text: CREATE OR REPLACE VIEW bancornetwork.view_add_convertible_token
      AS WITH convertible_tokens
      AS (SELECT *FROM bancornetwork
              ."BancorConverterRegistry_v3_evt_ConvertibleTokenAdded" UNION ALL
                  SELECT *FROM bancornetwork
              ."BancorConverterRegistry_v4_evt_ConvertibleTokenAdded" UNION ALL
                  SELECT *FROM bancornetwork
              ."BancorConverterRegistry_v5_evt_ConvertibleTokenAdded" UNION ALL
                  SELECT *FROM bancornetwork
              ."BancorConverterRegistry_v6_evt_ConvertibleTokenAdded" UNION ALL
                  SELECT *FROM bancornetwork
              ."BancorConverterRegistry_v7_evt_ConvertibleTokenAdded") SELECT
      "_convertibleToken" AS convertible_token,
      symbol, decimals,
      "_smartToken" AS smart_token, s.contract_address, evt_tx_hash AS tx_hash,
      evt_block_time AS block_time FROM
      convertible_tokens s LEFT JOIN erc20.tokens t ON s."_convertibleToken"
      = t.contract_address;
  