CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 9)
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration col_string (children 1)
    DataType String
   ColumnDeclaration col_fixedstring (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_32
   ColumnDeclaration col_lowcardinality_string (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration col_lowcardinality_fixedstring (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType FixedString (children 1)
       ExpressionList (children 1)
        Literal UInt64_32
   ColumnDeclaration col_nullable_string (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration col_nullable_fixedstring (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType FixedString (children 1)
       ExpressionList (children 1)
        Literal UInt64_32
   ColumnDeclaration col_lowcardinality_nullable_string (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType Nullable (children 1)
       ExpressionList (children 1)
        DataType String
   ColumnDeclaration col_lowcardinality_nullable_fixedstring (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType Nullable (children 1)
       ExpressionList (children 1)
        DataType FixedString (children 1)
         ExpressionList (children 1)
          Literal UInt64_32
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier col_string
