no query unable to fetch row 文心快码BaiduComate 针对“no query unable to fetch row”错误,这个错误通常出现在使用Qt框架进行数据库操作时,尤其是在使用QSqlQuery类时。以下是一些可能导致此错误的常见原因及其解决方案: 1. SQL查询语句错误 问题描述:SQL查询语句可能存在语法错误,或者字段名与数据库中的不一致...
QSqlQuery query; query.prepare("select * from XXX"); if(!query.exec()) qDebug() << query.lastError().text(); else returnquery; } 但是有一天,突然同样的代码转到另一个工程后,发现会提示“QSqlError("", "Unable to fetch row", "No query")”。 问题原因: 我的理解是可能是没有指定联接...
To: interest@qt-project.org Subject: [Interest] SQLite: mystic bug: No query Unable to fetch row error Hello, Each instance of our app is supposed to have an unique id (UUID). At every start, it check if it has assigned one, and if not - generates it and saves it to the SQLite ...
Hello, I tried use your repository. It's very helpful but I can't get query request result. I tried many query but always it give same error. QSqlError("", "Unable to fetch row", "No query") Please Could you check.Thanks. Not: I tried qu...
QT数据库开发Unable to fetch row错误和No query错误 (wisestudy.cn) http://www.wisestudy.cn/opentech/Unable_to_fetch_row.html 有一次出事是因为单引号多了一个,在SQL语句里字符数值要用单引号包含,如果多了个单引号,数据库解析语句就会失败,就不会执行查询,返回行集。
QT数据库开发Unable to fetch row错误和No query错误 有一次出事是因为单引号多了一个,在SQL语句里字符数值要用单引号包含,如果多了个单引号,数据库解析语句就会失败,就不会执行查询,返回行集。 另外一次报错,看着SQL语句一点儿问题都没有啊,放客户端里执行也没报错,当时就几乎放弃了,后来查了查字段名,发现设计...
QT数据库开发Unable to fetch row错误和No query错误 有一次出事是因为单引号多了一个,在SQL语句里字符数值要用单引号包含,如果多了个单引号,数据库解析语句就会失败,就不会执行查询,返回行集。 另外一次报错,看着SQL语句一点儿问题都没有啊,放客户端里执行也没报错,当时就几乎放弃了,后来查了查字段名,发现设计...
KillQueryNotificationSubscriptionStatement KillStatement KillStatsJobStatement LabelStatement LedgerOption LedgerTableOption LedgerViewOption LeftFunctionCall LikePredicate LineNoStatement ListenerIPEndpointProtocolOption ListTypeCopyOption Literal LiteralAtomicBlockOption LiteralAuditTargetOption ...
Unexpected PortalSiteMapProvider was unable to fetch current node, request URL: /example/path/here/custom/pages/opportunitydetails.aspx, message: No item exists at http://SERVER/example/path/here/custom/pages/opportunitydetails.a...
Unexpected PortalSiteMapProvider was unable to fetch current node, request URL: /example/path/here/custom/pages/opportunitydetails.aspx, message: No item exists at http://SERVER/example/path/here/custom/pages/opportunitydetails.as...