CreateQuery t_00284_lc_str (children 3)
 Identifier t_00284_lc_str
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration s (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList
  Set