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bkpr: don't use a minus in a sql stmt

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Avoid rounding errors in sql by doing it in code.
This commit is contained in:
niftynei 2022-07-19 17:04:38 +09:30 • committed by Rusty Russell
parent a45da63280
commit 2b3ef37590
1 changed files with 9 additions and 2 deletions
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11
plugins/bkpr/recorder.c
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@ -223,7 +223,8 @@ struct fee_sum **calculate_onchain_fee_sums(const tal_t *ctx, struct db *db)
", of.account_id"
", a.name"
", of.currency"
", CAST(SUM(of.credit) AS BIGINT) - CAST(SUM(of.debit) AS BIGINT) as fees"
", CAST(SUM(of.credit) AS BIGINT) as credit"
", CAST(SUM(of.debit) AS BIGINT) as debit"
" FROM onchain_fees of"
" LEFT OUTER JOIN accounts a"
" ON of.account_id = a.id"
@ -238,6 +239,8 @@ struct fee_sum **calculate_onchain_fee_sums(const tal_t *ctx, struct db *db)
sums = tal_arr(ctx, struct fee_sum *, 0);
while (db_step(stmt)) {
struct fee_sum *sum;
struct amount_msat debit;
bool ok;
sum = tal(sums, struct fee_sum);
sum->txid = tal(sum, struct bitcoin_txid);
@ -246,8 +249,12 @@ struct fee_sum **calculate_onchain_fee_sums(const tal_t *ctx, struct db *db)
sum->acct_db_id = db_col_u64(stmt, "of.account_id");
sum->acct_name = db_col_strdup(sum, stmt, "a.name");
sum->currency = db_col_strdup(sum, stmt, "of.currency");
db_col_amount_msat(stmt, "fees", &sum->fees_paid);
db_col_amount_msat(stmt, "credit", &sum->fees_paid);
db_col_amount_msat(stmt, "debit", &debit);
ok = amount_msat_sub(&sum->fees_paid, sum->fees_paid,
debit);
assert(ok);
tal_arr_expand(&sums, sum);
}