I am querying the Covalent database in order to get information about rUSDT token Transfer transactions on RSK. The token address on the RSK blockchain is as below:
0xEf213441a85DF4d7acBdAe0Cf78004E1e486BB96
The transfer event log's hash is as below:
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
Here is my query as below:
SELECT
t.signed_at, t.fees_paid
FROM chain_rsk_mainnet.block_log_events e
INNER JOIN chain_rsk_mainnet.block_transactions t ON
e.block_id = t.block_id
AND e.tx_offset = t.tx_offset
WHERE
e.topics @> array[E'\\xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'::bytea]
AND e.topics[1] = E'\\xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
AND e.sender = E'\\xEf213441a85DF4d7acBdAe0Cf78004E1e486BB96'
ORDER BY t.signed_at DESC
LIMIT 1000
I am expecting to get the transaction gas fees for the latest 1000 transfer events, but for some reason I never get a response for this query. Can someone tell me what can be the problem here?
You should not order by time field because t.signed_at is not an indexed field whereas e.block_id and e.tx_offset are. Order by both of them.
Replace this statement
ORDER BY t.signed_at DESC
with this one
ORDER BY e.block_id DESC, e.tx_offset DESC
so that the the final query is as follows
SELECT
t.signed_at, t.fees_paid
FROM chain_rsk_mainnet.block_log_events e
INNER JOIN chain_rsk_mainnet.block_transactions t ON
e.block_id = t.block_id
AND e.tx_offset = t.tx_offset
WHERE
e.topics @> array[E'\\xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'::bytea]
AND e.topics[1] = E'\\xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
AND e.sender = E'\\xEf213441a85DF4d7acBdAe0Cf78004E1e486BB96'
ORDER BY e.block_id DESC, e.tx_offset DESC
LIMIT 1000