the LIKE part in the query is kinda like a WHERE only with a diffrent searchpatern. The % signs are also known as wildcards, a way to control the way matching data is found, as can be read here http://www.1keydata.com/sql/sqllike.html

you might also wanna check this pdf

http://www.spidynamics.com/papers/SQ...WhitePaper.pdf

chapter 3.2.5