Warnings in "build_book.R"

[znmeb]

There were 31 warnings (use warnings() to see them)
> warnings()
Warning messages:
1: In for (i in seq_len(n)) { ... : closing unused connection 33 (999-references.Rmd)
2: In for (i in seq_len(n)) { ... :
  closing unused connection 32 (997-additional-resources.Rmd)
3: In for (i in seq_len(n)) { ... :
  closing unused connection 31 (985-dbplyr-sql-translations.Rmd)
4: In for (i in seq_len(n)) { ... :
  closing unused connection 30 (980-dbi-summary-table.Rmd)
5: In for (i in seq_len(n)) { ... :
  closing unused connection 29 (970-dplyr-sql-summary-table.Rmd)
6: In for (i in seq_len(n)) { ... :
  closing unused connection 28 (930-postgresql-authentication.Rmd)
7: In for (i in seq_len(n)) { ... :
  closing unused connection 27 (920-windows-tech-details.Rmd)
8: In for (i in seq_len(n)) { ... :
  closing unused connection 26 (915-local-setup-with-adventureworks.Rmd)
9: In for (i in seq_len(n)) { ... :
  closing unused connection 25 (910-setup-instructions.Rmd)
10: In for (i in seq_len(n)) { ... :
  closing unused connection 24 (905-background-basic-concepts.Rmd)
11: In for (i in seq_len(n)) { ... :
  closing unused connection 23 (900-appendices-section.Rmd)
12: In for (i in seq_len(n)) { ... :
  closing unused connection 22 (210-sql-query-steps.Rmd)
13: In for (i in seq_len(n)) { ... :
  closing unused connection 21 (190-drilling-into-db-environment.Rmd)
14: In for (i in seq_len(n)) { ... :
  closing unused connection 20 (180-r-query-postgres-metadata.Rmd)
15: In for (i in seq_len(n)) { ... :
  closing unused connection 19 (170-sql-quick-start-simple-retrieval.Rmd)
16: In for (i in seq_len(n)) { ... :
  closing unused connection 18 (160-anti-join-cost-comparisons.Rmd)
17: In for (i in seq_len(n)) { ... :
  closing unused connection 17 (155-sql-joins-exercises-with-answers.Rmd)
18: In for (i in seq_len(n)) { ... :
  closing unused connection 16 (153-sql-joins-exercises.Rmd)
19: In for (i in seq_len(n)) { ... :
  closing unused connection 15 (150-sql-joins-exercises.Rmd)
20: In for (i in seq_len(n)) { ... :
  closing unused connection 14 (140-sql-dplyr-joins.Rmd)
21: In for (i in seq_len(n)) { ... :
  closing unused connection 13 (130-sql-dplyr-joins-data.Rmd)
22: In for (i in seq_len(n)) { ... :
  closing unused connection 12 (100-dbi-and-sql.Rmd)
23: In for (i in seq_len(n)) { ... :
  closing unused connection 11 (095-lazy-evalutation-and-timing.Rmd)
24: In for (i in seq_len(n)) { ... :
  closing unused connection 10 (090-lazy-evalutation-intro.Rmd)
25: In for (i in seq_len(n)) { ... :
  closing unused connection 9 (083-exploring-a-single-table.Rmd)
26: In for (i in seq_len(n)) { ... :
  closing unused connection 8 (080-elementary-queries.Rmd)
27: In for (i in seq_len(n)) { ... :
  closing unused connection 7 (065-connect-to-adventureworks-with-dplyr.Rmd)
28: In for (i in seq_len(n)) { ... :
  closing unused connection 6 (060-secure-and-use-dbms-credentials-in-r.Rmd)
29: In for (i in seq_len(n)) { ... :
  closing unused connection 5 (050-docker-setup-postgres-with-adventureworks.Rmd)
30: In for (i in seq_len(n)) { ... :
  closing unused connection 4 (030-learning-goals-use-cases.Rmd)
31: In for (i in seq_len(n)) { ... :
  closing unused connection 3 (020-using-this-book.Rmd)

My guess is we need to add some connection close calls at the ends of chapters.