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How to extract strings that do not meet the conditions in php

As shown in the picture: After the code in the picture is executed, the type of $result must be false. Because $a is not greater than $b. The current requirement is that the value of $string is an expression filled in by the user (the format is irregular), and then I will determine whether the resul...

echo 2020-10-26 15:16:45

mysql cascade query

table A :suittable B :suit_goods Related conditions: suit.suit_id = suit_goods.suit_id Corresponding relationship: A => Multiple B SQL select How to achieve the above result? ? ? Please enlighten me. Result: When a record is associated with the suit_goods table, first this record is retained....

某草草 2017-06-22 11:54:37

mysql - How to implement a DAO in JAVA to query the result sets of two entity classes at the same time

How to implement a DAO in JAVA to query the result sets of two entity classes at the same time 1. The picture is as follows: Union all query of two tables, now only one entity set result can be returned, and the entity set of the other table is filtered. How to achieve this? Returns both entity sets...

阿神 2017-05-18 10:45:21

How to make borders for columns in table?

I need to make a table like shown in the screenshot: What results I got: Problem: I can't make a green border like in the screenshot of the "Registered" column. Question: If it is a table, how to make this border? I tried overriding it on the div but nothing worked my style.container{table...

P粉176151589 2024-01-16 19:25:40

Regarding the data display problem obtained by fastadmin association model

Table A associates with table B and obtains the data of table B. Now I want to output the multiple names obtained in table B as "1,2,3" as shown in the figure. Get multiple "patient_name" of table B through the fields of table A , how should I change the code so that the result o...

小包子 2023-10-07 03:11:05

Why does the order change after mysql uses group_concat?

Since the fields in the two tables contain a one-to-many relationship, the group_concat function was used to splice multiple pieces of data when constructing the view to reduce the amount of data. However, after splicing, it was found that the original order had changed. For example: original data: ...

天蓬老师 2017-05-18 10:49:30

How to group and count in MySQL?

I'm trying to write a query that extracts the total number of undeleted messages sent to friends. Here is a screenshot of the table structure: The output I want to achieve is as follows: idmessages_count--------------------------1456227255This is what I have so far Query tried so far: SELECTu.id,cou...

P粉478835592 2024-04-06 18:30:17

python - How to add multiple database support in flask and display the query results on the page in a table?

As shown in the picture, what I want to achieve is the effect as shown above. Select different databases through the web interface, enter the query SQL in the middle input field, and click Execute to display the query results in a table below. If there is an error, , the original error message is di...

为情所困 2017-06-30 09:55:24

There is an ambiguous where clause for column 'status'

cursor.execute("SELECT*FROM`xplt_cases`LEFTJOIN`dgn_cases`ONdgn_cases.rid=xplt_cases.ridWHERE`status`=%(checker)s",{'checker':status}) I am new to MySQL and I am trying to combine two tables are joined together to get the results, but I get an error message: Column status in where clause i...

P粉127901279 2024-02-25 17:41:22

I'm trying to learn JavaScript and trying to calculate the average of sulfur and carbon in user input text

Please refer to the HTML table below to understand the question. I've created a table and I've numbered my text boxes for clarity. I'm trying to calculate the average of text input 1 (% sulfur) and text input 2 (% sulfur) and display the result in a read-only text input 5 (average sulfur). This is f...

P粉323374878 2023-09-03 14:05:56

How to right-align images in HTML tables

I've made a Django website and want to display my results like a little form at the top. There is a table on the left and I want to add two pictures and another column to the table on the right. I have designed a diagram to explain better - enter image description here Now I have written the code fo...

P粉555696738 2023-09-02 09:04:11

Design a database table structure that meets the following business requirements?

I was stumped by the last question in today's interview: (original picture) Design a database table structure that meets the following business needs: 1. A certain merchant holds a lottery for playing games for a period of time. Only users who play the game with 50 points or more can win the lottery...

phpcn_u36412 2018-03-14 23:00:16

Pass form with multiple ids and select to PHP using AJAX

I'm trying to collect selected checkboxes, update or delete them and pass this form to php via ajax. I'm very new to this and have spent a few days trying to figure out a way. Web research didn't give me any results, I tried sending ajax a few different ways - no results. Although using only PHP, I ...

P粉729198207 2024-02-26 14:17:13

Baidu search shows abnormal results. Please give me some advice. Thank you.

First of all, let me introduce that our company's website address is: www.comany.cn. Two months ago, the website was hacked by a lottery company. After the malicious Trojan was cleared, the Baidu search results page displayed like this: I tried changing the characters The set was changed from "...

Tony Chang 2018-06-05 13:27:53

python3 failed to insert data into mongodb (check Mongovue, there is no data in the database), but no error was reported when the program ran.

The code is as follows: {Code...} After the execution is completed, check Mongovue and the displayed result is as shown below: The collection is empty. Is this what is the reason? But when you use another third-party management tool to view it, you can see the created tables and data: So is the prob...

伊谢尔伦 2017-07-03 11:41:06

Load Firestore data in components before rendering with Vuefire

I'm trying to populate a people table with names and profile pictures. The name is derived from the Firestore database, and the image uses this name to find related images in the Firebase bucket. I've been watching hours of videos and have gone through almost a hundred articles, so my example code c...

P粉790187507 2023-08-29 15:05:47

Place Gantt chart elements with the same field value on one row

I can't buy anything please take a look at the picture I have attached below Gantt Chart and I already have all the values showing the chart and even the result is like this as shown in the second picture: My Gantt Chart However, This is not what I want to get. This is what I mean: look at the sec...

P粉930448030 2024-02-21 17:14:01

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactNam...

P粉237125700 2023-09-05 14:46:42

flex css - clip element after certain height instead of wrapping

The borders represent static height and width. I want item 5 and 6 to stay on the second row and cut off item 3 and 6 instead of wrapping a third time as shown. How can I achieve this with Flex? To complement this problem, the width of the container (displayed with a border) can be resized by user a...

P粉785957729 2024-04-01 14:02:02

Using tags to force direct layout in VEGA

I'm trying to create a network diagram in VEGA using a force-directed layout that displays labels for each node. A possible approach is mentioned in this question. By referring to the Vega editor, we can observe that the labels are present, but there are some overlapping and visual clutter issues. S...

P粉882357979 2024-02-26 18:46:59