How to optimize tp6 query

When the tp6 model is associated with multiple data tables for query, the query will be very slow. How can I optimize it? Is there any optimization method? Help! ! ! ! !

以后会怎样 2023-11-17 08:50:36 0  0  712

php - mysql query optimization problem?

{Code...} How to optimize this query? The premise is that the index cannot be created, because there are already several indexes in this table, which may cause the table to be locked.

大家讲道理 2017-05-16 13:08:33 0  2  543

How to optimize query reduction?

Just wanted to ask! The red dots above request the back-end to directly query the database conditions and return the result! Now the database can be processed quickly if there is little data, but once the amount of data is large, the returned results will become slower. How to optimize the backend? ...

我想大声告诉你 2017-06-06 09:52:20 0  1  800

Please tell me how to operate the related table query?

The teacher taught single table query or simple query in class, but related query was not mentioned. How should I do it?

东东 2021-04-28 09:01:36 0  2  1013

How to optimize a SQL query with over 2 million rows

I have a Sql database with over 2 million rows and it is growing rapidly. There aren't many columns, just code, price, date, and stationID. The purpose is to get the latest price by code and stationID. The query works great but takes over 10 seconds. Is there any way to optimize the query? $statemen...

P粉127901279 2023-09-01 18:09:31 0  2  599

PHP operates mongodb to query two tables

The official commands can be queried, but who knows the actual PHP operation?

Sinker 2018-07-31 15:14:20 0  1  1168

How to query and display data in Symfony2 layout.html.twig?

If there are public parts in layout.html.twig such as the sidebar that need to be queried and displayed, what is the best way to do it?

过去多啦不再A梦 2017-05-16 16:46:16 0  2  645

mongodb - mongo聚合查询使用$out输出，执行的是替换操作而不是append操作

mongo聚合查询遇到的一个问题 当前对mongo数据库的一张表做一些聚合查询的操作，考虑到数据量太大，从数据库查寻出来结果还是需要插入到数据库，故决定，将查询结果插入到一个临时的集合中，使用mongo的$out操作...

PHPz 2017-05-02 09:18:44 0  1  842

node.js - When node operates mysql, why do some query strings use backticks `` and some use double quotes ""

When using node to operate mysql, why do some query strings use backticks `` and some use double quotes ""? What is the significance of this? I hope the doubts can be answered {code...}

曾经蜡笔没有小新 2017-05-31 10:39:18 0  2  665

c# - mysql query optimization?

1. There are more than 1 million pieces of data. The count speed is very slow. Please let me know how to optimize it. 2. Code: {code...} 3. Index user table

怪我咯 2017-05-18 10:51:56 0  5  772

sql optimization or

How to optimize sql query select id from user where phone=’131′ or phone=’139′

Alone. 2018-06-13 12:35:53 0  1  1224

[vim operation] How to quickly select a word and query it in the current window when developing a program?

I don't mean to select words with the mouse and then query {code...} this way, but I want to use shortcut keys to quickly complete this operation. Step1 end By the way, how to quickly copy the current word? Don't use the "v" and then slowly cross your way through it. Instead, I want to qui...

为情所困 2017-05-16 16:42:35 0  4  737

mysql optimization - How to optimize mysql count(id) query speed?

The table structure is shown in the figure. The current data volume is 8000W rows. Are there any optimization methods and ideas?

某草草 2017-05-18 10:51:05 0  7  978

mysql - Query to modify the database optimization problem

I have a table with hundreds of thousands of data. Every time an event is triggered, all tables will be queried. If the conditions are met (most of them will be met), a certain field of the table data will be modified (the modified data will be different for each one). ) Please tell me how to do it ...

漂亮男人 2017-05-18 10:46:43 0  2  723

javascript - Two jQuery operations trigger the same function, how to optimize the writing?

{Code...} For example, if you click a button or press Enter in the input box to perform the same operation, can it be optimized into the following type of code: {Code...}

phpcn_u1582 2017-05-19 10:34:29 0  1  445

javascript - Jquery button binds ajax query event, how to optimize?

For example, limit the number of queries, limit the query interval, cache query results, etc. I have no experience in the specific method, so please give me some advice.

PHPz 2017-05-16 12:58:36 0  4  402

Why MySQL slows down without specifying an index

I'm trying to optimize a SQL query but I'd like to know how to do it correctly. SELECTr0_.*FROMrider0_useindex(ride_booking_id_IDX)LEFTJOINbookingb1_ONr0_.booking_id=b1_.idLEFTJOINspots2_ONr0_.from_spot_id=s2_.idLEFTJOINspots3_ONr0_.to_spot_id=s3_.idWH

P粉787806024 2023-09-08 00:38:24 0  1  606

mongodb有哪些技巧可替代ORM的关联表查询

在尽量减少查询数据库次数的情况下，mongodb有哪些查询操作或表结构设计的技巧可替代ORM的关联表查询，不使用DBRef。

天蓬老师 2017-04-24 15:59:42 0  1  675

How to GROUP BY multiple columns with multiple HAVING values ​​in MySQL?

I'm trying to create a mysql query to view the table where search queries are stored. This query attempts to get all rows that match the following criteria: >= to a date Return only rows where the search query appears 3 or more times Also only return rows where 2 or more users have used the searc...

P粉775723722 2024-02-26 12:04:45 0  1  473

数据库 - mongo使用$in查询结果的排序问题。

最近的项目使用mongo作为数据库，遇到了一个问题。 {代码...} 使用这样的查询的时候，查询的结果是按照自然排序的，即： {代码...} 不是在传值的时候的{d,c,b,a}；我的猜测是，$in的操作是按照自然排序遍历数据，...

天蓬老师 2017-05-02 09:18:43 0  1  755