package Ġsql builder . exceptions Ċ Ċ import Ġsql builder . Persistence Exception Ċ Ċ class ĠNot Null Column Exception ( val Ġcolumns : ĠList < String >) ĊĠĠĠ Ġ: ĠPersistence Exception (" column ( s ) Ġ${ columns . join ToString ( prefix Ġ= Ġ"[", Ġpostfix Ġ= Ġ"] ")} Ġare Ġnot Ġnullable , Ġyet Ġnot Ġincluded Ġin Ġyour Ġupdate / insert ")