Looking at the db-sync schema, I see the tx_out table has a data_hash column, but I can't make sense of why this column is not on the tx table instead. From the Alonzo CDDL, I can see the scripts are part of the transaction_witness_sets, which is part of the block, so I don't see how one could match a script data from a witness to an output in a transaction.

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According to CDDL, the transaction output itself has a data_hash: https://github.com/input-output-hk/cardano-ledger/blob/37322df14d44d1370e8a72b677815d64a92baa00/alonzo/test/cddl-files/alonzo.cddl#L73

PS: I can't believe I missed that...

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