我们正在使用下面的更新查询，它使行锁定超过3分钟。请找到以下查询详细信息。
update EmailReportSummary inner join EmailReports on EmailReportSummary.EMAIL_ID=EmailReports.EMAIL_ID set EmailReportSummary.OPENS_COUNT = IF(EmailReports.OPEN_COUNT = 0, EmailReportSummary.OPENS_COUNT+1,EmailReportSummary.OPENS_COUNT),EmailReports.OPENS=true,OPEN_COUNT = OPEN_COUNT+1,EmailReports.REPORT_MODIFIED_DATE=1532109134000 where EmailReports.EMAIL_REPORT_ID = 9823000147948239 and EmailReportSummary.CMP_CONTENT_ID = 9823000147491198
CREATE TABLE `EmailReportSummary` ( `SUMMARY_ID` bigint(19) NOT NULL DEFAULT '0', `EMAIL_ID` bigint(19) NOT NULL DEFAULT '0', `CMP_CONTENT_ID` bigint(19) NOT NULL DEFAULT '0', `OPENS_COUNT` int(10) DEFAULT '0', `CLICKS_COUNT` int(10) DEFAULT '0', `SCHEDULED_COUNT` int(10) DEFAULT '0', `SENT_COUNT` int(10) DEFAULT '0', `FORWARDS_COUNT` int(10) DEFAULT '0', `BOUNCE_COUNT` int(10) DEFAULT '0', `SPAM_COUNT` int(10) DEFAULT '0', `OPTOUT_COUNT` int(10) DEFAULT '0', `HARD_BOUNCE_COUNT` int(10) DEFAULT '0', `COMMENTS_COUNT` int(10) DEFAULT '0', `TRAP_COUNT` int(10) DEFAULT '0', `INVALID_DOMAIN_COUNT` int(10) DEFAULT '0', `BLOCKED_COUNT` int(10) DEFAULT '0', `IGNORED_COUNT` int(10) DEFAULT '0', `ARCHIVE_COUNT` int(10) DEFAULT '0', `REPLY_COUNT` int(10) DEFAULT '0', PRIMARY KEY (`SUMMARY_ID`), KEY `EmailReportSummary_FK1_IDX` (`EMAIL_ID`), KEY `EmailReportSummary_FK2_IDX` (`CMP_CONTENT_ID`), CONSTRAINT `EmailReportSummary_FK1` FOREIGN KEY (`EMAIL_ID`) REFERENCES `Email` (`EMAIL_ID`) ON DELETE CASCADE, CONSTRAINT `EmailReportSummary_FK2` FOREIGN KEY (`CMP_CONTENT_ID`) REFERENCES `EmailContentInfo` (`CMP_CONTENT_ID`) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=utf8
CREATE TABLE `EmailReports` ( `EMAIL_REPORT_ID` bigint(19) NOT NULL DEFAULT '0', `EMAIL_ID` bigint(19) NOT NULL DEFAULT '0', `SENT_DATE` bigint(19) DEFAULT NULL, `CONTACT_ID` bigint(19) NOT NULL DEFAULT '0', `REPORT_CREATED_DATE` bigint(19) NOT NULL DEFAULT '0', `REPORT_MODIFIED_DATE` bigint(19) DEFAULT NULL, `OPENS` tinyint(1) DEFAULT '0', `FORWARDS` tinyint(1) DEFAULT '0', `BOUNCE` int(10) DEFAULT '0', `BOUNCED_DATE` bigint(19) DEFAULT NULL, `SPAM` tinyint(1) DEFAULT '0', `OPT_OUT` tinyint(1) DEFAULT '0', `ZUID` bigint(19) NOT NULL DEFAULT '0', `UNIQUE_NO` varchar(100) DEFAULT NULL, `RECIPIENT_SELECTION_ID` bigint(19) DEFAULT NULL, `OPEN_COUNT` int(10) DEFAULT '0', `CLICK_COUNT` int(10) DEFAULT '0', `IGNORED` int(10) DEFAULT '0', `CMP_CONTENT_ID` bigint(19) DEFAULT NULL, `RESTRICT` int(10) DEFAULT '0', `TIME_ZONE` varchar(100) DEFAULT NULL, `GMT_DEVIATION` varchar(10) DEFAULT NULL, `CMP_COMMENTS_COUNT` int(10) DEFAULT '0', `IGNORED_BY_TRAP` int(10) DEFAULT '0', PRIMARY KEY (`EMAIL_REPORT_ID`), KEY `EmailReports_FK1_IDX` (`EMAIL_ID`), KEY `EmailReports_FK2_IDX` (`CONTACT_ID`), KEY `EmailReports_FK3_IDX` (`RECIPIENT_SELECTION_ID`), KEY `EmailReports_FK4_IDX` (`CMP_CONTENT_ID`), KEY `EmailReports_IDX1` (`SENT_DATE`), CONSTRAINT `EmailReports_FK1` FOREIGN KEY (`CAMPAIGN_EMAIL_ID`) REFERENCES `Email` (`EMAIL_ID`) ON DELETE CASCADE, CONSTRAINT `EmailReports_FK2` FOREIGN KEY (`CONTACT_ID`) REFERENCES `ContactInformation` (`CONTACT_ID`) ON DELETE CASCADE, CONSTRAINT `EmailReports_FK3` FOREIGN KEY (`RECIPIENT_SELECTION_ID`) REFERENCES `RecipientSelectionInfo` (`RECIPIENT_SELECTION_ID`) ON DELETE CASCADE, CONSTRAINT `EmailReports_FK4` FOREIGN KEY (`CMP_CONTENT_ID`) REFERENCES `EmailContentInfo` (`CMP_CONTENT_ID`) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=utf8
答案 0 :(得分：0)
简单的建议，请尽量不要使更新语句变得如此复杂。
也许它并不需要花费太多时间，但是可以想象一下，当100个请求尝试更新一个相同的记录时会发生什么，最后一个请求在所有其他请求完成之前不会获得行锁定。
更好的方法是使用代码逻辑来替换“更新内部联接”。