Nothing
a <- "hello" b <- "world"
```{prql, engine.opts=list(use_glue=TRUE, signature_comment=FALSE)} from {{a}} select {{b}}
```r #| echo: false #| file: set-db.R
#| connection: con #| engine-opts: #| target: sql.sqlite #| signature_comment: false #| use_glue: true from mtcars select {{a}}
dbDisconnect(con)
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