Add unusual slippage query (2332678)

cowprotocol/accounting/rewards/mainnet/.sqlfluff

@@ -3,4 +3,7 @@ cte_name = 'results'
 start_time='2024-08-20 00:00:00'
 end_time='2024-08-27 00:00:00'
 vouch_cte_name=valid_vouches,named_results
+min_absolute_slippage_tolerance=100
+relative_slippage_tolerance=0.3
+significant_slippage_value=1000
 time='2024-08-27 00:00:00'

cowprotocol/accounting/rewards/mainnet/unusual_slippage_query_2332678.sql

@@ -0,0 +1,29 @@
+-- Query that detects high slippage settlements
+-- Parameters:
+--  {{start_time}} - the start date timestamp for the accounting period  (inclusively)
+--  {{end_time}} - the end date timestamp for the accounting period (exclusively)
+-- {{min_absolute_slippage_tolerance}} -- the minimum absolute threshold above which a tx is may be flagged as high-slippage
+-- {{relative_slippage_tolerance}} -- the minimum relative threshold (wrt batch value) above which a tx may be flagged as high-slippage
+--  {{significant_slippage_value}} -- the absolute threshold above which a tx is always flagged as high-slippage
+with
+results_per_tx as (
+    select * from "query_3427730(start_time='{{start_time}}',end_time='{{end_time}}',cte_name='results_per_tx')"
+)
+
+select  --noqa: ST06
+    block_time,
+    concat(environment, '-', name) as solver_name,
+    concat('<a href="https://dune.com/queries/1955401?TxHash=', cast(rpt.tx_hash as varchar), '&sidebar=none" target="_blank">link</a>') as token_breakdown,
+    rpt.tx_hash,
+    usd_value,
+    batch_value,
+    100 * usd_value / batch_value as relative_slippage
+from results_per_tx as rpt
+inner join cow_protocol_ethereum.batches as b on rpt.tx_hash = b.tx_hash
+inner join cow_protocol_ethereum.solvers on address = rpt.solver_address
+where (
+    abs(usd_value) > {{min_absolute_slippage_tolerance}}
+    and
+    100.0 * abs(usd_value) / batch_value > {{relative_slippage_tolerance}}
+) or abs(usd_value) > {{significant_slippage_value}}
+order by relative_slippage