CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration a (children 1)
    DataType Float32
   ColumnDeclaration b (children 1)
    DataType int
   ColumnDeclaration c (children 1)
    DataType String
   ColumnDeclaration d (children 1)
    DataType Float64
 Storage definition (children 4)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier b
    Identifier c
    Identifier d
  Function tuple (children 1)
   ExpressionList
  Set
