practical-sql-2
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anthonydb
Code and Data for the Second Edition of "Practical SQL" by Anthony DeBarros, published by No Starch Press (2022).
If you're a Windows user, you may need to set permissions for the folder holding the code and data for the book. If you don't, you may see an error...
A search for UNION led me to discover that within a few pages, there are multiple Index entries missing: EXCEPT 111 INTERSECT 111 UNION 109 Maybe a new index is...
Using PostgreSQL 15.3... Nits which may confuse real beginners... Listing 4.2 could use a "DROP TABLE IF EXISTS number_data_types;", or a different name to avoid table already exists error. The...
On page 191 I read: >An R-squared indicated the percentage of variation... R-squared is not a percentage but is proportion. More information can be found by googling: https://www.google.com/search?q=rsqured
On p. 192 book states: >Statisticians also apply additional tests to data before accepting the results of regression analysis, including whether the variables follow the standard bell curve distribution... There...