>>http://dev.mysql.com/doc/refman/4.1/en/ix01.html
http://dev.mysql.com/doc/refman/4.1/en/comparison-operators.html
>>===MySQL Functions===

==concat==
concatenate two columns
%%(sql)
select concat ( 'my' , 'sql' )
%%

==coalesce==
return first non null column
%%(sql)
select coalesce ( col1 , col2 )
%%

==conv==
convert from one base to another (hex2dec)
%%
SELECT
conv(mid(hexcolour,1,2),16,10) as r,
conv(mid(hexcolour,3,2),16,10) as g,
conv(mid(hexcolour,5,2),16,10) as b
FROM 
hexcolours 
%%

==convert==
use convert to convert character sets

%%
select CONVERT( _utf8 'asdfasdfasdf' using latin1 )
%%

==interval==
Use "interval" to create a month range 
%%
select <date> between '20070701' and '20070701' + interval 1 month - interval 1 day 
%%

==replace==
replace all instances of old with new
%%(sql)
select replace( col, old, new )
%%

==locate==
locate string
%%(sql)
select locate( search, string, start )
%%

==substring==
get substring
%%(sql)
select substring( col, start, length )
%%

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REFERRERS
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