Recent questions tagged MySQL

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mysql - Loading Markers from XML file to Google Map API

my goal is to be able to load markers from an sql database and display them on a googlemap. but im having ... but cant find anything that helps. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to handle foreign key while partitioning

I am working on fleet management. I am having large amount of writes on a location table with following columns ... there any alternate way... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to retrieve image from database in c#

an error shows saying that I have invalid parameters for this code... can anyone tell me whats wrong? Im supposed to ... } } conn.Close(); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Join two tables and extract the lowest price with multiple conditions (multiple sku)

I almost finished my system until I noticed that a product had a different sku with another supplier (I have ... .sku ORDER BY category, price See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - SQL query is not working on phpMyAdmin as I am getting an error

I have entered this code on phpMyAdmin as an SQL query. I am trying to create a table (this is a copy and ... AUTO_INCREMENT=2' at line 6 " See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - SQL JOIN two tables with AVG

I am trying to join two tables: songs id | song | artist ---|------|------- 1 | foo | bar 2 | fuu | bor 3 | ... -|------- 1 | foo | bar | 4.4 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Select All Events with Event->Schedule->Date between start and end dates in CakePHP

Trying to figure out how to build a query in CakePHP where I can select all Events that are between X and Y dates ( ... .id' )); return $data; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql, case sensitive compare through codeigniter

I wanted to write following query through codeigniter's db helper class, guide me plz SELECT * FROM table where ... column like '%binary abc%' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - InnoDB: Operating system error number 23 in a file operation

Yesterday, my local server HDD crashes and goes for automatic scandisk at start up. I was not in office so I ... Web Edition if that matters. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Why should not disable ONLY_FULL_GROUP_BY

During internet searching I see lot of questions now to disable ONLY_FULL_GROUP_BY feature, so it ... removing ONLY_FULL_GROUP_BY limitation? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Query a database with results from multiple tables?

There are some similar questions around but they aren't quite what I'm looking for, so forgive me if you ... start with that. Any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - PHP: mysql_connect not returning FALSE

I have a form where the user enters their database information and can click a link that uses AJAX to send ... Fabio below for the suggestion! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Get nearest records to specific date grouped by type

I'm sorry I can't be more specific, but I don't know how to describe my problem in the title.. respectively ... So how to form the MySQL query? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Drupal Database Structure - Efficient/Inefficient?

I'm certainly no Drupal expert, but I've schemed and built a few databases before, so am puzzled by ... structure peculiarity unique to Drupal? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Fastest random selection WHERE column X is Y (NULL)

Currently I am using: SELECT * FROM table AS t1 JOIN ( SELECT (RAND() * (SELECT MAX(id) FROM table where ... this case is InnoDB. Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to export a Base64 string to a file, on server side, without saving it in web server, directly by PHP?

I am using PHP and MySQL for my programming. I have stored some Base64 strings (which are encoded from files). ... .com/save.php?fileid=23413)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Taking a datetime field into primary key throws fatal error

I would like to use the combination of two foreign keys plus the datetime field as my combined primary key. But ... Can anyone help or advise? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How do I enforce uniqueness in a table?

For example, I have to program an enrolment table which has: enrolment_id academic_period results student_id subject I ... happen. Any help? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Get all Date of month along with data from table

I have two tables user_profile and tracked_search. The user_profile table has user details and tracked_search tracks ... am using MySQL. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Where clause for only one table in a left join

I have two tables, the first is 'actions' which has columns 'id' and 'actionname', the second is ' ... should I be going about this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - comparing date and time php

i need to compare two dates where if one date is greater than the other then an sql will run. this is my ... } but its not working. please help See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to select standard deviation within a row? (in SQL - or R :)

I wonder whether there is a way to select the standard deviation from several integer fields in MySQL within the ... do it directly in MySQL. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Using WHERE clause to find POI within a range of distance from Longitude and Latitude

I'm using following sql code to find out 'ALL' poi closest to the set coordinates, but I would want to ... @dist ORDER BY distance limit 10; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Group by month including empty months

I want to select all my order values per month. I know this works fine with GROUP BY month but only with months ... t show up. Is this possible? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql function to return a table

Is there any way so we can return a table from a mySQL function? Like we do on SQL SRV? ALTER FUNCTION [ ... which i need to convert to MySQL See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Java ODBC Data Source ( undefined symbol: SQLAllocEnv )

I have the following Java code. Purpose of this code is to establish a connection to a remote MySQL ... Details: case=nochange DSN=ProductionDb See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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988 views

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mysql - Select trims spaces from strings - is this a bug or in the spec?

in mysql: select 'a' = 'a '; return 1 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Want Row Number on Group of column in MY SQL?

I have one table in MYSQL It has data like Id Name 1 test 1 test 1 test123 2 test222 3 test333 I want the ... ? what should the script for same? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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