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1Panel 给Flarum 安装redis
不要用插件GB Redis Setup ：composer require glowingblue/redis-setup，而用blomstra/flarum-redis并修改extend.php即可。 1Panel应用商店安装redis 安装扩展： composer require blomstra/flarum-redis 修改extend.php，文件管理器补齐return[]，host和password修改为前面安装的redis容器名及密码： ...
Oracle Cloud 安装1Panel
用ubuntu20.04，Ubuntu 20.04 Images参见： https://docs.oracle.com/en-us/iaas/images/ubuntu-2004/index.htm 开放所有端口,并关闭Iptable规则： iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT iptables -F apt-get purge netfilter-persistent reboot
sql server全库字段查询
有时忘记某个字段在数据库中的哪个表里了，可以利用syscolumns来进行查找。 select object_name(id) objName,Name as colName from syscolumns where (name like'%模糊被查找字段%') and id in(select id from sysobjects where xtype='u') order by objname;
sql连接INNER JOIN ON查询
INNER JOIN 关键字在表中存在至少一个匹配时返回行。如果表中没有匹配，则不会列出这些行。 SELECT a.AAA,b.BBB,c.CCC,d.DDD,a.MT,a.AAB,a.AAC,a.AAD,f.FFF FROM tableA AS a INNER JOIN tableB AS b ON b.B_AAA = a.AAA INNER JOIN tableC AS c ON c.CCD = a.AAD INNER JOIN tableD AS d ON d.DDE = a.AAE INNER JOIN tableE AS e ON e.EEF = a.AAF INNER JOIN tableF AS f ON f.FFG = e.EEG WHERE a.AAA IN (XXX,YYY,ZZZ);
Java HSSFCell.CELL_TYPE_ 更新为CellType.
错误原因：jar包版本更新，官方改动； 解决方法： 导入CellType包import org.apache.poi.ss.usermodel.CellType 使用CellType.STRING代替HSSFCell.CELL_TYPE_STRING if(cell==null||cell. Equals(null)||cell.getCellType()==CellType.BLANK){ value="null"; }else { //判断数据类型 switch (cell.getCellType()) { case FORMULA:value = "" + cell.getCellFormula(); break; case NUMERIC:value = "" + cell.getNumericCellValue(); break; case STRING:value = cell.getStringCellValue(); break; default: break; } } if(cell==null||cell.equals("")||cell.getCellType()==HSSFCell.CELL_TYPE_BLANK){ value="null"; }else { //判断数据类型 switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_FORMULA:value = "" + cell.getCellFormula(); break; case HSSFCell.CELL_TYPE_NUMERIC:value = "" + cell.getNumericCellValue(); break; case HSSFCell.CELL_TYPE_STRING:value = cell.getStringCellValue(); break; default: break; } }