Re: AND OR NOT

David, I'm under pressure to permit AND, OR & NOT. My research group insists that MySQL 4 syntax is "not good enough". An idea of what one might enter is here (on the bottom): http://compcanlit.usherbrooke.ca/advanced.html I was hoping to get away with replacing " AND " with "+", " NOT " with "-" and " OR " with " ". I use this as SQL: SELECT *,MATCH (YR,AU,ST,SD,SC,BT,BD,BC,AT,AD,AC,JR,KW,AUS,TUS,GEO,AN,SA,RB) AGAINST ('$mydata->searchenquiry' IN BOOLEAN MODE) AS relevancy FROM ccl_main WHERE MATCH (YR,AU,ST,SD,SC,BT,BD,BC,AT,AD,AC,JR,KW,AUS,TUS,GEO,AN,SA,RB) AGAINST ('$mydata->searchenquiry' IN BOOLEAN MODE) ORDER BY relevancy DESC;--> John David Robley wrote:

John Taylor-Johnston wrote:

Any ideas? Post kind of lost in there since Saturday. Is str_replace the best choice for case sensitive and for swapping " AND "?

<input TYPE="text" NAME="searchenquiry" VALUE="" size=30> Any suggestion on how to swap AND OR NOT for mysql fulltext syntax in $searchenquiry? A simple parse for " AND " and then str_replace? Is str_replace appropriate for case?

John

I think you have a slightly more complex situation than just replacing text between what I assume is a LIKE or multiple WHERE situation and a fulltext search. Perhaps if you can give an idea of the type of string you are likely to get in $searchenquiry, and to what you wish to convert it, we might be better placed to give advice. I can envisage that you might get 'bananas NOT pears AND apples' in the variable; I guess you would currently manipulate that to a query such as "WHERE x = 'bananas' AND x <> 'pears' AND x = 'apples'" (OK that's not a good example) but if you were to feed that to a fulltext search you might want WHERE MATCH (x) AGAINST ('+bananas -pears -apples' IN BOOLEAN MODE) or maybe something else depending on the version of Mysql and exactly what you are trying to do with your fulltext search.

-- John Taylor-Johnston ----------------------------------------------------------------------------- "If it's not Open Source, it's Murphy's Law." °v° Bibliography of Comparative Studies in Canadian, Québec and Foreign Literatures /(_)\ Université de Sherbrooke ^ ^ http://compcanlit.ca/ T: 819.569.2064 -- John Taylor-Johnston ----------------------------------------------------------------------------- "If it's not Open Source, it's Murphy's Law." ' ' ' Collège de Sherbrooke: ô¿ô http://www.collegesherbrooke.qc.ca/languesmodernes/ - 819-569-2064 °v° Bibliography of Comparative Studies in Canadian, Québec and Foreign Literatures /(_)\ Université de Sherbrooke ^ ^ http://compcanlit.ca/ T: 819.569.2064