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5 lines
675 B
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5 lines
675 B
Text
// This is generated by ESQL's AbstractFunctionTestCase. Do no edit it. See ../README.md for how to regenerate it.
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*Description*
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Converts a multivalue expression into a single valued column containing the last value. This is most useful when reading from a function that emits multivalued columns in a known order like <<esql-split>>. The order that <<esql-multivalued-fields, multivalued fields>> are read from underlying storage is not guaranteed. It is *frequently* ascending, but don't rely on that. If you need the maximum value use <<esql-mv_max>> instead of `MV_LAST`. `MV_MAX` has optimizations for sorted values so there isn't a performance benefit to `MV_LAST`.
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