Earning this certificate helps Java developers increase the security of their software and reduce vulnerabilities in the programs they develop.

SQL, Python, and Java remain the most sought-after programming skills by employers, according to new research from System Design School.

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

I came across an error，cause an exception when I use "java/sql/Statement" in jdk 11，but jdk 8 doesn t have this problem. I was very confused for this. //this my exception log. Exception in thread ...

目前对于prepare statement + cursor fetch的场景，oceanbase在3.1.4以及之前的版本会报错：not support，可以通过关闭prepare statement或者关闭cursor fetch来规避；具体observer的代码如下： ...

Do you want to find out how to avoid duplicates in the results of a SQL SELECT query? This article will show you how.

In Power BI DirectQuery mode you can – for most data sources – use your own SQL query as the source for a table in your dataset. For example when connecting to the AdventureWorksDW 2017 sample ...

Tables, views, and queries may be blurred together. This facet is why a view may be described as simply a “named” query. As one composes SQL Select statements, the author may use another query in ...

Before it sued Google for copying from Java, Oracle got rich copying IBM’s SQL Oracle's history highlights a possible downside to its stance on API copyrights.