Improve Your Knowledge By Learning SQL Multiple JOINs - Vertabelo Academy Online Interactive Course

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Wed Jan 11 2023 03:03:24 GMT+0000 (Coordinated Universal Time)

Saved by @vnmshenoy #undefined

really good eg of how to find records that weren't sold in a particular period

really good eg of how to find records that weren't sold in a particular period

https://learnsql.com/course/joins/multiple-joins/multiple-joins-exercises/exercise-7

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SQL

@vnmshenoy

SQL Basics - SQL online course | LearnSQL.com SQL Basics - SQL online course | LearnSQL.com SQL Basics - SQL online course | LearnSQL.com select year from date interesting having clause eg order by the summed value groupby full query SQLLearn All/Any operator-really interesting SQL Basics - SQL online course | LearnSQL.com Find Out How To Use Filtering In SQL JOINs - Vertabelo Academy Online Interactive Course Improve Your Knowledge By Learning SQL Multiple JOINs - Vertabelo Academy Online Interactive Course Learn How To Use SQL JOINs To Self JOIN Tables - Vertabelo Academy Online Interactive Course Improve Your Skills By Learning Non-Equi Self JOIN - Vertabelo Academy Online Interactive Course Learn How To Use Non-Equi SQL JOINs -We also don't have to use the equality operator when joining tables. We are free to use other comparison operators (<, >, <=, >=, !=, <>) or the BETWEEN operator: use of MOD(patient.id, 2) = 1 . if you need to find odd id's instead of say using in (1,3,5,7,....) use Mod what i liked about this is that the answer provided had used "AND" between joins as well Multiple Filtered SQL JOIN - Vertabelo Academy Online Interactive Course Multiple Non-Equi JOINs Practice - self join table pe join on non-equi join and not primary key concatenation operator || (doesnt work on all DBs) Inbuilt SQL functions

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#include <iostream>
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常用的 rclone 命令

rclone config - 以控制会话的形式添加rclone的配置，配置保存在.rclone.conf文件中。
rclone copy - 将文件从源复制到目的地址，跳过已复制完成的。
rclone sync - 将源数据同步到目的地址，只更新目的地址的数据。
rclone move - 将源数据移动到目的地址。
rclone delete - 删除指定路径下的文件内容。
rclone purge - 清空指定路径下所有文件数据。
rclone mkdir - 创建一个新目录。
rclone rmdir - 删除空目录。
rclone check - 检查源和目的地址数据是否匹配。
rclone ls - 列出指定路径下所有的文件以及文件大小和路径。
rclone lsd - 列出指定路径下所有的目录/容器/桶。
rclone lsl - 列出指定路径下所有文件以及修改时间、文件大小和路径。
rclone md5sum - 为指定路径下的所有文件产生一个md5sum文件。
rclone sha1sum - 为指定路径下的所有文件产生一个sha1sum文件。
rclone size - 获取指定路径下，文件内容的总大小。.
rclone version - 查看当前版本。
rclone cleanup - 清空remote。
rclone dedupe - 交互式查找重复文件，进行删除/重命名操作。
 
rclone move Gdrive1:/Private Gdrive2:/Private
or
rclone copy Gdrive1:/SFW Gdrive2:/SFW
or
rclone sync Gdrive1:/NSFW Gdrive2:/NSFW	
 

rclone copy        复制
rclone move        移动，如果要在移动后删除空源目录，加上 --delete-empty-src-dirs 参数
rclone sync        同步：将源目录同步到目标目录，只更改目标目录
rclone size        查看网盘文件占用大小
rclone delete        删除路径下的文件内容
rclone purge        删除路径及其所有文件内容
rclone mkdir        创建目录
rclone rmdir        删除目录
rclone rmdirs        删除指定环境下的空目录。如果加上 --leave-root 参数，则不会删除根目录
rclone check        检查源和目的地址数据是否匹配
rclone ls        列出指定路径下的所有的文件以及文件大小和路径
rclone lsl        比上面多一个显示上传时间
rclone lsd        列出指定路径下的目录
rclone lsf        列出指定路径下的目录和文件

# 复制到网盘，并显示实时传输进度，设置并行上传数为8
 
rclone copy -P /home/SunPma GD:/home/SunPma --transfers=8
 
# 如果需要服务端对服务端的传输可加以下参数（不消耗本地流量）
 
rclone copy 配置名称:网盘路径 配置名称:网盘路径 --drive-server-side-across-configs

rclone 有 4 个级别的日志记录，ERROR，NOTICE，INFO 和 DEBUG。默认情况下，rclone 将生成 ERROR 和 NOTICE 级别消息。

-q - rclone将仅生成 ERROR 消息。
-v - rclone将生成 ERROR，NOTICE 和 INFO 消息，推荐此项。
-vv - rclone 将生成 ERROR，NOTICE，INFO和 DEBUG 消息。
--log-level LEVEL - 标志控制日志级别。

return 2 objects from function typescript Code Example

//function that returns multiple values

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var topTwoColors=getTopTwoColors();

var firstValue=topTwoColors[0]; //get first return value

var secondValue=topTwoColors[1]; //get second return value

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