XuQianJin-Stars opened a new pull request #1168: [CALCITE-3005] Implement string functions: LEFT, RIGHT URL: https://github.com/apache/calcite/pull/1168 Some string functions including LEFT, RIGHT are not implemented now. It would be great if these functions can be implemented. LEFT(str,len) Returns the leftmost len characters from the string str, or NULL if any argument is NULL. RIGHT(str,len) Returns the rightmost len characters from the string str, or NULL if any argument is NULL.
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