problem description take over a new database, today found table data 50G, and then various indexes 75G, of which three large indexes are each around 23g, and most of the large indexes are bound to timestamps. what result do you expect? What is the e...
High performance MySQL (3rd edition, 1st edition, May 2013) on page 390, it is mentioned that the current generation of RDBMS technology has been optimized for mechanical hard drives for decades, and the same mature and in-depth research work has not re...
after reading this article (introducing schema in the database) https: www.biaodianfu.com da., it is mentioned that the schema in MySQL is the same as the library. Is this correct? Thank you ....
< html lang= "en " > < head > <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> &...
the server is a virtual machine on the LAN, with the same function. the computer uses developer tools to simulate mobile access, and the rich text editor is normal. If the phone is real, the submitted content is garbled, and it is the same when placed o...
in my project needs to achieve similar to the network disk to select multiple files (or click select all) to download multiple files, for a single file I currently practice is to directly use the FileResponse return way, but multiple files to do a loop d...
php7.2-I | grep xdebug Failed loading usr lib php 20151012 xdebug.so: usr lib php 20151012 xdebug.so: undefined symbol: php_log_err ...
how do I declare an array of structures in the data of vue? ... data () { return { structArray: [], 1 unit: {id: , name: }, structArray2: unit[10] 2 } } ... as above, what if you want structArr...