added column type check
added column type check

oiami/otrs,brandonshults01/otrs,mburggraf/otrs,thorsteneckel/otrs,balazj/otrs,nilei/otrs,muehlbauer/otrs,noritnk/otrs,StCyr/otrs,linearregression/otrs,mburggraf/otrs,nilei/otrs,vlascoder/otrs,thorsteneckel/otrs,s7design/otrs,crythias/otrs,rudy500/otrs,s7design/otrs,rudy500/otrs,thorsteneckel/otrs,muehlbauer/otrs,nilei/otrs,oiami/otrs,mburggraf/otrs,noritnk/otrs,thorsteneckel/otrs,moritz/otrs,MBRG/otrs,linearregression/otrs,nilei/otrs,vlascoder/otrs,StCyr/otrs,MBRG/otrs,PortgasDAce/otrs,crythias/otrs,PortgasDAce/otrs,vlascoder/otrs,mburggraf/otrs,crythias/otrs,xhoy/otrs,capeit-tto/otrs,eliasp/otrs,balazj/otrs,brandonshults01/otrs,PortgasDAce/otrs,moritz/otrs,MBRG/otrs,s7design/otrs,oiami/otrs,moritz/otrs,balazj/otrs,nilei/otrs,muehlbauer/otrs,mbeijen/otrs-1,MBRG/otrs,muehlbauer/otrs,mbeijen/otrs-1,PortgasDAce/otrs,s7design/otrs,xhoy/otrs,noritnk/otrs,xhoy/otrs,linearregression/otrs,brandonshults01/otrs,PortgasDAce/otrs,crythias/otrs,moritz/otrs,linearregression/otrs,xhoy/otrs,muehlbauer/otrs,oiami/otrs,StCyr/otrs,brandonshults01/otrs,balazj/otrs,eliasp/otrs,moritz/otrs,mburggraf/otrs,thorsteneckel/otrs,capeit-tto/otrs,rudy500/otrs,oiami/otrs,crythias/otrs,rudy500/otrs,balazj/otrs,eliasp/otrs,xhoy/otrs,mbeijen/otrs-1,StCyr/otrs,linearregression/otrs,s7design/otrs,StCyr/otrs,brandonshults01/otrs,eliasp/otrs,eliasp/otrs,MBRG/otrs,capeit-tto/otrs,rudy500/otrs