[GitHub] [calcite] liuyongvs commented on a diff in pull request #3237: [CALCITE-5728] Add ARRAY_TO_STRING function (enabled in BigQuery library)

["liuyongvs (via GitHub)" <gi...@apache.org>]

liuyongvs commented on code in PR #3237:
URL: https://github.com/apache/calcite/pull/3237#discussion_r1223626462


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site/_docs/reference.md:
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@@ -2663,6 +2663,7 @@ BigQuery's type system uses confusingly different names for types and functions:
 | s | ARRAY_REPEAT(element, count)                   | Returns the array containing element count times.
 | b | ARRAY_REVERSE(array)                           | Reverses elements of *array*
 | s | ARRAY_SIZE(array)                              | Synonym for `CARDINALITY`
+| b | ARRAY_TO_STRING(array, delimiter [, nullText ])| Returns a concatenation of the elements in *array* as a STRING and take *delimiter* as the delimiter. If the *nullText* parameter is used, the function replaces any `NULL` values in the array with the value of *nullText*. If the *nullText* parameter is not used, the function omits the `NULL` value and its preceding delimiter.

Review Comment:
   remove end with '.'



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