36 #注意''是空字符串,不是null 37 SELECT name,post_comment FROM employee WHERE post_comment=''; 38 ps: 39 执行 40 update employee set post_comment='' where id=2; 41 再用上条查看,就会有结果了 42 #5:关键字IN集合查询 43 mysql> SELECT name,salary FROM employee WHERE salary=3000 OR s...
更新 qfluentwidgets 以让关闭消息框后不再报错 [PyQt-Fluent-Widgets#867](zhiyiYo/Py… … 743e904 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Assignees No one assigned Labels bug Projects None yet Milestone No milestone De...
Andretwu opened this issue Nov 27, 2019· 1 comment CommentsAndretwu commented Nov 27, 2019 • edited 编译环境 操作系统 Windows 7/8/10 TeX 发行版 CTeX10.0 描述问题 \begin{figure}中,编译之后caption一直报错 2. 主要问题是caption{}这一行有三个报错信息 a. undefined control sequence b. ...
这地方img,服务器给的数据是一个Array,我返回的是String,就是这个斜体的地方,我以前是String,人家返回的是一个数组,我却用String接收,当然要报错了,我还一直钉在那行代码看,真是无语啊,弄了一天半,郁闷啊,遇到问题,一定要解决,不要总想着逃过去,我之前也是想那么做,可是他会一直跟着你,菜鸟,继续走吧,我们一...
) ENGINE=InnoDBCHARACTERSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='秒杀优惠券表,与优惠券是一对一关系'ROW_FORMAT=Compact; 原因: begin_time列分配DEFAULT '0000-00-00 00:00:00'(零时间戳),这不满足sql_mode中的NO_ZERO_DATE而报错。
This is in a COM Excel AddIn. Note: this is a more detailed rewrite (after Absinthe's first comment) - with the level of detail I should have started with. Let's say I have a chart that has 3 line ser... Photo duplicating when i choose photo from library ...
你好，请问报错什么呢？
" Khumalo said at the time.Molise denied the CIDB had made any undertaking to start the investigation before the end of July "precisely because of our understanding of the preparation work prior to commencement of the investigation".The CIDB failed to respond to requests for further comment on ...
操作步骤 执行 CREATE DATABASE 语句创建数据库。CREATE DATABASE test_db;在 test_db 数据库中创建表 test_table,语句如下。USE test_db;CREATE TABLE test_table(k1 TINYINT,k2 DECIMAL(10,2)DEFAULT"10.05",k3 CHAR(10)COMMENT"string ... MySQL兼容性 表维护语句 ANALYZE TABLE Y CHECK TABLE Y CHE...
commentstyle=\color{gray}, %注释颜色 frame=shadowbox %用方框框住代码块 frame=single, escapeinside=`` % 代码包含中文,把想插入的代码中的中文部分用 ` ` 括起来 } 更多预设的调整,可参考: 如果想调整代码框的大小的话,可以康康这里: \begin{minipage}{0.99\linewidth} ...