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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
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DECIMAL is the MySQL data-type for exact arithmetic. Unlike FLOAT its precision is fixed for any size of number, so by using it instead of FLOAT you might avoid precision errors when doing some calculations. If you were just storing and ret...
Discuz! X3 论坛标题字数突破80的限制 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... _forum_rsscache, _forum_thread 这三张表）：
下面详细介绍如何修改：
一、数据库修改，修改数据库标题字段的长度为255字符：运行下面的sql语句：
（注意修改你的表的前缀，还有修改前一定要备份！！！）
ALTER TABLE `pre_forum...
Does MySQL foreign_key_checks affect the entire database?
When I execute this command in MySQL:
6 Answers
6
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MySQL Great Circle Distance (Haversine formula)
...script that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code:
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Convert JS date time to MySQL datetime
Does anyone know how to convert JS dateTime to MySQL datetime? Also is there a way to add a specific number of minutes to JS datetime and then pass it to MySQL datetime?
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Include all existing fields and add new fields to document
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You can use $$ROOT to references the root document. Keep all fields of this document in a field and try to get it after that (depending on your client system: Java, C++, ...)
[
{
$project: {
custom_field: "$obj.ob...
How to get all columns' names for all the tables in MySQL?
Is there a fast way of getting all column names from all tables in MySQL , without having to list all the tables?
10 Answe...
AWS MySQL RDS vs AWS DynamoDB [closed]
I've been using MySQL for a fair while now and I'm comfortable with its structure & SQL Queries etc.
4 Answers
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Cannot use identity column key generation with ( TABLE_PER_CLASS )
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Is this issue is with MySql only or its regular as I watch one of a video for Table per class approach and it was working fine in that postgres was used
– Prashant
Jan 22 '14 at 5:47
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SQL (MySQL) vs NoSQL (CouchDB) [closed]
...then things like a lot of their messages, comments etc. I have always used MySQL before but now I am minded to try something new like couchdb or similar which is not SQL.
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