Tag: count()
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Post Views: 83 1. Reference:Optimization of List Interface Response Timeout 2. Reference:In Spatie\QueryBuilder, query SQL enforces index 3. However, when the fields in where contain shipping_at_gmt, Shipping_status, operator_user_id, after forcing the combined index is a negative optimization. SQL execution time-consuming sorting is as follows 4. Preliminarily summarize the rules, when the fields in where contain Shipping_at_gmt and Shipping_Status|Shipping_Type|Operated_Source When the…
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Post Views: 19 1. Reference:In MySQL 8.0, when querying the total number of table records, the analysis optimization of the timeout. The execution time in Navicat is: 3.075 seconds. as shown in Figure 1 2. The execution time in Laravel 9 is: 60317.74ms. It is equivalent to 60 seconds. as shown in Figure 2 3. Verify another count(*) SQL, the…
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Post Views: 18 1. Reference: In mysql 8.0, when the total number of table records is checked, the analysis and optimization of the timeout is optimized. Add WHERE ID > 0 when a COUNT SQL does not exist where condition exists. 2. Reference:How to check if table is already has a where Clause in Laravel Query Builder? The final implementation…
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Post Views: 28 1. An interface request response timeout, because count(*) SQL takes 54 seconds. The amount of data in the table exceeds 10 million. as shown in Figure 1 2. The table field Shipping_Type has an index to add, and its value is only 1 and 2 possibilities. Decide to add the where condition Shipping_Type in (1,2). The query…
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Post Views: 21 1. Error: count(): parameter must be an array or an object that implements countable (view: ). as shown in Figure 1 2. Check the code implementation 3. Print $user->address_book, its value is null 4. Adjust the code implementation, when $user->address_book is null, the expression $user->address_book ??[]equivalent to[], otherwise it is $user->address_book. 5. In PHP 7.2.0, when the…
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Post Views: 12 1. In Yii 2.0, the active record of Redis (Active Record) is based on the view structure, which is inconsistent with the order of the model fields. as shown in Figure 1 2. Check the Redis activity record class, /common/models/redis/douyinwebappUserAccessToken.php 3. Print the model object of redis (before the update), $redisdouyinWebAppUserAccessToken. 4. Print the model object of…
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Post Views: 19 1. Check the search model file: /common/logics/weiboWeiBoConnectWebAppUsersarch.php. 7. Edit method entry file: /weibo/rests/weibo_weibo_connect_web_app_user/indexaction.php. Implement the search and sorting of the channel_app_task_count. The inclusion of channel_app_task_count is prerequisite for the channel_app_task field status of 6. 2. View the method entry file: /weibo/rests/weibo_weibo_connect_web_app_user/indexaction.php.
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Post Views: 16 1. At 2017-06-18 19:36:00, that is, when the game starts, the response time of the application is 51.8ms, and the response time is normal, as shown in Figure 1 2. During the entire football game, the response time is increasing linearly, at 2017-06-18 20:30:00 to 2017-06-18 At 20:40:00, the response time decreased because the game was in…