groovy array remove the brackets

Question

  def colarray=[]
                    def num
                    def newRole = rolecol.split(\',\')
                    def len = newRole.size()
                            


        

Answer 1

def colarray = rolecol.tokenize(',').collect { "col$it" }.join(', ')

Then you will also need to escape your sql:

sql.eachRow("select col01, ${Sql.expand(colarray)} from read_csv where col01 = ? and ${Sql.expand('col' + usercol)} != ? ", [file.name,""])

Answer 2

the [] are there, because you are doing an implicit toString on the list. use colarray.join(',')