CreateQuery test_table (children 3)
 Identifier test_table
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration date (children 1)
    DataType Date
   ColumnDeclaration __sign (children 1)
    DataType Int8
   ColumnDeclaration from (children 1)
    DataType Float64
   ColumnDeclaration to (children 1)
    DataType Float64
 Storage definition (children 4)
  Function CollapsingMergeTree (children 1)
   ExpressionList (children 1)
    Identifier __sign
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier date
  Identifier date
  Set
