Add some more comments for SQLParserUtils class.
Add some more comments for SQLParserUtils class.

sarcher/dbal,DataSyntax/dbal,hason/dbal,v-bartusevicius/dbal,stof/dbal,PureBilling/dbal,kupishkis/dbal,Tobion/dbal,easybiblabs/dbal,mathroc/dbal,sarcher/dbal,AlexDpy/dbal,easybiblabs/dbal,mihai-stancu/dbal,cassvail/dbal,shivergard/dbal,bspeterson/dbal,mariuz/dbal,janschoenherr/dbal,mathroc/dbal,Tobion/dbal,PowerKiKi/dbal,nfrignani/dbal,stchr/dbal,adrienbrault/dbal,vutung2311/dbal,webonyx/dbal,arima-ryunosuke/dbal,mRoca/dbal,gencer/dbal,mariuz/dbal,arima-ryunosuke/dbal,shivergard/dbal,sarcher/dbal,drieschel/dbal,LionwareSolutions/dbal,wuxu92/dbal,hason/dbal,deeky666/dbal,AlexDpy/dbal,vortgo/dbal,LionwareSolutions/dbal,deeky666/dbal,kupishkis/dbal,vutung2311/dbal,PureBilling/dbal,kupishkis/dbal,kimhemsoe/dbal,DHager/dbal,bspeterson/dbal,janschoenherr/dbal,lafourchette/dbal,adrienbrault/dbal,DHager/dbal,cassvail/dbal,tk-s/dbal,mihai-stancu/doctrine-dbal,lafourchette/dbal,hason/dbal,lcobucci/dbal,stof/dbal,webonyx/dbal,webonyx/dbal,BenMorel/dbal,webmozart/doctrine-dbal,mikeSimonson/dbal,wuxu92/dbal,PowerKiKi/dbal,tk-s/dbal,BenMorel/dbal,DataSyntax/dbal,mihai-stancu/doctrine-dbal,gencer/dbal,kimhemsoe/dbal,stchr/dbal,easybiblabs/dbal,PowerKiKi/dbal,doctrine/dbal,lcobucci/dbal,helicon-os/doctrine-dbal,mikeSimonson/dbal,mbeccati/dbal,helicon-os/doctrine-dbal,Ocramius/dbal,adrienbrault/dbal,drieschel/dbal,nfrignani/dbal,LionwareSolutions/dbal,mihai-stancu/dbal,zeroedin-bill/dbal,mRoca/dbal,arima-ryunosuke/dbal,v-bartusevicius/dbal,Ocramius/dbal,mbeccati/dbal,mariuz/dbal,zeroedin-bill/dbal,vortgo/dbal,doctrine/dbal