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MySQL case insensitive select
Can anyone tell me if a MySQL SELECT query is case sensitive or case insensitive by default? And if not, what query would I have to send so that I can do something like:
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
I've got two options for unicode that look promising for a mysql database.
2 Answers
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What does character set and collation mean exactly?
I can read the MySQL documentation and it's pretty clear. But, how does one decide which character set to use? On what data does collation have an effect?
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日期计算器与倒数日：日期选择框取前一天、日期加减、相差天数（附 .aia 源...
...的搜索：获取日期选择框选中日期的前一天、日期选择框如何使用、如何获取日期选择框选择的日期、时间选择框如何使用、获取当前时间、datepicker。
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图为由最终 .aia 生成的布局预览（数值为示例）...
MySQL, update multiple tables with one query
... this one query, of course. You can read more about joins here: http://dev.mysql.com/doc/refman/5.0/en/join.html. There's also a couple restrictions for ordering and limiting on multiple table updates you can read about here: http://dev.mysql.com/doc/refman/5.0/en/update.html (just ctrl+f "join").
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Bogus foreign key constraint fail
...Two possibilities:
There is a table within another schema ("database" in mysql terminology) which has a FK reference
The innodb internal data dictionary is out of sync with the mysql one.
You can see which table it was (one of them, anyway) by doing a "SHOW ENGINE INNODB STATUS" after the drop f...
领域驱动设计系列（三）:事件驱动上 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...里的事件源(Event Source), 这个以后再讲，今天主要讲一下如何用事件来解耦，主要的原因是...前言
今天讲一下事件驱动，这个不是领域驱动设计里的事件源(Event Source), 这个以后再讲，今天主要讲一下如何用事件来解耦，主要的...
Insert, on duplicate update in PostgreSQL?
...rom an answer on Stack Overflow how to perform multiple updates at once in MySQL using the following syntax:
16 Answers
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How can I append a string to an existing field in MySQL?
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You need to use the CONCAT() function in MySQL for string concatenation:
UPDATE categories SET code = CONCAT(code, '_standard') WHERE id = 1;
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How do I add indices to MySQL tables?
I've got a very large MySQL table with about 150,000 rows of data. Currently, when I try and run
7 Answers
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