CreateQuery lc_perm (children 3)
 Identifier lc_perm
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration val (children 1)
    DataType UInt32
   ColumnDeclaration str (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
 Storage definition (children 2)
  Function MergeTree
  Identifier val