Avoid xid error from age() function when run on Hot Standby
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@ -93,7 +93,10 @@ Datum
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xid_age(PG_FUNCTION_ARGS)
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{
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TransactionId xid = PG_GETARG_TRANSACTIONID(0);
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TransactionId now = GetTopTransactionId();
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TransactionId now = GetTopTransactionIdIfAny();
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if (!TransactionIdIsValid(now))
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now = ReadNewTransactionId();
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/* Permanent XIDs are always infinitely old */
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if (!TransactionIdIsNormal(xid))
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