Yes it's true SQL stays crunchier in milk.
Because SQL language hasn't changed much since I started to code in 1995/6.
Sure, they've added a bunch of slick new features.
To make our lives easier (more complex).
Yet if you know the basics of SQL: Select, Insert, Update & Delete, you can program in almost every relational database.
And that's quite powerful.
If I had to direct someone in the IT field just starting out, I would point them in the direction of learning SQL.
They can always build on top of that with .net, Java, PHP, etc.
Or perhaps learn the new Big Data concepts.
Truth be told, you can spend an entire career in SQL Development and be successful.
And there you have it!
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