docs(samples): add create view ddl

[pmakani]

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[codecov]

Codecov Report

Merging #558 into master will not change coverage.
The diff coverage is n/a.

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##             master     #558   +/-   ##
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  Coverage     81.49%   81.49%           
  Complexity     1226     1226           
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  Files            77       77           
  Lines          6220     6220           
  Branches        690      691    +1     
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  Hits           5069     5069           
  Misses          792      792           
  Partials        359      359           

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[stephaniewang526]

maybe we should name this string ddl? since this is a ddl create view sample?

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