CreateQuery lc_00906 (children 3)
 Identifier lc_00906
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration b (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
 Storage definition (children 3)
  Function MergeTree
  Identifier b
  Set