我正在排除一个错误,并试图排除所有可能的解释,以解释我为什么会目睹这种行为。我正在PHP中执行许多MySQL查询(通过CodeIgniter sActive Record类),并且我所看到的行为的一个解释是查询没有同步执行,即PHP没有等待查询完成后再发出下一个查询。
我一直在这样的假设下进行编码,即如果我<code>通过PHP将
我正在排除一个错误,并试图排除所有可能的解释,以解释我为什么会目睹这种行为。我正在PHP中执行许多MySQL查询(通过CodeIgniter sActive Record类),并且我所看到的行为的一个解释是查询没有同步执行,即PHP没有等待查询完成后再发出下一个查询。
我一直在这样的假设下进行编码,即如果我<code>通过PHP将
如果您在相同的服务器上选择它,并且正在使用同一会话/连接,并且您没有使用INSERT DELAYED
,那么它确实应该存在,但负载平衡的MySQL服务器/实现/缓存可能会将select
转移到其他服务器或数据位置。。。。
I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...
<?php $con=mysql_connect("localhost","mts","mts"); if(!con) { die( unable to connect . mysql_error()); } mysql_select_db("mts",$con); /* date_default_timezone_set ("Asia/Calcutta"); $date = ...
我把我的用心从使用QQL转向MySQL。 它与凯科特合作,现在不工作,因为我已经改变,使用MySQL。 这里的错误信息是:
We have a restaurant table that has lat-long data for each row. We need to write a query that performs a search to find all restaurants within the provided radius e.g. 1 mile, 5 miles etc. We have ...
Is it possible in php to return a specific row of data from a mysql query? None of the fetch statements that I ve found return a 2 dimensional array to access specific rows. I want to be able to ...
Our website was developed with a meta tag set to... <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> This works fine for M-dashes and special quotes, etc. However, I ...
What are some of the strategies being used for pagination of data sets that involve complex queries? count(*) takes ~1.5 sec so we don t want to hit the DB for every page view. Currently there are ~...
My table looks like person_id | car_id | miles ------------------------------ 1 | 1 | 100 1 | 2 | 200 2 | 3 | 1000 2 | 4 | 500 I need to ...