* Test suit load environment variable from env files
* Added expr() and exprs() for QuerySelect trait and Minor typo fix
* fmt
* Added doc testing for the new functions
* Remove excess comment for doc test
Co-authored-by: Chris Tsang <chris.2y3@outlook.com>
* Remove excess comment for doc test
Co-authored-by: Chris Tsang <chris.2y3@outlook.com>
* updated doc tests to make example more realistic
* changed doc test again for more realistic query and added expr_as()
* aligned expr_as() alias input with column_as() input
* update doc test for expr_as() according to previous changes
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Co-authored-by: Billy Chan <ccw.billy.123@gmail.com>
Co-authored-by: Chris Tsang <chris.2y3@outlook.com>
