CreateQuery testMT (children 3)
 Identifier testMT
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration uid (children 1)
    DataType String
   ColumnDeclaration version (children 1)
    DataType UInt32
   ColumnDeclaration is_deleted (children 1)
    DataType UInt8
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier uid
  Set
