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統(tǒng)計(jì) - MYSQL版本問(wèn)題導(dǎo)致SQL語(yǔ)法錯(cuò)誤！unknow column 'SQLSTR'

SQLSTR是別名，在MySQL5.7以上版本能通過(guò)，在5.0上提示unknow column ‘SQLSTR’錯(cuò)誤，我不知道應(yīng)該怎么修改（因?yàn)榭蛻絷P(guān)系不能通過(guò)mysql版本）,請(qǐng)各位大神指點(diǎn)！ {代碼...}

From [MySQLdiscussion group] 2017-04-17 16:30:54 0  1  772

redis - MySQL存儲(chǔ)訪問(wèn)量，關(guān)注數(shù)等更新比較頻繁的數(shù)據(jù)的時(shí)候，如何減輕數(shù)據(jù)庫(kù)負(fù)擔(dān)？

目前我的想法是把訪問(wèn)量，關(guān)注數(shù)等先存到ssdb中(使用ssdb的incr操作)，當(dāng)訪問(wèn)數(shù)量%100 == 0 的時(shí)候，再將數(shù)據(jù)存儲(chǔ)到數(shù)據(jù)庫(kù)中。大家有什么經(jīng)驗(yàn)可以共享嗎？--------------更新----------...

From [MySQLdiscussion group] 2017-04-17 14:21:14 0  4  771

mysql - 一個(gè)擁有多個(gè)子站的網(wǎng)站數(shù)據(jù)庫(kù)怎么設(shè)計(jì)好？

該網(wǎng)站主要以新聞、咨詢?yōu)橹鳌?該網(wǎng)站無(wú)主站，子站通過(guò)二級(jí)域名訪問(wèn),子站之間相對(duì)獨(dú)立， 基本不調(diào)用其它站的數(shù)據(jù)。 數(shù)據(jù)量較大，但基本是文章咨詢類數(shù)據(jù)。 對(duì)實(shí)時(shí)性要求不是很高 基于mysql數(shù)據(jù)庫(kù) 數(shù)據(jù)庫(kù)該怎么設(shè)...

From [MySQLdiscussion group] 2017-04-17 11:32:54 0  3  771

Add highest value as a column using window function

I have a table like this: Query to copy data: DROPTABLEIFEXISTSunits_table;CREATETEMPTABLEunits_table(Brandvar...

From [MySQLdiscussion group] 2024-04-04 12:18:16 0  2  770

How can I create a SQL query that uses Col A as the primary sort key, but if Col A is empty, uses Col B as the primary sort key?

Using MariaDB, I have a view that provides information including the date of the event and whether the invitat...

From [MySQLdiscussion group] 2023-09-15 22:59:52 0  1  770

How to use PHP's password_hash function for password hashing and verification

Lately I've been trying to implement my own security on a login script I found on the internet. While trying t...

From [MySQLdiscussion group] 2023-08-21 18:37:28 0  2  770

gfw - cross-border synchronization mysql problem, big headache

The problem is this. Our website is bilingual and serves domestic and foreign users at the same time, so we ha...

From [MySQLdiscussion group] 2017-05-18 10:46:41 0  2  770

mysql - sql 分組查詢問(wèn)題。。

表1 表2 查詢語(yǔ)句和結(jié)果 結(jié)果只顯示3條數(shù)據(jù)，我要顯示product表的所有數(shù)據(jù)，怎么回事？

From [MySQLdiscussion group] 2017-04-17 15:07:04 0  2  770

MySQL - Simple query sometimes suffers from infinite loop and increasing number of rows_fetched

I've been trying to figure out for the past 4 weeks why queries are executing intermittently forever on Docker...

From [MySQLdiscussion group] 2023-09-08 09:20:56 0  1  769

Spring batch job not starting in development environment

I'm using springspring-boot-starter-batch2.7.9 with mysqlDB as the data source. I have a strange problem, the ...

From [MySQLdiscussion group] 2023-09-06 10:01:50 0  1  768

mysql - MylSAM與 InnoDB的主要區(qū)別？在業(yè)務(wù)中大家如何選擇的

MylSAM與 InnoDB的主要區(qū)別？在業(yè)務(wù)中大家如何選擇的

From [MySQLdiscussion group] 2017-04-17 11:40:11 0  3  768

Looking for help with MySQL query - Calculate timestamp count within grouped range

One would think this would be easy, but it was a grind all night long. I have a sensor alert log and would lik...

From [MySQLdiscussion group] 2024-02-04 11:20:54 0  1  767

Does MariaDB Connector 3.0.7 support Aurora MYSQL?

According to this article https://mariadb.com/kb/en/mariadb-connector-j-303-release-notes/Mariadb removed supp...

From [MySQLdiscussion group] 2024-03-27 20:18:48 0  1  766

MySQL: Syntax error caused by using reserved words as table or column names

I'm trying to execute a simple MySQL query like this: INSERTINTOuser_details(username,location,key)VALUES('Tim...

From [MySQLdiscussion group] 2023-10-14 20:35:57 0  1  766

mysql ER_BAD_DB_ERROR: Unknown database 'test'

Start Logger @ server.js debug: #### Module Status Check Hook is initialized @1 #### debug: #### Network Check...

From [MySQLdiscussion group] 2017-04-17 14:51:58 0  2  766