大约有 9,000 项符合查询结果（耗时：0.0215秒） [XML]
无社交不商业，Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术
...辆车，几百万司机，永远是无法撼动的。
当用户习惯使用软件叫车后，又推出了专车服务，专车直接威胁了出租车公司的生存，这下出租车公司才反应过来，想要打击专车服务。但是，这种趋势完全挡不住。
一个月前，我...
Using Kafka as a (CQRS) Eventstore. Good idea?
...l back-ends or stand-alone products, it is well-documented how to create a SQL-based event store. And there are libraries available on top of a various kinds databases. There is also EventStore, which is built for this purpose.
In distributed scenarios, I've seen a couple of different implementatio...
PostgreSQL query to list all table names?
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Documentation says only the current one: postgresql.org/docs/9.5/static/infoschema-tables.html "table_catalog sql_identifier Name of the database that contains the table (always the current database)"
– sudo
Sep 10 '16 at 5:53
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MySQL Orderby a number, Nulls last
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MySQL has an undocumented syntax to sort nulls last. Place a minus sign (-) before the column name and switch the ASC to DESC:
SELECT * FROM tablename WHERE visible=1 ORDER BY -position DESC, id DESC
It is essentially the i...
How to get database structure in MySQL via query
Is it possible to somehow get structure of MySQL database, or just some table with simple query?
10 Answers
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Difference between two dates in MySQL
... the time value can range from "-838:59:59" to "838:59:59". w3schools.com/SQl/func_mysql_timediff.asp
– cREcker
Aug 3 '17 at 12:21
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How to convert a List into a comma separated string without iterating List explicitly [dupli
...place(", ", ",");
// CSV format surrounded by single quote
// Useful for SQL IN QUERY
String csvWithQuote = ids.toString().replace("[", "'").replace("]", "'")
.replace(", ", "','");
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90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...流量，我觉得很不公平。
后来我反思总结了一下，这种使用场景，不应该站在技术人员的角度来看，而是应该站在产品经理的角度来看。这类产品对用户来讲只是娱乐的需求，用户其实不太关心准不准确，只是哈哈一笑。我用...
How can I stop a running MySQL query?
I connect to mysql from my Linux shell. Every now and then I run a SELECT query that is too big. It prints and prints and I already know this is not what I meant. I would like to stop the query.
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How to update column with null value
I am using mysql and need to update a column with a null value. I have tried this many different ways and the best I have gotten is an empty string.
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