search for: askay

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2024 Dec 11
2
SQL and R
Dear Askay, I believe my grey hair allows me to help answer your question. SQL, and its progenitor SEQUEL, were developed specifically to manipulate relational databases. It was developed in the early 1970s (equivalent to the historical bronze age) when the concept of a relational database (see https://en.wi...
2024 Dec 11
1
SQL and R
...base was actually every sale made in Walmart in the last 10 years, the database is huge. It would be better to extract the beer sales and males and females only which is hopefully smaller to analyse... On Wed, 11 Dec 2024, 21:39 Sorkin, John, <jsorkin at som.umaryland.edu> wrote: > Dear Askay, > > I believe my grey hair allows me to help answer your question. SQL, and > its progenitor SEQUEL, were developed specifically to manipulate relational > databases. It was developed in the early 1970s (equivalent to the > historical bronze age) when the concept of a relational dat...
2024 Dec 11
7
SQL and R
dear Members, I have recently started studying SQL and MySQL. My question is, what exactly is SQL used for? That is, whatever can be done by SQL, like subsetting and filtering of data sets, can also be done by R. What's, then, the advantage of SQL? It is OK if you tag this question as offtopic, but I could'nt find any info on the web. Can you please refer me to