mysql - Looking for a solution to count the number of new contracts

Scenario login users can view the number of new contracts in a certain time period at any time Department membership {code...} Contract table {code...} Calculation rules {code...} Option 1 The database is mysql, because the number of superior contracts , is the sum of the number of contracts of all ...

巴扎黑 2017-05-02 09:26:05 0  5  779

Is the course reservation system suitable for mongodb scenarios?

There is a project for user course reservation. Because the backend has node to do it, mongodb is a good choice. However, because the course reservation system has transaction operations of course reservation information after the user successfully makes a reservation or cancels the reservation, I M...

巴扎黑 2017-05-02 09:25:40 0  1  730

How to set up phpstorm's smart prompt?

How to set up phpstorm's smart prompt?

归宿 2019-10-16 15:33:09 0  0  1179

Is it possible to integrate a REDIS function?

Can a REDIS function be integrated?

phpcn_u79096 2017-12-20 13:26:20 0  2  849

MySQL constrains unique index only if another column is empty

I'm trying to rewrite the Postgres schema to fit the MySQL (8.0.32) dialect. As you know, MySQL does not support partial indexes. In the following case, there will be an index that enforces unique data on customer_group.name only if deleted_at is null. This makes sense since there is no point in ens...

P粉930448030 2024-01-16 15:42:42 0  2  474

Does Git merge have to merge branches? Can I merge two commits?

Does the git merge merge operation require merging the tip of branch? Can any two commits be merged? For example, there is branch hotfix and branch master, and the structure is as follows: {code...} init---->D +--->E +--->F+---->G master question. ..

学习ing 2017-06-17 09:15:31 0  2  1329

Error: Response too large | Chainlink function

I'm trying to execute a ChainlinkFunctions request from a smart contract deployed on PolygonMumbaiTestnet. This is the contract I deployed => To get the function source code here, please call zixinToSourceCode with a parameter value of 4. My Chainlink function call happens when I call the claimZi...

P粉170438285 2023-09-04 15:16:30 0  1  636

Grammar - In Python, can the break and continue statements only be used with if?

In Python, can the break and continue statements only be used with if? The picture below is from Liao Xuefeng’s website

我想大声告诉你 2017-05-18 10:58:06 0  2  1665

mongodb - mongo假设一个集合里有 10 个文档，多个 update 操作能不能 并发在这个集合上，比如操作不同的文档？

最新的mongo3.2支持行级锁吗？如果支持，是什么样的呢？200多万数据一个集合，并发性能怎么样？

漂亮男人 2017-05-02 09:22:39 0  2  832

There are two Git repositories, the old and the new, can they be merged?

For example: Warehouse A: From version 1.0 -> 1.1 -> 2.0 Warehouse B: From version 2.0 -> 2.1 -> 2.2 Can warehouse A and B be merged to form 1.0 -> 1.1 -> A complete single repository for 2.0 -> 2.1 -> 2.2?

伊谢尔伦 2017-05-02 09:28:29 0  3  594

mongodb - Mogodb uses text index, can't it use compound index?

Is it true that if a text index is used, a composite index cannot be used? Because I used the following query statement but only did text indexing: {code...} Checked through explain, he did text indexing. Then filter out other conditions from this index! So what should I do to fully...

PHP中文网 2017-05-24 11:31:30 0  1  840

PHP meeting reservation function

A calendar list similar to the one shown above when submitting a message

清风乱烟雨 2018-11-04 17:30:52 0  0  970

git pull如果不能自动合并，能否不把新代码和旧代码同时显示在一个文件夹？

上图是pull下来的时候有两个文件不能自动合并。 这两个文件都加上了下面这种东西 {代码...} 如果这种少的还好，如果十几处都有，有时候眼睛不好少看了一处，那不是麻烦了。 请问在这种情况下，能不能就别改我本地...

PHPz 2017-05-02 09:18:35 0  1  532

Can the length of the key be set for the sortset ordered collection in Redis?

I want to achieve the effect of ranking the top 100 in real time. When the number of places reaches 100, the 101st data will be automatically sorted when added to the sortset collection, but the 101st one after sorting needs to be deleted by coding. Does sortset have the function of limiting the key...

phpcn_u1582 2017-05-16 13:18:20 0  1  861

Why does my contact form work in Brave but not in other browsers?

My form works in Brave on my computer, but not in Safari or Google on my computer. It also doesn't work on mobile devices. If it doesn't work, it returns a POST409 error. This is my html code. <divclass="row"><divclass="col-md-12col-sm-12"id="result"></

P粉360266095 2024-02-21 18:28:10 0  1  427