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Does MySQL mixed utf8 utf8mb4 have any advantages over pure utf8mb4?

There are too many tables, only nicknames and comments are set to utf8mb4, config, tag, router, etc. do not use utf8mb4 at all. Will the mixture of utf8 and utf8mb4 still have an impact on search, indexing and log records? Is this way faster than pure utf8mb4? Is it stable? Does mysqld configuration...

巴扎黑 2017-06-22 11:54:49

Ask the master about the problem of converting UTF8 encoding from MYSQL GBK

Requirements: a remote table userinfo_remote, database encoding gbk, proofreading set gbk_chinese_ci, fields (uid, username, password, email,... others) where the username unique index needs to fetch certain fields (uid, username, password) from the remote table ), and then write it into the local t...

实力单身典范 2019-07-16 17:59:56

txt uses utf8 to store numbers, and java reads txt numbers with spaces in front of them.

excel ---> txt txt ---> utf8 [The first column of txt is a number, such as: 15484] {code...} java ------------------&gt ; txt, the memory is stored as [,1,5,4,8,4] In this case, I cannot use Integer.parseInt() to convert it into int type. I hope experts can help solve it...

PHP中文网 2017-05-27 17:40:37

Why is my PHP link sql garbled?

The web page is also utf8 and the database is utf8. PHP is also set to utf8.

没有名字 2020-05-19 11:41:40