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How do I get a raw, compiled SQL query from a SQLAlchemy expression?
...o %s or other variables waiting to be bound by the statement compiler or MySQLdb dialect engine, etc).
12 Answers
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Master-master vs master-slave database architecture?
...uture. I came across
Master-Slave Replication
Master-Master Replication
MySQL Cluster
I have decided to settle for using MySQL Cluster for my use case. However please see below for the various pros and cons that I have compiled
1. Master-Slave Replication
Pros
Analytic applications can rea...
How do I pass JavaScript variables to PHP?
... <?php
$query = "SELECT * FROM salarie";
$result = mysql_query($query);
if ($result) :
?>
<select id="salarieids" name="salarieid">
<?php
while ($row = mysql_fetch_assoc($result)) {
echo '<option val...
Using LIMIT within GROUP BY to get N results per group?
... behavior of both quirks is not guaranteed. Revised answer as follows.
In MySQL 5.x you can use poor man's rank over partition to achieve desired result. Just outer join the table with itself and for each row, count the number of rows lesser than it. In the above case, lesser row is the one with hi...
创业第一年 太特么累了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...贴吗？”，“公司有高温费吧？”。。。。。。；在考虑如何回答这些我都没想过的问题时，忽然感觉心里有一万只草泥马在奔腾，这货是故意来玩我的吧？再这么聊下去，估计我钱包里仅有的两百块钱也保不住，他留下还不祸...
Sync data between Android App and webserver [closed]
...logic for database like: How to sync SQLite database on Android phone with MySQL database on server?
Best Luck to all new learner. :)
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SQL query to group by day
... (from Q8-Coder):
GROUP BY dateadd(DAY,0, datediff(day,0, created))
For MySQL:
GROUP BY year(datefield), month(datefield), day(datefield)
or better (from Jon Bright):
GROUP BY date(datefield)
For Oracle:
GROUP BY to_char(datefield, 'yyyy-mm-dd')
or faster (from IronGoofy):
GROUP BY trun...
如果携程决心战略性亏损到底，去哪儿怕是只剩一条路可走 - 资讯 - 清泛网 -...
...会入市，而这可能造成携程股价的波动，而对管理层而言如何平稳的过渡获得更高的评级保持股价的稳定增长在一定程度上也是一个挑战。今年2月9日，携程原第一大股东，美国知名老牌共同基金奥本海默基金清空了其持有的所...
Update a column value, replacing part of a string
I have a table with the following columns in a MySQL database
6 Answers
6
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Reason for Column is invalid in the select list because it is not contained in either an aggregate f
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@davidblaine, MySQL has a function GROUP_CONCAT() for that. dev.mysql.com/doc/refman/5.5/en/… But in standard SQL, each column should contain only one value. That's fundamental to relational theory too.
– Bill Kar...