大约有 13,000 项符合查询结果(耗时:0.0147秒) [XML]

https://stackoverflow.com/ques... 

How to search a specific value in all tables (PostgreSQL)?

... If you're using IntelliJ you can just right-click your db and select "Dump with 'pg_dump'" or "Dump data to file(s)" – Laurens Nov 29 '17 at 12:26 3 ...
https://stackoverflow.com/ques... 

Unique random string generation

...ncat( Enumerable .Repeat(0, int.MaxValue) .Select(e => RandomByte()) .Where(randomByte => randomByte < outOfRange) .Take(length) .Select(randomByte => alphabet[randomByte % alphabet.Length]) ); } byte RandomByte() {...
https://www.tsingfun.com/it/opensource/451.html 

Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...

...er=extmail password=extmail default_pass_scheme = CRYPT password_query = SELECT username AS user,password AS password FROM mailbox WHERE username = '%u' user_query = SELECT maildir, uidnumber AS uid, gidnumber AS gid FROM mailbox WHERE username = '%u' 启动dovecot service dovecot start ...
https://stackoverflow.com/ques... 

How can I find an element by CSS class with XPath?

... This selector should work but will be more efficient if you replace it with your suited markup: //*[contains(@class, 'Test')] Or, since we know the sought element is a div: //div[contains(@class, 'Test')] But since this will...
https://stackoverflow.com/ques... 

How to store arrays in MySQL?

... retrieve a person and all of their fruit you can do something like this: SELECT p.*, f.* FROM person p INNER JOIN person_fruit pf ON pf.person_id = p.id INNER JOIN fruits f ON f.fruit_name = pf.fruit_name share |...
https://stackoverflow.com/ques... 

How to insert a character in a string at a certain position?

... There is no loop, it's a simple concatenation case and compiler should optimize it using a string builder, for readability I prefer to use the + operator, there is no need in this case to use StringBuilder explicitly. Using "StringBuilder" solution because ...
https://stackoverflow.com/ques... 

Truncate all tables in a MySQL database in one command?

... truncate multiple database tables on Mysql instance SELECT Concat('TRUNCATE TABLE ',table_schema,'.',TABLE_NAME, ';') FROM INFORMATION_SCHEMA.TABLES where table_schema in ('db1_name','db2_name'); Use Query Result to truncate tables Note: may be you will get this ...
https://stackoverflow.com/ques... 

LEFT JOIN only first row

...rtist_id) will be the earliest. So try something like this (untested...) SELECT * FROM feeds f LEFT JOIN artists a ON a.artist_id = ( SELECT MIN(fa.artist_id) a_id FROM feeds_artists fa WHERE fa.feed_id = f.feed_id ) a ...
https://stackoverflow.com/ques... 

GROUP_CONCAT comma separator - MySQL

... Query to achieve your requirment SELECT id,GROUP_CONCAT(text SEPARATOR ' ') AS text FROM table_name group by id; share | improve this answer | ...
https://stackoverflow.com/ques... 

push multiple elements to array

... This answer and the selected answer produce different, and perhaps unexpected, results. a.push(1) vs. a.push([1]) – oevna Dec 24 '16 at 1:12 ...