Article Introduction：The problem that the laydate time component can only assign a value to the first input box when there are multiple time input boxes in Firefox browser

2016-08-20 comment 0  1750

Article Introduction：In a multi-table association query statement, placing a huge user ID array in in causes the query time to be too long. How to optimize it? 1. The query statement is as shown below, and the execution time is 147.4ms.

2016-12-05 comment 0  1523

Article Introduction：I wrote a relatively bad directory file listing program that supports multiple systems, can be sorted by time, and can enter multi-level directories. Please add other functions yourself. Please criticize and correct me more! ! ! 0){ while(list($key,$val)=each($p)){ echo ; echo $val; echo creation time: .@date(Y-m-j:H:i:s,$key).; } } unset($p); unset($cd); if($cf>0){ while(

2016-07-13 comment 0  927

Article Introduction：Below is a MySQL function that calculates the duration in years, months, days, hours, minutes and seconds between two dates. mysql>DROPFUNCTIONIFEXISTSDuration;QueryOK,0rowsaffected,1warning(0.00sec)mysql>DROPFUNCTIONIFEXISTSLabel123;QueryOK,0rowsaffected,1warning(0.00sec)mysql>DELIMITER//mysql>CREATEFUNCTIONDuration(dt

2023-09-10 comment 0  1054

Article Introduction：According to news on March 8, Apple recently released a blog post stating that in order to combat the leakage of European iPhones, Apple users will not be able to use third-party app stores if they are outside the EU for a "long period of time." Apple updated its blog today to quantify this "long time" and confirmed it to be 30 days. The translated official statement from Apple is as follows: Users can still open and use applications previously installed through third-party app stores when they leave the region of an EU member state. Within 30 days after users leave the EU region, they can continue to update these applications through the third-party application market, or they can continue to use the third-party application market to manage previously installed applications. However, users must be in the EU to install third-party app markets, as well as new apps from third-party app markets. apple

2024-03-08 comment 0  710

Article Introduction：​jQuery Date Range Picker is a jQuery date picker plug-in that allows users to select a date and time range. The entire date picker plug-in uses CSS to render styles, and it is very easy to customize the skin using CSS. And the browser compatibility is very good and supports multiple time formats.

2018-01-10 comment 0  2095

Article Introduction：thinkphp M method multi-table query is an efficient data processing method, which can help us process the relationship between multiple data tables at the same time. This article will introduce how to use this method to implement multi-table queries. 1. What is a multi-table query? In a database, sometimes we need to query the data relationships between multiple data tables, which requires the use of multi-table queries. In general, we can use multiple SELECT statements to implement multi-table queries, but this method will be very slow when processing large amounts of data, so we need to use a more efficient way to perform multi-table queries. two,

2023-04-07 comment 0  577

Article Introduction：Mysql method of querying records for a period of time: 1. Query records within N days, the code is [WHERE TO_DAYS(NOW()) - TO_DAYS (time field) <= N]; 2. Query today's records, the code is [where date(time) Field)=date(now())】.

2020-11-18 comment 0  4253

Article Introduction：There is no timer in jquery; you can use the "jQuery Timer" plug-in to implement a timer in jquery. The timer in this plug-in: 1. "everyTime(time interval, [calculator name], function name, [number limit], [wait for function program to complete])"; 2. "oneTime (time interval, [timing] "stopTime([timer name], [function name])"; 3. "stopTime([timer name], [function name])".

2022-06-09 comment 0  2093

Article Introduction：MySQL Query Days In database development, it is often necessary to query the difference between time and date, such as calculating the number of days, hours, minutes, etc. between two dates. MySQL provides some functions to implement this function, which can easily calculate the difference between time and date. 1. DATEDIFF function The DATEDIFF function returns the difference in days between two dates. The syntax is as follows: DATEDIFF(date1, date2) where date1 and date2 are two dates or date time values, and the function returns the difference between the two dates.

2023-05-23 comment 0  2674

Article Introduction：When using golang to develop web applications, you often encounter situations where you need to query data across tables. This article will introduce how to use golang to query data across tables. 1. Compound query statements In database queries, compound query statements can be used to query data across tables. Compound query statements can be implemented through joint queries and nested queries. In golang, you can use the Query and QueryRow functions in the sql package to implement compound query statements. The following is a sample code that uses compound query statements to query data across tables: `

2023-03-30 comment 0  739

Article Introduction：1. What is multi-table query? In the database, sometimes we need to query the data relationships between multiple data tables, which requires the use of multi-table query. In general, we can use multiple SELECT statements to implement multi-table queries, but this method will be very slow when processing large amounts of data, so we need to use a more efficient way to perform multi-table queries. 2. Implementation of multi-table query using thinkphpM method In thinkphp, we can use M method to implement multi-table query. The M method is an efficient ORM (Object Relational Mapping) method, which can help us encapsulate SQL statements to make data processing more convenient. 1. Basic usage: It is very simple to use the M method to perform multi-table queries.

2023-05-29 comment 0  1205

Article Introduction：Executing Multiple MySQL Queries Simultaneously in PHPExecuting multiple queries in a single attempt can enhance efficiency and optimize...

2024-12-17 comment 0  901

Article Introduction：In PHP, we sometimes need to query data in multiple database tables at the same time. In this case, we can use the JOIN operation, which allows us to perform join queries in multiple tables. In this article, we will introduce how to use JOIN operation in PHP to realize simultaneous query of multiple tables.

2023-03-24 comment 0  1467

Article Introduction：Today I finally have time to sort out and improve a jQuery plug-in I wrote before. This is a plug-in that simulates a "modal dialog box". The modal dialog box has three skins, red, green, and blue.

2016-05-16 comment 0  1081

Article Introduction：jquery.datepair is a lightweight jQuery plug-in that intelligently selects date and time ranges, inspired by Google Calendar. Datepair will keep start and end dates/times in sync and can set defaults based on user actions. The plugin does not provide any UI widgets; it is pre-configured to work with jquery-timepicker and Bootstrap DatePicker, but you can use it with any date picker or timepicker.

2016-11-02 comment 0  1585

Article Introduction：This time I bring you Vue to implement click time to obtain time period query (with code). What are the precautions for Vue to implement click time to obtain time period query. The following is a practical case, let's take a look.

2018-05-15 comment 0  3336

Article Introduction：: MySql Example description of the method of querying data by time period: The time format is 2008-06-16. Query the data of the current day: SELECT * FROM `table` WHERE date (time field) = curdate(); Query the fields of the current month: SELECT * FROM ` table` WHERE month(time field) = month(now()); The time format is 1219876... UNIX time, just use the "FROM_UNIXTIME()" function, for example, to query the current month

2016-07-29 comment 0  1097

Article Introduction：I have written an article before about star rating based on jquery. Today I have time to rewrite this function and present it as a jQuery plug-in for future use.

2016-05-16 comment 0  1700

Article Introduction：In Laravel, we often need to query based on multiple conditions. These conditions may include field values, time ranges, relationships, and more. In this article, we will discuss how to use Laravel Eloquent for multi-condition query. 1. Basic query When querying in Laravel, we can use basic query methods, such as `where`, `orWhere`, `whereIn`, `whereNotIn`, etc. These query methods can be chained to combine multiple query conditions

2023-05-20 comment 0  1226