexcodes, insert row tblsoundexcodes, when writes or updates post.

you'll have verify soundex transaction processing takes place every change post (create, update, delete).


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