大约有 7,000 项符合查询结果(耗时:0.0276秒) [XML]

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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)

... It depends. See the MySQL Performance Blog post on this subject: To SQL_CALC_FOUND_ROWS or not to SQL_CALC_FOUND_ROWS? Just a quick summary: Peter says that it depends on your indexes and other factors. Many of the comments to the post seem to...
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How to do a batch insert in MySQL

... From the MySQL manual INSERT statements that use VALUES syntax can insert multiple rows. To do this, include multiple lists of column values, each enclosed within parentheses and separated by commas. Example: INSERT IN...
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How do you list all triggers in a MySQL database?

What is the command to list all triggers in a MySQL database? 4 Answers 4 ...
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MySQL: Invalid use of group function

I am using MySQL. Here is my schema: 2 Answers 2 ...
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How to select records from last 24 hours using SQL?

... In MySQL: SELECT * FROM mytable WHERE record_date >= NOW() - INTERVAL 1 DAY In SQL Server: SELECT * FROM mytable WHERE record_date >= DATEADD(day, -1, GETDATE()) In Oracle: SELECT * FROM mytable WHER...
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How to change the default charset of a MySQL table?

There is a MySQL table which has this definition taken from SQLYog Enterprise : 5 Answers ...
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MySQL: Can't create table (errno: 150)

... From the MySQL - FOREIGN KEY Constraints Documentation: If you re-create a table that was dropped, it must have a definition that conforms to the foreign key constraints referencing it. It must have the correct column names and ty...
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NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术

...wide Assembler)汇编编译工具 3.1 为什么使用NASM? 3.2 如何安装NASM? 4. Linux汇编介绍 4.1 DOS和Linux汇编主要不同的地方 4.2 一个汇编程序的组成 4.3 linux系统调用 4.3.1 阅读参考手册 4.4 “Hello World!”汇编...
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Troubleshooting “Illegal mix of collations” error in mysql

...g the below error when trying to do a select through a stored procedure in MySQL. 16 Answers ...
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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). share | i...