6996bd2e81
This PR is based on #7533 , thanks to zhichao-li Closes #7533 Author: zhichao.li <zhichao.li@intel.com> Author: Davies Liu <davies@databricks.com> Closes #7843 from davies/str_index and squashes the following commits: 391347b [Davies Liu] add python api 3ce7802 [Davies Liu] fix substringIndex f2d29a1 [Davies Liu] Merge branch 'master' of github.com:apache/spark into str_index 515519b [zhichao.li] add foldable and remove null checking 9546991 [zhichao.li] scala style 67c253a [zhichao.li] hide some apis and clean code b19b013 [zhichao.li] add codegen and clean code ac863e9 [zhichao.li] reduce the calling of numChars 12e108f [zhichao.li] refine unittest d92951b [zhichao.li] add lastIndexOf 52d7b03 [zhichao.li] add substring_index function |
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