CreateQuery src (children 3)
 Identifier src
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration A (children 1)
    DataType Int64
   ColumnDeclaration B (children 1)
    DataType String
   ColumnDeclaration C (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Identifier A
  Set
