CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 2)
  ExpressionList (children 4)
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration key (children 1)
    DataType String
   ColumnDeclaration value (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration sign (children 1)
    DataType Int8
  ExpressionList (children 1)
   Index (children 2)
    Identifier key
    Function text (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
 Storage definition (children 2)
  Function CollapsingMergeTree (children 1)
   ExpressionList (children 1)
    Identifier sign
  Identifier id