Recently, Microsoft Teams has been gaining more and more popularity among users. All in all, it is not surprising, because currently on the market it is difficult to find a…
Are you wondering how to start your adventure in the IT? Are you interested in data warehouses and data integration, but you do not know where to start? Talend Data…
Recently, Microsoft Teams has been gaining more and more popularity among users. All in all, it is not surprising, because currently on the market it is difficult to find a…
The answer is - you cannot, but you can use @SuperBuilder annotation instead of @Builder. @SuperBuilder was introduced as experimental feature in lombok v1.18.2.@SuperBuilder's toBuilder feature and limited support for…
Sometimes you got business requirements to create new view or dashboard and to do this you need to convert rows to columns. You can transpose them on two ways: using…
Many times you might want to have strong typing on your data in Spark. The best to get it is to DataSet insted of DataFrame. In this post I give…
In this post I will try to introduce you to the main differences between ReduceByKey and GroupByKey methods and why you should avoid the latter. But why? The answer is…
Sometimes you got business requirments to create new view or dashboard and to do this you need to convert rows to columns. You can transpose them on two ways: using…
When you create tables, you can set a lot of data type attribues like CHARACTER SET, FORMAT, UPPERCASE or (NOT) CASESPECIFIC. CASESPECIFIC attribute specifies case for character data comparisons and…
A constraint is a rule that you define and its task is to protect the table from clutter that may arise as a result of adding incorrect or incomplete data.…
