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Improve speed of HistoricAccountBalances triggers

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catbref 2019-11-26 08:58:52 +00:00
parent 9b894616ee
commit d9bafaa42c
1 changed files with 14 additions and 0 deletions
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14
src/main/java/org/qora/repository/hsqldb/HSQLDBDatabaseUpdates.java
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@ -862,6 +862,20 @@ public class HSQLDBDatabaseUpdates {
+ "ON DUPLICATE KEY UPDATE balance = new_row.balance"); + "ON DUPLICATE KEY UPDATE balance = new_row.balance");
break; break;
case 61:
// Rework triggers on AccountBalances as their block-height sub-queries are too slow
stmt.execute("DROP TRIGGER Historic_account_balance_insert_trigger");
stmt.execute("DROP TRIGGER Historic_account_balance_update_trigger");
stmt.execute("CREATE TRIGGER Historic_account_balance_insert_trigger AFTER INSERT ON AccountBalances REFERENCING NEW ROW AS new_row FOR EACH ROW "
+ "INSERT INTO HistoricAccountBalances VALUES "
+ "(new_row.account, new_row.asset_id, (SELECT IFNULL(height, 0) + 1 FROM (SELECT height FROM Blocks ORDER BY height DESC LIMIT 1) AS BlockHeights), new_row.balance) "
+ "ON DUPLICATE KEY UPDATE balance = new_row.balance");
stmt.execute("CREATE TRIGGER Historic_account_balance_update_trigger AFTER UPDATE ON AccountBalances REFERENCING NEW ROW AS new_row FOR EACH ROW "
+ "INSERT INTO HistoricAccountBalances VALUES "
+ "(new_row.account, new_row.asset_id, (SELECT IFNULL(height, 0) + 1 FROM (SELECT height FROM Blocks ORDER BY height DESC LIMIT 1) AS BlockHeights), new_row.balance) "
+ "ON DUPLICATE KEY UPDATE balance = new_row.balance");
break;
default: default:
// nothing to do // nothing to do
return false; return false;