CreateQuery t (children 3)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration x (children 1)
    DataType UInt8
 Storage definition (children 2)
  Function ReplicatedMergeTree (children 1)
   ExpressionList (children 2)
    Literal \'/clickhouse/tables/{database}/test_comment_table3/t\'
    Literal \'1\'
  Function tuple (children 1)
   ExpressionList
