CreateQuery a (children 3)
 Identifier a
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration x (children 1)
    DataType String
   ColumnDeclaration y (children 2)
    DataType String
    Literal \'str\'
 Storage definition (children 2)
  Function ReplicatedMergeTree (children 1)
   ExpressionList (children 2)
    Literal \'/clickhouse/{database}/a\'
    Literal \'r1\'
  Identifier x
