Single and double Quotes at SQLQuery connected to Presto

Could you please turn this into a self-contained reprex (short for minimal reproducible example)? It will help us help you if we can be sure we're all working with/looking at the same stuff.

If you can't create a reprex because of the database connection or something to that effect, it would be great if you could add formatting to your post just to make it more legible. To do so, you just add triple backticks around the code chunk (and add an R next to the opening backticks for syntax highlighting):

```r
library(foo)
```

If you've never heard of a reprex before, you might want to start by reading the tidyverse.org help page. The reprex dos and don'ts are also useful.

For pointers specific to the community site, check out the reprex FAQ, linked to below.

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