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Get Root Directory Path of a PHP project
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this is just awesome, I tried $_SERVER['DOCUMENT_ROOT'], dirname(), $_SERVER['SCRIPT_NAME'] etc. but this worked excellently!
– webblover
Nov 26 '14 at 16:40
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How do I check if an index exists on a table field in MySQL?
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Use SHOW INDEX like so:
SHOW INDEX FROM [tablename]
Docs: https://dev.mysql.com/doc/refman/5.0/en/show-index.html
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Run MySQLDump without Locking Tables
...ion, because it does not need to lock the tables at
all.
For innodb DB:
mysqldump --single-transaction=TRUE -u username -p DB
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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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The fastest MySQL solution, without inner queries and without GROUP BY:
SELECT m.* -- get the row that contains the max value
FROM topten m -- "m" from "max"
LEFT JOIN topten b -- "b" from "...
HAproxy - Web负载均衡解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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stats auth admin:password
# 设置统计页面认证的用户和密码，如果要设置多个，另起一行写入即可
stats hide-version
# 隐藏统计页面上的haproxy版本信息
frontend http_80_in # 定义一个名为http_80_in的前端部分
bind 0.0.0.0:80
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Add a prefix to all Flask routes
... container (anything that speaks WSGI will do) and to set your APPLICATION_ROOT config value to your prefix:
app.config["APPLICATION_ROOT"] = "/abc/123"
@app.route("/")
def index():
return "The URL for this page is {}".format(url_for("index"))
# Will return "The URL for this page is /abc/123/...
PHP 错误记录和聚合的平台Sentry实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...和聚合的平台Sentry实战不管你用什么编程语言，都会面临如何处理错误日志的问题。很多程序员对错误日志放任自流，直到出现故障了才追悔莫及，如果问我怎么办，我会...不管你用什么编程语言，都会面临如何处理错误日志的...
How to prepend a string to a column value in MySQL?
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Many string update functions in MySQL seems to be working like this:
If one argument is null, then concatenation or other functions return null too.
So, to update a field with null value, first set it to a non-null value, such as ''
For example:
update ta...
Is there a naming convention for MySQL?
...e your standard, then run with it.
To answer your question outright - no, MySQL doesn't have a preferred naming convention/standard, so rolling your own is fine (and yours seems logical).
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How can I get the SQL of a PreparedStatement?
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This also depends on the implementation. In MySQL -- at least the version I was using a few years ago -- the JDBC driver actually built a conventional SQL query from the template and bind variables. I guess that version of MySQL didn't support prepared statements nativ...