After my Master and Phd thesis, I have written all my Delphi books in Delphi (Link) . So, yes, I do know quite a lot about it as I've been using it for over 20 years.
Yeah, NULL could simply be written as NULL or left empty.
I helped myself by using this query, for example:
select STATE,County, '$' || Lat || '$' AS Lat,'$' || Lon || '$' AS Lon from coordinates LIMIT 10
LateX is so complex, you can only deliver a starting point. You export is still VERY helpful. This is what the table looks like in the end:
\begin{tabular}{ l l l l r r }
\textbf{Date} & \textbf{County} & \textbf{State} & \textbf{Fips} & \textbf{Cases} & \textbf{Deaths}\\ \toprule
2020-06-01 & Autauga & Alabama & $ 1001 $ & $ 234 $ & $ 5 $\\
2020-06-01 & Baldwin & Alabama & $ 1003 $ & $ 306 $ & $ 9 $\\
2020-06-01 & Barbour & Alabama & $ 1005 $ & $ 173 $ & $ 1 $\\
2020-06-01 & Bibb & Alabama & $ 1007 $ & $ 79 $ & $ 1 $\\
2020-06-01 & Blount & Alabama & $ 1009 $ & $ 65 $ & $ 1 $\\
2020-06-01 & Bullock & Alabama & $ 1011 $ & $ 210 $ & $ 6 $\\
2020-06-01 & Butler & Alabama & $ 1013 $ & $ 416 $ & $ 18 $\\
2020-06-01 & Calhoun & Alabama & $ 1015 $ & $ 172 $ & $ 3 $\\
2020-06-01 & Chambers & Alabama & $ 1017 $ & $ 370 $ & $ 25 $\\
2020-06-01 & Cherokee & Alabama & $ 1019 $ & $ 39 $ & $ 3 $\\
\end{tabular}
BTW: Hands-on 1 mentions HeidiSQL as a database tool ...