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mysql - 海量的地理位置(經(jīng)緯度)數(shù)據(jù)，用什么數(shù)據(jù)庫(kù)來(lái)存儲(chǔ)最好？

數(shù)據(jù)條數(shù)在億級(jí)別。 更新頻繁。MySQL無(wú)法動(dòng)態(tài)索引。 查詢要比建過(guò)索引的MySQL的between and 語(yǔ)句快。 最好原生支持空間范圍查找。

From [MySQLdiscussion group] 2017-04-17 12:59:58 0  3  1018

PHP developer tool mysql does not start

The first installation started normally. When configuring the TP5 file, I accidentally decompressed it to the ...

From [MySQLdiscussion group] 2017-08-09 13:40:33 0  1  1017

java - mysql single table pipeline 500W data multi-dimensional statistics solution

There is a flow table structure in the project as follows: id sdkVersion jarVersion countryCode imei createTim...

From [MySQLdiscussion group] 2017-05-19 10:07:03 0  4  1017

mysql - 微信小程序如何提高查詢速度？

現(xiàn)在小程序炒的火熱，公司選擇小程序開發(fā)。環(huán)境:騰訊云服務(wù)器系統(tǒng):centos6.5應(yīng)用服務(wù)器:tomcat7數(shù)據(jù)庫(kù):云mysql問題:每次進(jìn)去小程序，需要觸發(fā)servlet邏輯，從mysql取數(shù)，這樣導(dǎo)致反應(yīng)速度很慢。求...

From [MySQLdiscussion group] 2017-04-17 16:33:42 0  1  1017

這條聯(lián)合sql語(yǔ)句哪里錯(cuò)了？

((( SELECT a.log_id,`create_date`,`content`,`creator`,`belong_to_user`,a.customer_code,`follow_up_wa...

From [MySQLdiscussion group] 2017-03-06 10:14:24 0  2  1016

New title: New script does not correctly display strange character encoding of stored data

I'm trying to rewrite an old website. It is in Persian and uses Persian/Arabic characters. CREATEDATABASE`db`D...

From [MySQLdiscussion group] 2023-11-17 10:51:01 0  2  1016

單點(diǎn)失效 - mysql cluster 使用問題

請(qǐng)問對(duì)于以上配置，使用數(shù)據(jù)庫(kù)連接時(shí)：mysqli_connect("ip","user","password","db")，應(yīng)該填寫哪個(gè)ip...

From [MySQLdiscussion group] 2017-04-17 14:41:26 0  1  1016

如何使用mysql workbench建立數(shù)據(jù)庫(kù)

準(zhǔn)備使用flask搭建一個(gè)后端，計(jì)劃采用mysql作為數(shù)據(jù)庫(kù)?？戳私坛?，需要在flask里連接數(shù)據(jù)庫(kù)。我安裝了 mysql workbench，不知道怎么使用。想知道，在mysql workbench中什么是建立一個(gè)新連...

From [MySQLdiscussion group] 2017-04-17 14:37:43 0  3  1016

mysql time format problem

The data type is datetime, why are there so many 000000 at the end? How to deal with it? The default added tim...

From [MySQLdiscussion group] 2017-06-30 09:53:35 0  5  1015

mysql - What is the reason for sql error?

I found a SQL injection vulnerability based on orderBy in an old system that is under maintenance. I am going ...

From [MySQLdiscussion group] 2017-05-18 10:47:26 0  1  1015

sql的普通索引和復(fù)合索引的問題

假如我在字段A中創(chuàng)建普通單索引，然后又在字段A創(chuàng)建復(fù)合索引，但是A不是復(fù)合索引的初始列，現(xiàn)在我只用字段A作為查詢條件進(jìn)行查詢，請(qǐng)問會(huì)用到索引么，還是全表查詢

From [MySQLdiscussion group] 2017-03-08 09:48:34 0  1  1015

centos環(huán)境，mysql可以用非root（普通用戶）安裝么？

centos6.8i386，mysql5.7.17，看mysql的文檔好像只有使用root權(quán)限安裝。 可是這樣不是不符合安全原則么？還是說(shuō)所謂安全，只要是非root用戶啟動(dòng)就好，安裝的話是root還是非root都無(wú)所謂？...

From [MySQLdiscussion group] 2017-04-17 16:34:44 0  3  1012

Branch versions and derivative versions of mysql

MariaDB is like a shadow version of MySQL. MariaDB is a branch version of MySQL, not a derivative version (fol...

From [MySQLdiscussion group] 2017-05-18 10:53:12 0  1  1011

mysql的標(biāo)簽（tag）是如何儲(chǔ)存的？

請(qǐng)看這個(gè)頁(yè)面：https://.com/tags可以看到，標(biāo)簽被分類了。是否可以根據(jù)這個(gè)頁(yè)面，認(rèn)定一定有tag_categorys表？還是沒有tag_category，只是在前端渲染的時(shí)候用了一堆堆的if？或者這個(gè)頁(yè).....

From [MySQLdiscussion group] 2017-04-17 14:46:34 0  3  1011

Retrieve MySql rows with the same column value

Let us consider the following table - IDScore19521003884100573 I am a complete SQL noob, but how to return a s...

From [MySQLdiscussion group] 2023-11-10 21:53:39 0  2  1010