CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 2)
  ExpressionList (children 1)
   ColumnDeclaration str (children 1)
    DataType String
  ExpressionList (children 1)
   Index (children 2)
    Identifier str
    Function text (children 1)
     ExpressionList
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList