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Merged
merged 2 commits into from
Nov 12, 2025
Merged

hotfix/genesis rollback fix #2021

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0816d46
hotfix/genesis rollback fix
Cmdv Nov 11, 2025
0a41025
ghg98 no partials fix
Cmdv Nov 11, 2025
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4 changes: 4 additions & 0 deletions cardano-chain-gen/test/Test/Cardano/Db/Mock/Unit/Conway/Rollback.hs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE NumericUnderscores #-}

#if __GLASGOW_HASKELL__ >= 908
{-# OPTIONS_GHC -Wno-x-partial #-}
#endif

module Test.Cardano.Db.Mock.Unit.Conway.Rollback (
simpleRollback,
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5 changes: 3 additions & 2 deletions cardano-db/src/Cardano/Db/Statement/Base.hs
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Expand Up @@ -192,12 +192,13 @@ queryBlockNoAndEpochStmt =
-- (where DrepDistr will be inserted). Using the previous block's epoch ensures
-- DrepDistr for the current epoch gets deleted, preventing duplicates
-- when replaying through the epoch boundary.
-- For genesis (block 0), there's no previous block, so use the current epoch.
sql =
TextEnc.encodeUtf8 $
Text.concat
[ "SELECT curr.id, prev.epoch_no"
[ "SELECT curr.id, COALESCE(prev.epoch_no, curr.epoch_no)"
, " FROM " <> tableName (Proxy @a) <> " curr"
, " JOIN " <> tableName (Proxy @a) <> " prev ON prev.block_no = $1 - 1"
, " LEFT JOIN " <> tableName (Proxy @a) <> " prev ON prev.block_no = $1 - 1"
, " WHERE curr.block_no = $1"
]

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