Zach Wilson | Founder of DataExpert.io

SQL has five levels to it. Level zero is select star from table. This is the equivalent of opening an Excel file. Can you get your hands into the data? Level one is do you know the rest of the keywords? Let's select from where group by having order by limit. And can you also understand the order in which these execute, which is from where group by having

SQL has five levels to it. Level 0 is select star from table. This is the equivalent of opening an Excel file. Can you get your hands into the data? Level 1 is do you know the rest of the keywords? Let's select from where, group by having, order by limit. And can you also understand the order in which these execute, which is from where,

So if you're learning data engineering from scratch in 2025, here's what I would do. First, I would learn SQL. SQL is the English of data engineering. Without it, you can't do anything else. There's a tool called data lemur that I would recommend you check out. It's a very powerful way to practice and learn SQL. You just need to learn the basic command select from where having group by order by

Hi, what's your name and what do you do for a living? I'm Zach. I'm a data engineer. I'm YZ. I'm a data scientist. And how long have you been doing that? I've been doing data engineering about nine years. Seven years. What does the average salary for your role looks like? For data engineering, it's about $127,000. I don't really know. I feel like $200,000 when people talk about it. What are the coding skills you need to know for this role? You're going to need to know

SQL has five levels to it. Level zero is select star from table. This is the equivalent of opening an Excel file. Can you get your hands into the data? Level one is do you know the rest of the keywords? Let's select from where group by having order by limit. And can you also understand the order in which these execute, which is from where group by having

SQL has five levels to it. Level 0 is select star from table. This is the equivalent of opening an Excel file. Can you get your hands into the data? Level 1 is do you know the rest of the keywords? Let's select from where, group by having, order by limit. And can you also understand the order in which these execute, which is from where,

So if you're learning data engineering from scratch in 2025, here's what I would do. First, I would learn SQL. SQL is the English of data engineering. Without it, you can't do anything else. There's a tool called data lemur that I would recommend you check out. It's a very powerful way to practice and learn SQL. You just need to learn the basic command select from where having group by order by

Hi, what's your name and what do you do for a living? I'm Zach. I'm a data engineer. I'm YZ. I'm a data scientist. And how long have you been doing that? I've been doing data engineering about nine years. Seven years. What does the average salary for your role looks like? For data engineering, it's about $127,000. I don't really know. I feel like $200,000 when people talk about it. What are the coding skills you need to know for this role? You're going to need to know