CreateQuery employees (children 2)
 Identifier employees
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration name (children 1)
    DataType String
   ColumnDeclaration department (children 1)
    DataType String
   ColumnDeclaration salary (children 1)
    DataType UInt64
