Asksearch_php.cn

Community Learn Tools Library Leisure

English

Popular searches：
PHP
MySQL
jquery
HTML
CSS

"Sum(if) grouping in MySQL"

I have the following table which is not loading: Payment Date, User Id, MonthlyAmount_last30d User ID and Payment Date are from the table. In the monthlyAmount_last30d field I want to see the amount for the period (payment date - 30 days). I can't figure out how to group these columns correctly to g...

P粉026665919 2023-09-11 13:16:22

android - problem of reusing image list after grouping

Find similar pictures, group similar pictures into groups, and put all groups into a list. How to solve the reuse problem of hundreds of pictures? The main reason is that the number of each group is not fixed.

迷茫 2017-05-24 11:38:06

Group by group, calculate the sum of occurrences of each group, and print the data as a formatted string

I want to group and sum the data of some rows based on the values of two columns. My input is: $array=[['FA',12.9],['FA',12.9],['FB',12.2],['FC',12.3],['FA',12.9],[ 'FB',12.9],['FA',12.4],];I want to print the grouped row values as a string, followed by an x and the total number of occurrences...

P粉970736384 2023-09-05 22:43:27

Best way to group array of objects

What is the most efficient way to group objects in an array? For example, given this array of objects: [{Phase:"Phase1",Step:"Step1",Task:"Task1",Value:"5"},{Phase:"Phase1",Step:"Step1",Task: "Task2",V

P粉348915572 2023-10-09 22:39:14

java - Whether users from different regions are divided into tables and groups in the database

For example, for takeout products, in order to facilitate the allocation of user orders to deliverymen, users in the same area will be grouped in the database. If they are grouped, there will be many areas and many groups.

PHP中文网 2017-05-24 11:33:15

How to avoid grouping on specific columns

You can have data within appointments, and you can have multiple ranges of data per appointment point, when correlating data. I want to select the last record of the date point to get the latest snapshot of the date point. Additional code embedded to force grouped loop collections and

P粉667649253 2023-07-25 14:08:22

javascript - How to use Lodash/Js to group by object fields

json object {code...} got the following results. . Grouping based on cityAreaList field: firstLetter {code...}

曾经蜡笔没有小新 2017-05-19 10:45:12

Select rows grouped by date

I want to select the headers (and ID-s) from a table grouped by date but like below. The cell on the left is the ID, the cell on the right is the title, the middle cell is the date, select ID, title, date in date order from the news group BY date DESC;

P粉729436537 2023-09-12 13:45:48

Laravel: filter and group based on created_at and sum costs

Based on the table below I want to get all the records on the created_at column grouped by month and sum the cost month for each record. Hope I can explain it.

P粉314915922 2023-09-10 00:05:56

Asking for advice on a mysql table grouping index problem

I'm working on a website program, and the general requirements are as follows. Users are divided into five levels: 1-5. The higher the number, the higher the authority. I have a bunch of content, the higher the level the more content is visible to the user. For example, there is content: A, B, C, D,...

迷茫 2017-06-28 09:22:55

How to improve grouping speed

I have a large table with over 3B rows and my query now takes 3 days to execute. This is my query: insertintofrequencywords(word,frequency,filename)selectword,count(*)asfrequency,max(filename)fromallwordstempgroupbyword Basically my query is to group by word from allwordstemp table and I want to kno...

P粉155832941 2023-09-05 10:24:40

Grab the first n records in each grouped result

The following is the simplest possible example, but any solution should be able to scale to the required n top results: Given a table like the following with columns Person, Group and Age, how do I get the 2 oldest people in each group ? (Ties within a group should not produce more results, but inst...

P粉785957729 2023-08-21 19:55:22

What is the latest QQ group number?

What is the latest QQ group number? What is the latest QQ group number? What is the latest QQ group number?

rockgo 2019-05-06 15:26:54

Get the maximum value record in each grouped SQL result

How to get the row containing the maximum value for each grouping? I've seen a few overly complicated variations, but none of them gave a good answer. I tried the simplest example: given the table below, with the columns Person, Group, and Age, how do I get the oldest person in each group? (A tie wi...

P粉186904731 2023-08-20 18:10:21

Group 2D array data using column values to generate 3D array

I have a multidimensional array that I want to group based on the values in a specific column. I want to group based on level, but I don't know the value of level in advance. So, I can't say while$i<7 like in the for loop because I don't know that 7 is the maximum value for the level key, and e...

P粉022140576 2023-08-22 18:37:00

Group MySQL results by ID for looping over

I have a table with flight data in mysql. I'm writing a php code that will group and display data using codeigniter3 journey_idair_idFlightDurationout_or_inflightduration21120hr5minoutbound12052120hr5minoutbound13003117hr55mininbound22584117hr55mininbound10

P粉638343995 2024-04-06 17:27:56

The most efficient way to group object arrays

What is the most efficient way to group objects in an array? For example, given the following array of objects: [{Phase:"Phase1",Step:"Step1",Task:"Task1",Value:"5"},{Phase:"Phase1",Step:"Step1",Task: "Task2",Valu

P粉310754094 2023-08-21 14:34:06

What should I do if the route in the laravel group wants to access the controller outside the group?

What should I do if the route in the laravel group wants to access the controller outside the group? For example, the following route: {code...} The route of SettingsController in the group is intended to access the outside SettingsController. How should I write it?

漂亮男人 2017-05-16 16:46:35

MYSQL group by last value but conditionally

I will explain my situation. MySQL5.7 I have 2 tables: registry and mobile. Both tables have IDMovement in common so I can join them My problem: I need to group by Registry column (which is a varchar column) and I need to check for MAXIDMovement. In this row, there is another column named IDCausal. ...

P粉037450467 2023-09-14 15:37:56

How to group MySQL rows using a combination of non-null values

How to merge/combine rows by selecting the latest non-null value of each column in the grouped result? id user fruit number creation time 1 Jane apple empty 2022-01-012 John watermelon 322022-01-023 John empty 722022-01-034 John pear empty 2022-01-04 The following method does not work: SELECTuser,CO...

P粉002023326 2023-09-06 21:35:03