Cache the result of SQL chunk properly #1544
Merged
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(The original author of this idea is @yihui: #1542 (review))
fixes rstudio/rmarkdown#914
When the engine is not R and the result of R object exists, the object should be passed to
block_cache
; SQL chunk and Stan chunk are the cases. Currently, Stan chunk does the right thing. This PR also make the result of SQL chunk to be cached.