Added a sql (cte and union) to the concatenation of movie dataframes example#1

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DerikVo wants to merge 4 commits intofreestackinitiative:mainfrom DerikVo:main

+1,744-1

Commits on Nov 1, 2023

Added a sql equivalent (cte and union) to the concatenation of movie dataframe
DerikVo
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Commits on Nov 2, 2023

added code to allow older notebooks on colab to work
DerikVo
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Commits on Apr 27, 2024